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Peer-reviewed articles

2025

Efron,N., Morgan,P., Woods,C. A., Jones,D. A., Jones,L., Santodomingo-Rubido,J., Nichols,J. International trends in prescribing contact lenses for myopia control (2011–2024): An update Contact Lens Anterior Eye 2025;Online ahead of print [ Show Abstract ]

Purpose: The progression of myopia can be slowed using soft myopia control (SMC) and orthokeratology myopia control (OKMC) contact lenses. The purpose of this work is to update an earlier survey (covering years 2011–2018) by describing international trends in SMC and OKMC fitting between 2011 and 2024.

Method: An annual contact lens prescribing survey was sent to eye care practitioners in up to 71 countries between 2011 and 2024. Data are reported here for 8,578 lens fits undertaken across 20 countries to 6–12-year-old children, comprising 688 SMC fits, 918 OKMC fits, and 6,972 non-myopia control (NMC) fits. To assess current trends, the proportion of fits between 2020 and 2024 for 12 countries returning ≥30 myopia control fits was analysed (n = 2,277 fits).

Results: There was a small increase in SMC fitting from 0.0 % in 2011 to 3.9 % in 2016, a significant increase to 29.5 % in 2021, and a slower increase to 30.4 % in 2024 (p < 0.0001). The proportion of OKMC fits, in relation to all rigid lens fits, increased from 40.8 % in 2011 to 86.9 % in 2024 (p < 0.0001). Of all soft lens fits, SMC fits were 7.2 % and 8.7 % to males and females, respectively (p = 0.0008). There was a decrease in the percentage of SMC fits with increasing age (p < 0.0001). No such sex/age associations were evident with OKMC fits. The proportion of all contact lens fits over the past 5 years (2020–2024) were as follows: SMC fits – 24 % (n = 525), OKMC fits – 17 % (n = 320), and NMC lens fits – 59 % (n = 1,332).

Conclusion: There has been a substantial increase in SMC and OKMC lens fitting over the past 14 years, reflecting a heightened awareness among eye care practitioners and parents of the importance of slowing the progression of myopia in children.

Flitcroft,I., Bullimore,M.A., Gifford,K., Jonas,J. B., Jones,D., Jones,L., Kang,P., Resnikocc,S., Walline,J., Wildsoet,C. Myopia Correction, Myopia Control and Myopia Management: Definitions and Recommended Usage Investigative Ophthalmology & Visual Science 2025;Online ahead of print [ Show Abstract ]

The terms “myopia management” and “myopia control” are frequently used in both eye care and research settings, sometimes interchangeably, leading to potential confusion. Although both terms are important and useful in different situations, they represent fundamentally distinct concepts. When using such terms, it is important to consider the context and application—for example, whether they are being discussed with parents or included in written materials such as medical publications, marketing content, or regulatory documents. Their use may also vary by country. The aim of this article is to provide clear definitions of these terms, based on their evolution in recent years,1–4 and informed by consultations with industry representatives and members of the myopia research community.

Zhang,H.Y., Xu,F.Y., Liu,K.K.K., Chan,Y.P., Chow,A., Jones,D., Lam,C.S.Y. Myopia Management in Hong Kong Journal of Clinical Medicine 2025;14(3):Article 698 [ Show Abstract ]

Objectives: We aimed to investigate how optometrists in Hong Kong are managing myopic and "pre-myopic" children.

Methods: Clinical files for children aged 6 to 10 years old who had eye examinations from 2017 to 2021 were retrospectively reviewed. Children were grouped by the initial spherical equivalent refractive error (SER) as myopes or pre-myopes. The demographic data, refractive error, and myopia management recommended by the optometrists were analyzed.

Results: A total of 1,318 children (859 myopes and 459 pre-myopes) from ten clinics in Hong Kong were included. Over 5 years, myopia management recommendations shifted significantly (p < 0.001). In 2017, only 18.4% of children were recommended to pursue myopia control (MC), increasing to 42.8% by 2021. The use of MC spectacle lenses increased from 7.3% in 2017 to 36.8% in 2021, becoming the most recommended option. Orthokeratology, MC contact lenses, and atropine remained stable at less than 5% over this period. Children recommended for MC approaches had significantly more myopia than those recommended single-vision lenses or monitoring (p < 0.05). Age of the first visit significantly correlated with SER change from the first visit to the next recommendation update for pre-myopes (r = 0.27, p = 0.013) but not for myopes.

Conclusions: From 2017 to 2021, myopia management patterns in Hong Kong shifted significantly, with more children being recommended for myopia control. MC spectacle lenses emerged as the most commonly recommended method. Younger pre-myopes at their first visit were more likely to have earlier management updates.

2024

Chow,A. H. Y., Mungalsingh,M., Thai,D., Selimos,Z., Yan,S. K., Xu,H., Jones,D. A. Suitability of multifunction devices Myah and Myopia Master for monitoring myopia progression in children and adults Ophthalmic and Physiological Optics 2024;44(5):1017-1030 [ Show Abstract ]

Purpose: To assess the feasibility of using multifunction instruments to measure axial length for monitoring myopia progression in children and adults.

Methods: Axial length was measured in 60 children (aged 6–18 years) and 60 adults (aged 19–50 years) with multifunction instruments (Myah and Myopia Master) and stand-alone biometers (Lenstar LS900 and IOLMaster 700). Repeatability (measurements by the same examiner) and reproducibility (measurements by different examiners) were computed as the within-subject standard deviation (Sw) and 95% limits of agreement (LoA). Inter-instrument agreement was computed as intraclass correlation coefficients. The threshold for detecting myopic progression was taken as 0.1 mm. Measures were repeated only in children following the administration of 1% tropicamide to determine the impact of cycloplegia on axial length.

Results: Overall, the IOLMaster 700 had the best repeatability in children (0.014 mm) and adults (0.009 mm). Repeatability Sw values for all devices ranged from 0.005 to 0.021 mm (children) and 0.003 to 0.016 mm (adults). In children, reproducibility fell within 0.1 mm 95% of the time for the Myah, Myopia Master and IOLMaster 700. Agreement among all devices was classified as excellent (ICC 0.999; 95% CI 0.998–0.999), but the 95% LoA among the Myah, Myopia Master and Lenstar LS900 was ≥0.1 mm. Cycloplegia had no statistically significant effect on axial length (all p > 0.13).
Conclusions: The Myah and Myopia Master multifunction instruments demonstrated good repeatability and reproducibility, and their accuracy was comparable to stand-alone biometers. Axial length measurements using different instruments can be considered interchangeable but should be compared with some caution. Accurate axial length measurements can be obtained without cycloplegia. The multifunction instruments Myah and Myopia Master are as well suited for monitoring myopia progression in children as the stand-alone biometers IOLMaster 700 and Lenstar LS900.

Efron,N., Morgan,P., Woods,C. A., Jones,D. A., Jones,L., Nichols,J. International trends in rigid contact lens prescribing (2000–2023): An update Contact Lens Anterior Eye 2024;47(5):102255 [ Show Abstract ]

Purpose: Rigid contact lenses have an important role in contact lens practice. The purpose of this work is to update earlier surveys by describing global trends in rigid lens fitting between 2000-2023.

Method: An annual contact lens prescribing survey was sent to eye care practitioners in up to 71 countries between 2000 and 2023. Data relating to 342,500 fits undertaken in 20 countries returning reliable longitudinal data were analysed in respect of rigid lens fitting, defined as the fitting of any design of a contact lens manufactured in a rigid material.

Results: Overall, rigid lens prescribing increased slightly over time, from 14.2 % of lens fits in 2000 to 15.2 % in 2023 (p < 0.0001). However, post-hoc analysis shows that the change over time is best described as a decline between 2000 and 2012, followed by a steady increase subsequently. There were significant differences in rigid lens prescribing between countries (p < 0.0001). The difference between the percentage of males fitted with rigid lenses, as a proportion of all contact lenses (12.7 %), and females (12.0 %) is significant (p < 0.0001), although not clinically meaningful. Rigid lens wearers are older at fitting than soft lens wearers (38.7 vs 31.3 years,
respectively) (p < 0.0001). Analysis of 5,994 rigid lens fits prescribed currently (2019–2023) were categorised as: corneal sphere – 30 %; scleral and corneo-scleral – 28 %; corneal myopia control/orthokeratology – 21 %; and corneal complex (including toric, multifocal and monovision) – 16 %.

Conclusion: There has been a slight increase in rigid lens fitting during the second decade of this century. This increase is apparently due to a ‘repurposing’ of rigid lenses, with the growth of scleral/corneo-scleral and myopia control/orthokeratology lens fits essentially replacing conventional spherical corneal lens fits.

Efron,N., Morgan,P., Woods,C. A., Jones,D. A., Jones,L., Nichols,J. International trends in prescribing toric soft contact lenses to correct astigmatism (2000–2023): An update Contact Lens Anterior Eye 2024;47(5):102276 [ Show Abstract ]

Purpose
There have been significant advancements in toric soft contact lens design and manufacturing technology, and increased product availability, over the past half a century. The purpose of this work is to update earlier surveys by describing international trends in toric soft lens fitting between 2000 and 2023, inclusive.

Method
An annual contact lens prescribing survey was sent to eye care practitioners in up to 71 countries between 2000 and 2023, inclusive. Data relating to 220,934 standard soft daily wear single vision lens fits undertaken in 20 countries returning reliable longitudinal data were analysed in respect of toric soft lens fitting.

Results
Overall, toric soft lens prescribing almost doubled over the time-course of this survey, from 24.4 % of standard soft daily wear single vision lens fits in 2000 to 46.2 % in 2023 (p < 0.0001). There were significant differences between countries in toric soft lens prescribing (p < 0.0001). Of all standard soft daily wear single vision contact lenses prescribed to males, 32.0 % were toric soft lenses, compared with 28.7 % for females (p < 0.0001). The mean age of toric soft lens wearers was 30.5 ± 12.5 years, compared to 27.9. ± 12.1 years for spherical soft lens wearers (p < 0.0001). Analysis of 13,582 recent toric soft lens fits (2019–2023, inclusive), in terms of material type and replacement frequency, revealed the following proportions: reusable silicone hydrogel – 51 %; daily disposable silicone hydrogel – 27 %; daily disposable hydrogel – 12 %; and reusable hydrogel – 10 %.

Conclusion
There has been a substantial increase in toric soft lens fitting throughout the 24 years of this survey, to a point whereby almost all clinically significant astigmatism is being corrected among those wearing standard soft daily wear single vision lenses.

Efron,N., Morgan,P., Woods,C. A., Jones,D. A., Jones,L., Nichols,J. International trends in prescribing silicone hydrogel contact lenses for daily wear (2000–2023): An update Contact Lens Anterior Eye 2024;47(6):102310 [ Show Abstract ]

Purpose
Introduced around the turn of the 21st century, silicone hydrogel contact lenses alleviated hypoxic anterior eye complications due to their high oxygen transmissibility. The purpose of this work is to update earlier surveys by describing international trends in silicone hydrogel daily wear contact lens fitting between 2000 and 2023.

Method
An annual contact lens prescribing survey was sent to eye care practitioners in up to 71 countries between 2000 and 2023. Data relating to 260,144 daily wear soft contact lens fits undertaken in 20 countries returning reliable longitudinal data were analysed in respect of silicone hydrogel daily wear contact lens fitting.

Results
There has been a dramatic increase in silicone hydrogel daily wear lens fits (p < 0.0001), increasing from 2.8 % of all daily wear soft lens fits in 2000 to 73.7 % in 2023. Of all daily wear soft contact lenses prescribed to males, 44.6 % were silicone hydrogel lenses, compared with 43.5 % for females (p = 0.0146). The mean age of those wearing silicone hydrogel daily wear lenses was 32.0 ± 14.5 years, compared to 30.4 ± 13.6 years for those wearing daily wear hydrogel lenses (p < 0.0001). Between 2019–2023, the average percentage of fits was – (a) material type: silicone hydrogel – 73 %; mid-water content hydrogels – 13 %; high water content hydrogels – 9 %; and low water content hydrogels – 5 %, and (b) lens design: spherical – 44 %, toric – 32 %, multifocal – 17 %, monovision – 4 %, and ‘other’ – 3 %.

Conclusion
The dramatic increase in silicone hydrogel contact lens prescribing for daily wear has been commensurate with the introduction of multiple lens brands and an ongoing expansion of lens designs, parameters and replacement frequency options. The balance between silicone hydrogel and hydrogel lens prescribing is perhaps starting to approach an equilibrium.

Laughton,D., Hill,J. S., McParland,M., Tasso,V., Woods,J., Zhu,X., Young,G., Craven,R., Hunt,C., Neitz,J., Neitz,M., Chalberg,T., Jones,D., Wolffsohn,J. Control of myopia using diffusion optics spectacle lenses: 4-year results of a multicentre randomised controlled, efficacy and safety study (CYPRESS) BMJ Open Ophthalmology 2024;9(1):e001790 [ Show Abstract ]

Aims To evaluate the myopia control efficacy of Diffusion Optics Technology (DOT) spectacle lenses in children over a 4-year treatment period.

Methods CYPRESS Part 1 (NCT03623074) was a 3-year multicentre, randomised, controlled, double-masked trial comparing two investigational spectacle lens DOT designs (Test 1, Test 2) and standard single vision Control lenses in 256 North American children aged 6–10 years. Children completing Part 1 (n=200) were invited to enrol in CYPRESS Part 2 (NCT04947735) for an additional 1-year period. In Part 2, Test 1 (n=35) and Control groups (n=42) continued with their original lens assignment and the Test 2 group (n=21) were crossed over to Test 1 (DOT 0.2) lenses. The co-primary endpoints were change from baseline in axial length (AL) and cycloplegic spherical equivalent refraction (cSER).

Results Test 1 spectacle lenses demonstrated superiority to the Control in both co-primary endpoints: with a difference between means (Test 1−Control) of −0.13 mm for AL (p=0.018) and 0.33 D for cSER (p=0.008) in Part 1 and −0.05 mm for AL (p=0.038) and 0.13 D for cSER (p=0.043) in Part 2. Comparing treatment effects in Part 1 and 2 suggests that COVID-19 public health restrictions negatively impacted treatment efficacy in study years 2 and 3.

Conclusion DOT 0.2 spectacle lenses are safe and effective at reducing myopia progression, with additional benefit evident in year 4 of wear. These results support the hypothesis that a mild reduction in retinal contrast can slow myopia progression in young children. The unprecedented disruption in participant schooling and lifestyle during the COVID-19 pandemic may have depressed treatment efficacy in Part 1.

Morgan,P., Efron,N., Woods,C. A., Jones,D. A., Jones,L., Nichols,J. International trends in prescribing multifocal and monovision soft contact lenses to correct presbyopia (2000–2023): An update Contact Lens Anterior Eye 2024;Online ahead of print [ Show Abstract ]

Purpose: Numerous multifocal soft contact lenses have been introduced into clinical practice over the past half century. The purpose of this work is to update earlier surveys by describing international trends in multifocal and monovision soft lens fitting for presbyopia between 2000–2023, inclusive.

Method: An annual contact lens prescribing survey was sent to eye care practitioners in up to 71 countries between 2000–2023. Data relating to 52,580 soft daily wear lens fits to presbyopes (those ≥45 years of age) undertaken in 20 countries returning reliable longitudinal data were analysed in respect of multifocal and monovision soft daily wear lens fits.

Results: Overall, multifocal and monovision soft daily wear lens prescribing to presbyopes has more than doubled over the course of this survey, from 26.4 % of standard soft daily wear lens fits in 2000 to 61.1 % in 2023 (p < 0.0001). There were significant differences between countries in presbyopia soft daily wear lens prescribing (p < 0.0001). Of all soft daily wear fits to males, 45.1 % were multifocal and monovision soft lenses, compared with 52.7 % for females (p < 0.0001). When considered as the proportion of lenses fitted by age, multifocal soft lens fitting peaked between 50–65 years, followed by a precipitous drop until 85–90 years of age, and then an increase beyond 90 years of age. Analysis of 13,014 recent soft lens fits to presbyopes (2019–2023) revealed the following fitting proportions: multifocal lenses – 51 %; monovision – 10 %; and non-presbyopia fitting – 39 %.

Conclusion: There has been a substantial increase in soft contact lens correction of presbyopia using multifocal and monovision corrections throughout the 24 years of this survey. A significant number of soft contact lens-wearing presbyopes are not receiving a presbyopia contact lens correction.

Morgan,P., Efron,N., Woods,C. A., Jones,D. A., Jones,L., Nichols,J. International trends in daily disposable contact lens prescribing (2000–2023): An update Contact Lens Anterior Eye 2024;47(6):102259 [ Show Abstract ]

Purpose
Daily disposable contact lenses offer numerous benefits in terms of ocular health and wearer convenience. The purpose of this work is to update earlier surveys by describing global trends in daily disposable lens fitting between 2000 and 2023.

Method
An annual contact lens prescribing survey was sent to eye care practitioners in up to 71 countries between 2000 and 2023, inclusive. Data relating to 265,106 daily wear soft lens fits undertaken in 20 countries returning reliable longitudinal data were analysed in respect of daily disposable lens fitting.

Results
Overall, daily disposable lens prescribing increased over time, from 17.1 % of daily wear soft lens fits in 2000 to 46.7 % in 2023 (p < 0.0001). There were significant differences between countries in daily disposable lens prescribing (p < 0.0001), and between the percentage of males fitted with daily disposable lenses, as a proportion of all daily wear soft lenses (37.2 %), compared to females (35.2 %) (p < 0.0001). Daily disposable lens wearers are slightly younger at fitting than reusable soft lens wearers (31.0 vs 31.2 years, respectively) (p < 0.0001), although this difference is not clinically meaningful. Analysis of 50,240 daily wear soft lenses fitted recently (2019–2023) were found to be prescribed for the following replacement frequencies: daily – 47 %; monthly – 42 %; 1–2 weekly – 9 %; and ≥3 monthly – 2 %.

Conclusion
There has been a substantial increase in daily disposable lens fitting throughout the first 24 years of this century. The gradual nature of this increase is commensurate with the staged introduction of daily disposable lens designs and expanded parameter ranges over the survey period.

Morgan,P., Efron,N., Woods,C. A., Jones,D. A., Jones,L., Nichols,J. International trends in prescribing extended wear soft contact lenses (2000–2023): An update Contact Lens Anterior Eye 2024;47(6):102285 [ Show Abstract ]

Purpose
Extended wear has long been considered as the ultimate contact lens modality in terms of user convenience. The purpose of this work is to update earlier surveys by describing international trends in extended wear soft lens fitting between 2000 and 2023, inclusive.

Method
An annual contact lens prescribing survey was sent to eye care practitioners in up to 71 countries between 2000 and 2023, inclusive. Data relating to 282,142 soft contact lens fits undertaken in 20 countries returning reliable longitudinal data were analysed in respect of extended wear soft lens fitting.

Results
Over the duration of the work there was a very small decrease in the prescribing of extended wear soft lenses (p < 0.0001). More detailed inspection shows that prescribing of these lenses steadily increased from 5.8 % of all soft lens fits in 2000 to 11.6 % in 2007, then steadily decreased to 5.2 % in 2023. Of all soft contact lenses prescribed to males, 9.2 % were fitted for extended wear, compared with 6.7 % for females (p < 0.0001). The mean age of extended wear soft lens wearers at fitting was 34.7 ± 14.7 years, compared to 31.1. ± 14.10 years for daily soft lens wearers (p < 0.0001). Analysis of 1,948 recent extended wear soft lens fits (2019–2023, inclusive), in terms of material type, revealed that, on average, 86 % and 14 % of extended wear soft lenses were fitted using silicone hydrogel and hydrogel materials, respectively.

Conclusion
A modest increase in extended wear soft lens prescribing from 2000 to 2007 corresponded with the introduction of high oxygen transmissibility silicone hydrogel lenses. However, prescribing of this lens type declined thereafter, probably due to ongoing concerns over their increased rate of microbial keratitis, resulting in a prescribing rate in 2023 (5.2%) that was little different to that observed in 2000 (5.8%).

2023

Bitton,E., Jones,D., Wittich,W. Financial Inequities in Optometric Education in Canada: A Comparison of Two Optometry Programs Optometry and Vision Science 2023;100(11):785-793 [ Show Abstract ]

Significance: The advancing age of the population will require increased access to eyecare services to manage eye diseases and vision correction. Optometric education requires a sound financial plan to manage student debt. This study evaluates the financial inequalities of optometric programs in Canada, and how this may impact the provision of eyecare professionals.

Purpose: The objective of this study was to compare the financial inequities in Optometric education in Canada from the 2020 graduating class.

Methods: A cross-sectional study assessed monetary variables related to the study of optometry in Canada, including academic and personal expenses, and overall debt and expenses related to the COVID-19 lockdown for the 2020 graduating class.

Results: 108 optometry students from the 2020 graduating classes of the University of Montreal and the University of Waterloo responded, with 68 (53 F:15 M, age 25.66, SD = 2.01) completing the study. Waterloo students spent more years in university (P < .001); had higher academic fees (P <.001); spent more on travelling to their family residence (P =.007) and received more provincial (P = .002) and federal (P <.001) loans than Montreal students. Overall debt prior to optometry was similar amongst students but differed (P <.001) at the end of their program, with Waterloo students having a higher debt burden.

Conclusions: There is a financial inequity in optometric education in Canada depending on the chosen program. Cumulative optometry student debt for the 2020 graduating class in Canada ranges from $CAN 0 to 189,000 with an average of $CAN 65,800 and a median of $CAN 50,000. The results of this study can assist financial, government agencies and future optometry students to better understand the financial burdens and establish a financial plan to study optometry in Canada, to respond to the growing eyecare needs of the public.

Spafford,M. M., Chow,A. H. Y., Labreche,T., Jones,D. A., Christian,L. W. T., Furtado,N. M., MacIver,S., Irving,E. L. Trust and Access: Eye Information-seeking Practices and Preferences among Canadians Optometry and Vision Science 2023;100(7):467-474 [ Show Abstract ]

SIGNIFICANCE
This study highlights the value that the public places on obtaining trusted and accessible health-related information and their preference for obtaining it from their health care practitioners. Previous research has not been specific to Canadians or vision. Findings can be used to increase eye health literacy and eye care utilization.

PURPOSE
Canadians underuse eye care and underestimate the occurrence of asymptomatic eye disease. This study explored eye information-seeking practices and preferences among a group of Canadians.

METHODS
Using snowball sampling, a 28-item online survey collected respondent perceptions about their eye and health information-seeking practices and preferences. Questions examined electronic device access, information source use, and demographics. Two open-ended questions examined information-seeking practices and preferences. Respondents were at least 18 years old and living in Canada. Individuals working in eye care were excluded. Response frequencies and z scores were computed. Written comments were assessed using content analysis.

RESULTS
Respondents searched for less eye than health information (z scores ≥ 2.25, P < .05). For eye and health information, primary care providers were the used and preferred source, and reliance on Internet searches was greater than desired. Trust and access drove information-seeking practices. Respondent comments suggested that a hierarchy of trust operates across My Health Team, My Network, and My External Sources, with a persistent threat posed by Discredited Sources. Access to information sources seemed mediated by enablers (Convenience and Accessible Features) and barriers (Unreachable Health Team and Absent Systems). Eye information was seen as more specialized and harder to find. There was a high regard for health care practitioners who provide their patients with curated trusted information.

CONCLUSIONS
These Canadians value trusted and accessible health-related information. They prefer eye and health information from their health care practitioners and value when their health team provides online curated information, particularly regarding eyes.

Spafford,M. M., Jones,D. A., Christian,L. W., Labreche,T., Furtado,N. M., MacIver,S., Irving,E. L. What the Canadian public (mis)understands about eyes and eye care Clinical and Experimental Optometry 2023;106(1):75-84 [ Show Abstract ]

Clinical relevance
Inadequate public knowledge about eyes and eye care poses avoidable risks to vision-related quality of life.

Background
This study of eye care knowledge among Canadians extends earlier findings from focus groups.

Methods
Perceptions about eyes and eye care were sought using a 21-item online survey and snowball sampling. Inclusion criteria were living in Canada and being at least 18-years old; eye care professionals and staff were excluded. Response frequencies were converted to percentages, with eye condition items analysed according to ‘expected’ or ‘unexpected’ eye impacts. Proportions selecting these impacts or ‘unsure’ were determined.

Results
There were 424 respondents: 83.0% aged 20-65 years and 69.6% female. Mismatches existed between perceived recommendations and behaviours for booking eye exams: within two years (86.7% vs. 68.4%) and symptom-driven (3.3% vs. 13.0%). First eye exams after age one year were deemed appropriate by 43.6%. Few respondents associated glaucoma with no symptoms (6.0%) or amblyopia with blurred vision (13.5%). A notable proportion incorrectly related tunnel vision with age-related macular degeneration (AMD, 36.8%) and cataract (21.9%). Identifying all ‘expected’ responses was unlikely for glaucoma (1.9%), amblyopia (6.7%), and cataract (12.0%). Most respondents identified no ‘expected’ effects for glaucoma (63.8%) and AMD (46.2%) and some ‘expected’ effects for cataract (59.5%) and amblyopia (72.6%). Selecting ‘unsure’ was 9-10 times more common among respondents choosing no ‘expected’ impacts than those choosing some. Awareness of thyroid-associated eye disease was lowest (32.4%) of seven conditions. Respondents were most likely to consult optometrists for routine eye exams, eye disease, diabetes eye checks and blurred vision but family physicians for red eyes and sore eyes. Respondents typically paid for their eye exams and eyewear but wanted government to pay.

Conclusion
Vision-threatening knowledge gaps and misinformation about eyes and eye care among Canadian respondents highlight the need for accessible, targeted public education.

2022

Chamberlain,P., Bradley,A., Arumugam,B., Hammond,D., McNally,J., Logan N., Jones,D., Ngo,C., Peixoto-de-Matos S., Hunt,C., Young G. Long-term Effect of Dual-focus Contact Lenses on Myopia Progression in Children: A 6-year Multicenter Clinical Trial Optom Vis Sci 2022;99(3):204-212 [ Show Abstract ]

Significance: Treatment of myopic children with a dual-focus soft contact lens (DFCL; MiSight 1 day) produced sustained slowing of myopia progression over a six-year period. Significant slowing was also observed in children switched from control to treatment lenses (3 years in each lens).

Purpose: Evaluate the effectiveness of DFCLs in sustaining slowed progression of juvenile-onset myopia over a 6-year treatment period. Assess myopia progression in children who were switched to DFCL at the end of year 3.

Methods: Part 1 was a 3-year clinical trial comparing DFCLs with control CLs (Proclear 1 day) at four investigational sites. In Part 2, subjects completing Part 1 were invited to continue for 3 additional years during which all children were treated with MiSight 1 day DFCLs (52 and 56 from the initially treated (T6) and control (T3) groups, respectively). 85 subjects (45 (T3) and 40 (T6)) completed Part 2. Cyclopleged spherical equivalent refractive errors (SERE) and axial lengths (AL) were monitored and linear mixed model was used to compare their adjusted change annually.

Results: Average age at Part 2 baseline was 13.2 ± 1.3 and 13.0 ± 1.5 for the T6 & T3 groups respectively. Slowed myopia progression in the T6 group observed during Part 1 was sustained throughout Part 2 (Mean ± SEM: Change from baseline SERE(D) = -0.52 ± 0.076 vs -0.51 ± 0.076; change in AL(mm) = 0.28 ± 0.033 vs 0.23 ± 0.033, both P > .05). Comparing progression rates in Part 2 for the T6 and T3 groups respectively indicate that prior treatment does not influence efficacy (SERE -0.51 ± 0.076 vs -0.34 ± 0.077; AL 0.23 ± 0.03 vs 0.18 ± 0.03, both P > .05). Within-eye comparisons of AL growth revealed a 71% slowing for the T3 group (3-years older than Part 1), and further revealed a small subset of eyes (10%) that did not respond to treatment.

Conclusions: DFCLs continue to slow the progression of myopia in children over a six-year period revealing an accumulation of treatment effect. Eye growth of the initial control cohort with DFCL was slowed by 71% over the subsequent 3-year treatment period.

Thite,N., Desiato,A., Shinde,L., Wolffsohn,J. S., Naroo,S. A., Santodomingo Rubido,J., Cho,P., Jones,D., Villa-Collar,C., Carrillo,G., Chan,O., Wang,H., Iomdina,E., Tarutta,E., Proskurina,O., Fan,C. S., Zeri,F., Bakkar,M. M., Barodawala,F., Dabral,N., Lafosse,E., Lee,C., Nichols,J. J., Chan, J., Park,K., Nair,V., Van Der Worp,E., Vankudre,G., Maseedupally,V., Bhattarai,Y., Nagzarkar,D., Brauer,P., Gil-Cazorla,R. Differences in Practitioner Experience, Practice Type, and Profession in Attitudes Toward Growing Contact Lens Practice Eye & Contact Lens 2022;48(9):369-376 [ Show Abstract ]

Objective: To investigate eye care practitioners' attitudes and perceptions toward potential interventions that can enhance contact lens (CL) practice across the world, and how this is influenced by their practice setting.

Methods: A self-administered, anonymized survey was constructed in English and then forward and backward translated into six more languages. The survey was distributed online via social media platforms and mailing lists involving reputed international professional bodies.
Results: In total, 2,222 responses from 27 countries with sufficient responses were analyzed (53% females, median age- 37 years). Most of the respondents were optometrists (81.9%) and 47.6% were from stand-alone/independent practices. Median working experience in CL prescribing was 11.0 years (IQR: 18.0, 4-22 years). Over two-third of them declared themselves to be very hopeful (22.9%) or hopeful (45.1%) about the future of their CL practice. Among the potential interventions proposed, continuous update of knowledge and skills and competently managing CL-related complications were rated the most important (median score: 9/10 for each). Practitioners working in national/regional retail chains expressed higher proactivity in recommending CLs (9/10) than those in local chains, hospitals, and universities (for all 8/10, P<0.05). National differences were also identified in eye care practitioner attitudes and perceptions (P<0.05).

Conclusions: The study provided important information to delineate a variety of elements characterizing CL practice across the world. These insights can serve as a basis to design strategies at national and international levels

2021

Thite,N., Desiato,A., Shinde,L., Wolffsohn,J. S., Naroo,S. A., Santodomingo-Rubido,J., Cho,P., Jones,D., Villar-Collar,C., Carillo,G., Chan,O., Wang,H., Iomdina,E., Tattura,E., Proskurina,O., Shing Fan,C., Zeri,F., Bakkar,M. M., Barodawala,F., Dabral,N., Lafosse,E., Lee,C., Nichols,J. J., Chan,J., Park,K., Nair,V., van der Worp,E., Vankudre,G., Maseedupalli,V., Bhattarai,Y., Nagzarkar,D., Brauer,P., Gil-Cazorla,R. Opportunities and threats to contact lens practice: A global survey perspective Contact Lens Anterior Eye 2021;44(6):101496 [ Show Abstract ]

Aim
To understand the views of contact lens (CL) practitioners across the globe regarding what they perceive as opportunities and threats in CL practice.

Methods
A self-administered anonymised questionnaire, constructed in English and translated in six more languages, was distributed through reputed international professional bodies and academic institutions worldwide. The questionnaire included items on demographic characteristics, type of practice, and questions designed to explore practitioners’ perspective on the future of their CL practice over the next five years.

Results
A total of 2408 valid responses were analysed. Multifocal CLs for presbyopia, CLs for myopia control, use of daily disposable (DD) CLs for occasional wear, and biocompatible materials to improve comfort were identified as promising areas of opportunities by practitioners (all 8/10). Respondents from North America, and Europe valued DDCLs for occasional wear moderately more favourable (Median: 9/10 for all) as compared to colleagues in Asia (Median: 8/10, p < 0.001), South America (Median: 8/10, p < 0.01), and Africa (Median: 8/10p < 0.01). Multifocal CLs for presbyopia was perceived as a better opportunity by practitioners in North America and Europe (Median: 9/10 for both), as well as in Australasia (Median: 8/10), in comparison to Asia, Africa, and Middle East (for all Median: 6/10, p < 0.001). Practitioners expressed concerns about the availability of CLs and CL prescriptions online without direct professional involvement (both 9/10).

Conclusions
Overall, the most appealing opportunities for CL practice growth were identified in occasional use of DD CLs, biocompatible materials to reduce CL discomfort, multifocal CLs for presbyopia correction and management of myopia control with CLs. Lack of regulation in CL sales, especially online, seemed to be a constant threat. The insights from this study can be used to design targeted strategies to enhance CL practice across the globe and in specific geographical areas.

Woods,J., Jones,D., Jones,L., Jones,S., Hunt,C., Chamberlain,P., McNally,J Ocular health of children wearing daily disposable contact lenses over a 6-year period Contact Lens Anterior Eye 2021;44(4):101391 [ Show Abstract ]

Purpose
To report on the ocular health and safety of children fit with soft hydrogel daily-disposable contact lenses, and followed for 6-years in a double-masked clinical trial investigating the performance of a dual-focus contact lens designed to control myopia progression.

Methods
Children aged 8−12 years, naïve to contact lens wear, were enrolled across four international sites. During years 1–3, children were randomised to either MiSight® 1 day or Proclear® 1 day (both omafilcon A, CooperVision, Inc.). The lenses were identical in material and geometry except for the front optical zone design. At the end of year-3, all those wearing Proclear 1 day were switched to MiSight 1 day, therefore all wore MiSight 1 day in years 4−6. Subjects agreed to wear the lenses at least 10-hours/day, 6-days/week. After dispensing, study visits were at 1-week, 1-month, 6-months and every 6-months until 6-years. At each visit, ocular measurements and subjective responses were recorded. Biomicroscopy used 0–4 grading scales; grade 0 represented no findings.

Results
144 children were enrolled: 69F:75M; mean age 10.1 years; mean cycloplegic spherical-equivalent refraction -2.11D; ethnicities included 34 East-Asian, 12 West-Asian, and 79 Caucasian. 92 completed the 6-years. Only three subjects discontinued due to an ocular adverse event (AE). No contact lens related AEs were classified as serious. The incidence rate of infiltrative AEs was 0.61% (6.1/1000 wearing-years; 95%CI: 0.24%–1.57%). The most common biomicroscopy findings were limbal, bulbar and tarsal hyperaemia and tarsal roughness. 99% of all biomicroscopy findings were grade-1 or lower. After 6-years of lens wear, ocular health by biomicroscopy was similar to pre-lens wear.

Conclusions
Across the 6-years, there were no contact lens related serious AEs and biomicroscopy showed no significant changes. Results suggest that children this age can successfully wear daily-disposable hydrogel contact lenses with minimal impact on ocular physiology.

2020

Wolffsohn,J. S., Calossi,A., Cho,P., Gifford,K., Jones,L., Jones,D., Guthrie,S., Li,M., Lipener,C., Logan,N. S., Malet,F., Peixoto-de-Matos,S. C., González-Méijome,J. M., Nichols,J. J., Orr,J. B., Santodomingo-Rubido,J., Schaefer,T., Thite,N., van der Worp,E., Tarutta,E., Iomdina,E., Ali,B. M., Villa-Collar,C., Abesamis-Dichoso,C., Chen,C., Pult,H., Blaser,P., Parra Sandra Johanna,G., Iqbal,F., Ramos,R., Carrillo Orihuela,G., Boychev,N. Global trends in myopia management attitudes and strategies in clinical practice – 2019 Update Cont Lens Anterior Eye 2020;43(1):9-17 [ Show Abstract ]

Purpose: A survey in 2015 identified a high level of eye care practitioner concern about myopia with a reported moderately high level of activity, but the vast majority still prescribed single vision interventions to young myopes. This research aimed to update these findings 4 years later. Methods: A self-administrated, internet-based questionnaire was distributed in eight languages, through professional bodies to eye care practitioners globally. The questions examined: awareness of increasing myopia prevalence, perceived efficacy of available strategies and adoption levels of such strategies, and reasons for not adopting specific strategies. Results: Of the 1336 respondents, concern was highest (9.0 ± 1.6; p < 0.001) in Asia and lowest (7.6 ± 2.2; p < 0.001) in Australasia. Practitioners from Asia also considered their clinical practice of myopia control to be the most active (7.7 ± 2.3; p < 0.001), the North American practitioners being the least active (6.3 ± 2.9; p < 0.001). Orthokeratology was perceived to be the most effective method of myopia control, followed by pharmaceutical approaches and approved myopia control soft contact lenses (p < 0.001). Although significant intra-regional differences existed, overall, most practitioners did not consider single-vision distance under-correction to be an effective strategy for attenuating myopia progression (79.6 %), but prescribed single vision spectacles or contact lenses as the primary mode of correction for myopic patients (63.6 ± 21.8 %). The main justifications for their reluctance to prescribe alternatives to single vision refractive corrections were increased cost (20.6 %) and inadequate information (17.6 %). Conclusions: While practitioner concern about myopia and the reported level of activity have increased over the last 4 years, the vast majority of eye care clinicians still prescribe single vision interventions to young myopes. With recent global consensus evidence-based guidelines having been published, it is hoped that this will inform the practice of myopia management in future.

2019

Chamberlain,P., Gonzalez-Meijome,J., Ngo,C., Jones,D., Young,G. A three-year randomised clinical trial of MiSight lenses for myopia control Optometry & Vision Science 2019;96(8):556-567 [ Show Abstract ]

SIGNIFICANCE: Results of this randomized, double-masked clinical trial demonstrate the effectiveness of the MiSight soft contact lens in slowing myopia progression over multiple years.

PURPOSE: The purpose of this study was to quantify the effectiveness of MiSight daily disposable soft contact lens in slowing the progression of juvenile-onset myopia.

METHODS: Myopic children (spherical equivalent refraction, -0.75 to -4.00 D; astigmatism, <1.00 D) aged 8 to 12 years with no prior contact lens experience were enrolled in a 3-year, double-masked, randomized clinical trial at four investigational sites in four countries. Subjects in each group were matched for age, sex, and ethnicity and were randomized to either a MiSight 1-day contact lens (test) or Proclear 1-day (control; omafilcon A) and worn on a daily disposable basis. Primary outcome measures were the change in cycloplegic spherical equivalent refraction and axial length.

RESULTS: Of the subjects enrolled, 75.5% (109/144) completed the clinical trial (53 test, 56 control). Unadjusted change in spherical equivalent refraction was -0.73 D (59%) less in the test group than in the control group (-0.51 ± 0.64 vs. -1.24 ± 0.61 D, P < .001). Mean change in axial length was 0.32 mm (52%) less in the test group than in the control group (0.30 ± 0.27 vs. 0.62 ± 0.30 mm, P < .001). Changes in spherical equivalent refraction and axial length were highly correlated (r = -0.90, P < .001). Over the course of the study, there were no cases of serious ocular adverse events reported. Four asymptomatic corneal infiltrative (one test, three control) events were observed at scheduled study visits.

CONCLUSIONS: Results of this clinical trial demonstrate the effectiveness of the MiSight daily disposable soft contact lens in slowing change in spherical equivalent refraction and axial length.

TRIAL REGISTRATION: ClinicalTrials.gov NCT01729208.

Wolffsohn,J. S., Kollbaum,P. S., Berntsen,D. A., Atchison,D. A., Benavente,A., Bradley,A., Buckhurst,H., Collins,M., Fujikado,T., Hiraoka,T., Hirota,M., Jones,D., Logan,N. S., Lundström,L., Torii,H., Read,S. A., Naidoo,K. IMI - Clinical Myopia Control Trials and Instrumentation Report Invest Ophthalmol Vis Sci 2019;60(3):M132-M160 [ Show Abstract ]

The evidence-basis based on existing myopia control trials along with the supporting academic literature were reviewed; this informed recommendations on the outcomes suggested from clinical trials aimed at slowing myopia progression to show the effectiveness of treatments and the impact on patients. These outcomes were classified as primary (refractive error and/or axial length), secondary (patient reported outcomes and treatment compliance), and exploratory (peripheral refraction, accommodative changes, ocular alignment, pupil size, outdoor activity/lighting levels, anterior and posterior segment imaging, and tissue biomechanics). The currently available instrumentation, which the literature has shown to best achieve the primary and secondary outcomes, was reviewed and critiqued. Issues relating to study design and patient selection were also identified. These findings and consensus from the International Myopia Institute members led to final recommendations to inform future instrumentation development and to guide clinical trial protocols.

2018

Yang,M., Luensmann,D., Fonn,D., Woods,J., Jones,D., Gordon,K., Jones,L. Myopia prevalence in Canadian school children: A pilot study Eye 2018;32(6):1042-1047 [ Show Abstract ]

Purpose: A pilot study to determine the prevalence of myopia, proportion of uncorrected myopia and pertinent environmental factors among children in a suburban region in Canada. Methods: Refraction with cycloplegia and ocular biometry were measured in children of two age groups. Myopia was considered at a spherical equivalent refraction (SER) ≤-0.50 D in at least one eye. Parents completed a questionnaire that captured the child's daily activities. Results: A total of 166 children completed the study (83 aged 6-8 and 83 aged 11-13). Myopia prevalence was 17.5% among the overall group, 6.0% among ages 6-8 and 28.9% among ages 11-13. Mean subjective SER in myopic children was -1.10 D (95% confidence interval (CI), -0.34 to -1.86 D) at ages 6-8 and -2.44 D (95% CI, -1.71 to -3.18 D) at ages 11-13. In this study, 34.5% of the myopic children were uncorrected, which represented 6.0% of the entire group of children. Mean axial length (AL) increased by 1.03 mm from ages 6-8 (mean 22.62 mm; 95% CI, 22.45 to 22.79 mm) to ages 11-13 (mean 23.65 mm; 95% CI, 23.45 to 23.84 mm; p < 0.01). The correlation coefficient between AL and SER was -0.618 (p < 0.01). Binary logistic regression between outdoor time and the prevalence of myopia showed that one additional hour of outdoor time per week lowered the odds of a child having myopia by 14.3% (p = 0.007). Conclusion: Myopia prevalence increased from 6% at ages 6-8 to 29% at ages 11-13. Thirty-five per cent of the myopes in this study were uncorrected. More time outdoors may be beneficial to protect against myopia onset.

2016

Jones,D., Woods,C., Jones,L., Efron,N., Morgan,P. A sixteen year survey of Canadian contact lens prescribing Contact Lens and Anterior Eye 2016;39(6):402-410 [ Show Abstract ]

Purpose To understand long-term contact lens prescribing habits of Canadian optometrists. Methods One thousand optometrists were surveyed annually from 2000 to 2015. Information was requested on the first ten patients examined after receiving the survey. Results Over the 16-year survey period, 1987 optometrists provided information on 19,143 patients. Mean age of the patients was 32.7 ± 14.4 years. Ratio of females to males was 2:1, the ratio of new fits to refits was 2:3. Soft contact lenses represented 94.5% of all fits. Rigid lenses were more often used as a refit compared to a new fit. Over the 16 years, market share for silicone hydrogel materials grew from 0% to 69.6%, mid-water content materials declined from 75.7% to 14.1%. The multifocal market share grew at the expense of spherical designs, with no change in toric lens fitting. Monthly soft lens replacement remained the preferred option at 48.2%, followed by daily disposable at 40.8%; two-weekly replacement declined to less than10% of patients by 2015. Extended wear was likely used to refit and only to a small proportion of wearers, representing 2.6% of SCL by 2015. The lens care system of choice throughout the period was multipurpose solutions, although the proportion for peroxide systems more than doubled by 2015 from 9.6%, to 21.1%. Conclusions Over the 16-year period, SCL material preference changed to silicone hydrogels with monthly replacement being preferred; daily disposables replacing 2-weekly as the alternate. Lens care preference continued to be multipurpose solutions. Rigid lenses appear to be sustained for specialist fitting. © 2016 British Contact Lens Association

2011

Efron,N., Morgan,P. B., Helland,M., Itoi,M., Jones,D., Nichols,J. J., van der Worp,E., Woods,C. A. Soft toric contact lens prescribing in different countries Contact Lens and Anterior Eye 2011;34(1):36-38

Morgan,P. B., Efron,N., Helland,M., Itoi,M., Jones,D., Nichols,J. J., van der Worp,E., Woods,C. A. Global trends in prescribing contact lenses for extended wear Contact Lens and Anterior Eye 2011;34(1):32-35

2010

Efron,N., Morgan,P. B., Helland,M., Itoi,M., Jones,D., Nichols,J. J., van der Worp,E., Woods,C. A. Daily disposable contact lens prescribing around the world Contact Lens and Anterior Eye 2010;33(5):225-227

Efron,N., Morgan,P. B., Helland,M., Itoi,M., Jones,D., Nichols,J. J., van der Worp,E., Woods,C. A. International rigid contact lens prescribing Contact Lens and Anterior Eye 2010;33(3):141-143

Morgan,P. B., Efron,N., Helland,M., Itoi,M., Jones,D., Nichols,J. J., van der Worp,E., Woods,C. A. Twenty first century trends in silicone hydrogel contact lens fitting: An international perspective Contact Lens and Anterior Eye 2010;33(4):196-198

Morgan,P. B., Efron,N., Helland,M., Itoi,M., Jones,D., Nichols,J. J., van der Worp,E., Woods,C. A. Demographics of international contact lens prescribing Contact Lens and Anterior Eye 2010;33(1):27-29

2007

Schulze,M. M., Jones,D. A., Simpson,T. L. The development of validated bulbar redness grading scales Optometry and Vision Science 2007;84(10):976-983 [ Show Abstract ]

PURPOSE: To develop a perceptually and physically based bulbar redness grading scale. METHODS: Digital conjunctival hyperemia photographs were taken using a photo-slit lamp at controlled exposures. Nine participants arranged 25 images on a tabletop over a range of 1.5 m, using separation to represent changes in redness. The position of each image was recorded and normalized for a 0 to 100 scale, and compared to chromaticity of each image obtained using a spectrophotometer. The performance of two versions of the scale (5 and 10 images) and a continuous grading scale was evaluated based on repeatability data collected from nineteen observers who used each scale twice to grade 30 randomly presented images of bulbar redness. RESULTS: Psychophysical scaling was highly correlated between single observers (Pearson's r >or= 0.92, p < 0.05). The averaged subjective grades significantly correlated with chromaticity (r = 0.95 and r = 0.99, p < 0.001 for CIE u* and log u*, respectively). Across all observers, test and retest ratings were highly correlated with either scale (r >or= 0.98), and showed high levels of repeatability expressed by intraclass correlation coefficients (ICC >or= 0.98), correlation coefficients of concordance (CCC >or= 0.96), and coefficients of repeatability (COR <or= 5.64). Despite single unit increment options, the majority of grade values assigned using the discrete scales were distributed in multiples of 5. CONCLUSIONS: Combining psychophysical and physical attributes is a promising method for the development of novel anterior segment scales; the newly developed scales performed well in a clinical setting.

Woods,C. A., Jones,D. A., Jones,L. W., Morgan,P. B. A seven year survey of the contact lens prescribing habits of Canadian optometrists Optometry and Vision Science 2007;84(6):505-510 [ Show Abstract ]

PURPOSE: Little is known about the contact lens prescribing habits of optometrists in North America. The purpose of this survey was to obtain data on the types of lenses and solutions prescribed by Canadian optometrists. METHODS: One thousand Canadian optometrists were surveyed annually over seven consecutive years (2000 to 2006; n = 7000) on their contact lens prescribing preferences. Each survey requested a range of information about the contact lenses prescribed to the first 10 patients after its receipt. RESULTS: Over this time period, 1008 (14.4%) of the surveys were returned, providing data on 9383 fits. During the seven-year period, the ratio of male:female fits was 1:2 (3123:6217, 43 not reported), with a mean age of 31.3 +/- 13.6 years (range 2 to 82 years). The ratio of new fits to refits was 2:3 (3780:5518, 85 not reported), with 91.3% of all fits being soft contact lenses (SCL). Of the SCL fits, 59.5% were spherical, 28.5% toric, 9.7% multifocal, and 2.3% cosmetic tints. Gas permeable (GP) fits were 46.6% spherical, 18.6% toric, 19.5% multifocal, and 6.6% were for orthokeratology (OK). Over the seven-year period, SCL prescribed for continuous wear (CW) increased from 3.2% to 14.3% between 2000 and 2004 and reduced to 8.1% in 2006, for all fits. The use of mid-water content (MWC) materials decreased from 34.6% to 2.7% and the use of silicone hydrogel (SH) lenses increased from 61.4% to 96.2%, for all CW fits. GP lens continuous wear increased from 0.7% to 30.6% of all GP lens fits by 2006. Daily wear (DW) of SH lenses decreased from 49.6% (2000) to 33.7% (2004) and then increased to 86.1% in 2006, for SH fits. MWC SCL fit on a monthly planned replacement (PR) basis reduced in popularity over the seven-year period (75.0% to 39.9%) and in 2006 more patients were fit overall with SH lenses (42.9%). The use of non-PR SCL declined from 20.5% to 4.5% of all fits. Fitting of low-water content lenses also declined (15.1% to 7.0%). High-water content (5.4% to10.2%) and SH lenses (5.4% to 42.9%) both increased. By 2006, the majority of GP lenses fit were with high Dk (HDK) materials (50.3%). CONCLUSIONS: The preferred contact lens modality for Canadian optometrists appears to be DW SCL, which are replaced monthly. The proportion of lenses used for CW peaked in 2004, with SH SCL being the preferred material. The market share for GP lenses remains relatively unchanged, with an increasing proportion used for OK and CW. The launch of DW SH lenses in 2004 resulted in a marked increase in their reported fits, with a similar effect following the launch of a HDK GP lens material for CW.

2003

Hrynchak,P., Hutchings,N., Jones,D., Simpson,T. A comparison of cup-to-disc ratio evaluation in normal subjects using stereo biomicroscopy and digital imaging of the optic nerve head Ophthalmic and Physiological Optics 2003;23(1):51-59 [ Show Abstract ]

The cup-to-disc (CD) ratio evaluated using stereoscopic biomicroscopy was compared with that evaluated by viewing a non-stereo digital image of the optic nerve head. Twenty normal subjects (mean age 26 +/- 4 years) were evaluated by two observers. The average CD ratio was 0.29 with a range of 0-0.80. The intra-class correlations between the observers ranged from 0.82 to 0.96, when comparing horizontal and vertical CD ratios for both evaluation techniques. The mean CD ratio was significantly smaller when viewing the digital image (0.25 +/- 0.01) compared with stereoscopic observation (0.33 +/- 0.03, p < 0.0001). Although the mean differences between the two techniques were small, the percentage of CD ratios that differed by >or=0.2 were between 5 and 25% of evaluations. Caution should be exercised when using stereoscopic and non-stereo digital evaluations of CD ratio interchangeably to assess longitudinal progression in a multi-clinician setting.

2001

Jones,L. W., Jones,D. A. Non-inflammatory corneal complications of contact lens wear Contact Lens and Anterior Eye 2001;24(2):73-79 [ Show Abstract ]

Contact lenses can induce changes in the epithelium, stroma and endothelium of the cornea, all of which can be observed clinically using the slit-lamp biomicroscope. These complications include epithelial microcysts, vacuoles and staining, stromal oedema and vascularization, and endothelial polymegethism and blebs. Each complication can be attributed to one or more aetiological factors such as hypoxia, hypercapnia, tissue acidosis, trauma, hypersensitivity and toxicity. This review outlines the way in which these complications manifest clinically, and consideration is given to management strategies and likely prognoses. Early detection of these conditions and appropriate action can usually prevent more serious ocular complications.

Scientific Presentations

2024

Fromstein S, Guthrie S, Acs M, Caffery B, Di Marco A, Pal S, Ramdass S, Thakrar V, Zeidenberg M, Jones D, Chow A. Clinical Practice Patterns for the Initial Management of Young Myopic Patients in Canada American Academy of Optometry Meeting, Indianapolis, Nov 7, 2024 [ Show Abstract ]

Purpose: To determine how optometrists in Ontario, Canada are managing myopic pediatric patients over time, and identify factors affecting prescribing decisions.

Methods: In a retrospective chart review, children aged 6-10 who had eye exams between 2017-2021 at optometry practices in Ontario were included. Children were grouped based on presenting spherical equivalent refraction (SER) as myopes (≤-0.50D) or pre-myopes (≤+0.75D). A maximum of five unique charts were selected for each age and visit year for each group, for up to 250 files per practice. Demographic information, refraction and recommended interventions (categorized as standard myopia correction with single vision (SV) glasses or contact lenses (CL); myopia control (MC) treatment with MC glasses or soft CL, ortho-keratology (ortho-K), atropine, bifocals/progressives) were recorded. The present analysis examines how myopes were managed at their initial visit. Data were analyzed using a one-way ANOVA with post-hoc pairwise t-tests with Bonferroni correction.

Results: 2920 patients (1162 myopes) were included from 15 practices across Ontario. All practices offered at least 1 form of myopia control. The majority of clinicians recommended SV glasses/CL as the initial intervention across all years studied (93.8% in 2017 to 59.0% in 2021), although the proportion diminished over time. The most prevalent MC treatments prescribed per year were ortho-K in 2017 (3.9%), MC soft CL in 2018 and 2019 (11.8% and 11.7% respectively) and MC glasses in 2020 and 2021 (12.8% and 30.1% respectively). In later years, clinicians recommended myopia control at earlier levels of myopia; compared to 2017, the mean difference in SER with 2019 was 1.40±0.41D (mean±SE) less myopia, with 2020 1.05±0.41D less myopiaand with 2021 1.08±0.39D less myopia (all p.05). The mean age at which MC glasses (8.6±0.2 years) and MC soft CLs (8.9±0.2 years) were recommended was not statistically different, and similar to the age at which SV glasses/CL were first recommended (8.8±0.1 years; all p>.05). There was no significant difference in the refractive error of patients who were recommended MC glasses (-1.92±0.13D) versus MC soft CL (-2.05±0.15D; mean difference 0.13±0.16D, p>.05). Children with high myopia (< -6D) do not appear to be offered myopia control options as initial management. The lower limit of SER for those offered myopia control was -5.50D (MC glasses) as compared to -7.75D for standard myopia correction (SV glasses/CL).

Conclusion: The prescribing behaviour of clinicians in Ontario, Canada changed from 2017-2021 to incorporate myopia control and interventions are being prescribed at earlier stages of myopia. Neither age nor refractive error seem to impact whether the modality of glasses or CL is recommended for myopia control. Children with high myopia may still benefit from myopia control and are currently underserved.

Jones D, Guthrie S, Acs M, Caffery B, Di Marco A, Fromstein S, Pal S, Ramdass S, Thakrar V, Zeidenberg M, Chow A. Initial Clinical Management of Myopic and Pre-Myopic Patients in Ontario, Canada – how has this changed over time? International Myopia Conference, Sanya, Hainan, China, Sep 25 , 2024 [ Show Abstract ]

Purpose: To determine how optometrists in Ontario, Canada are changing their management of myopic and pre-myopic pediatric patients at their initial visit over time

Methods: In a retrospective chart review, charts for 2920 patients aged 6-10 with presenting refraction of ≤-0.50D (myopes) or ≤ +0.75D (pre-myopes) were reviewed. All patients had eye examinations between 2017-2021 at optometry practices in Ontario. A maximum of five unique charts were selected for each age (6, 7, 8, 9, 10) and visit year (2017 to 2021) for each group (myopes, pre-myopes), for up to 250 files per practice. Demographic information, refraction and recommended interventions (categorized as standard myopia correction with single vision (SV) spectacles or contact lenses; myopia control treatment with myopia control spectacles or contact lenses, ortho-K, atropine, bifocals/progressives; and lifestyle changes (increasing outdoor time and reducing screen time)) were recorded. A two-way ANOVA with post-hoc Bonferroni-corrected t-tests were used to determine whether visit year and discussion type differed across myopic and pre-myopic groups at their initial visit.

Results: Optometrists in Ontario, predominantly recommended SV spectacles at the initial visit across the 5 years (89.56% in 2017 to 48.88% in 2021), some optometrists increased the incorporation of myopia control treatments in their discussions over time (increasing from 8.84% in 2017 to 44.84% in 2021, F2,8=31.33, p=0.0002). Patients recommended myopia control are on average 0.58D more myopic than those prescribed standard myopia correction (mean spherical equivalent  standard error for myopia control treatment -1.890.09 DS vs standard myopia correction -1.310.05 DS, F1,1147 = 62.08, p0.05). 95% of optometrists monitor pre-myopic children with no treatment. A small group of optometrists, 0.85%, prescribed bifocals/progressives as an attempt at preventative myopia control, the sole modality employed. Awareness of parental history of myopia increased the likelihood of discussing myopia control with myopic patients (2.63x more likely if one parent was myopic and 4.68x more likely if both parents were myopic). Age and gender did not appear to be factors impacting recommendations for myopia control or lifestyle changes, this was unchanged over the years.

Conclusions
While optometrists in Canada are increasingly integrating evidence-based practices in the clinical management in myopic children and children at risk of myopia, this study reveals knowledge gaps that should be the focus of continuing education programs. Recommendations include: initiating myopia control earlier instead of waiting for further progression of myopic refractive error and discussing lifestyle changes with pre-myopic children for optimal efficacy in delaying the onset of myopia.

McKinney M, Irving E, Jones D, Christian L. Parental Compliance in Response to Vision Screenings in Waterloo, Canada American Academy of Optometry Meeting, Indianapolis, Nov 7, 2024 [ Show Abstract ]

Purpose: Pediatric vision screenings can be offered universally or targeted to high-risk groups. Universal screening programs screen all children for a vision problem. In 2018, the province of Ontario mandated a universal vision screening program for all kindergarten children (age 4-6 years). Following the screening, all parents are informed of the result and are recommended to bring their child to an optometrist for further evaluation. This study evaluates parental compliance in seeking vision care for their child after a vision screening in the Region of Waterloo (ROW).

Methods: All parents/guardians of kindergarten children who participated in the ROW vision screening program were invited to participate in the study. Parents who consented to the study completed a survey to identify 1) if their child had seen an optometrist prior to screening, 2) the result of the vision screening (pass/refer) and 3) whether an appointment was made with an optometrist following the screening. Additional questions were asked if parents reported they did not seek or plan to seek follow-up vision care following the screening, and vision screening results were obtained by public health to confirm result accuracy.

Results: 108 parents from 66 schools responded to the survey from October 2022 to December 2023. 54% (58/108) of parents reported their child had seen an optometrist within 18 months prior to the vision screening. 61% (66/108) of respondents reported their child passed the vision screening (no visual concerns detected). Of those parents that reported a pass, 47% (31/66) incorrectly reported their child passed the screening when they had actually been referred. Finally, 44% (48/108) of parents reported they took their child to an optometrist following the vision screening. Of the 56% (60/108) of parents that did not seek eye care, reasons why included: recently had an eye exam and did not require another one (42%, 25/60), lack of time (28%, 17/60), eye exams perceived not to be important (25%, 15/60), and cost (5%, 3/60).

Conclusion: Over half (54%) of the children screened were already under the care of an optometrist prior to the screening and less than half (44%) of parents were prompted to obtain eye care, including 25% who had already had a previous examination. To improve program efficacy, a targeted vision screening program and increased public education on the difference between vision screenings and eye exams, and the importance of early vision care for children is recommended.

Spafford M, Jones D, Christian L, Labreche T, Furtado N, MacIver S, Irving E. Public Perspectives on Eye Educational Videos and Posters American Academy of Optometry Meeting, Indianapolis, Nov 7, 2024 [ Show Abstract ]

Purpose: Studies have shown that the public has a limited knowledge about common eye conditions, diseases, and procedures, and an inadequate awareness of asymptomatic eye disease. Low health literacy is associated with poor health outcomes that drive underutilization of eye care services. Additional eye and vision education is needed. This beta study examined public perspectives on a set of eye and vision educational materials (EVEMs).

Methods: Five videos (< 30 seconds) and seven posters were developed based on common risks to vision (e.g., glaucoma, diabetes, amblyopia, ultraviolet radiation, macular degeneration). A 14-item REDcap survey was generated to reflect the research team’s knowledge of eye care, eye health literacy, and health messaging. Likert scale items provided five choices (e.g., strongly disagree, disagree, undecided, agree, strongly agree). A convenience sample of 160 eligible Canadian residents (at least 18 years old but not eye care professionals) were surveyed. Informants reviewed either two videos or two posters. Frequency-based scores (range: -2.0 to 2.0) were analyzed for individual survey items and four item categories: 1) Message (specific eye and vision facts), 2) Appeal (i.e., positive, understandable, funny, unscary, important, entertaining), 3) Eye Exam Importance, and 4) Action (motivate, convince, share, book eye exam), using a two-tailed, one-sample t-test (null=0, α=0.05). Only video informants answered Action items. Video and poster category scores were compared (two-tailed independent t-test, α = 0.05).

Results: Forty-four surveys were returned; 35 (22% response rate) were completed and analyzed (11 video informants; 24 poster informants). Informants were 66% female, 31% male, 23.5% (20 to 40 years), 53% (41 to 65 years), and 23.5% ( >65 years). Of the 12 EVEMs, scores were significantly positive for Eye Exam Importance (11), Message (8), and Appeal (6) (t-test≥2.536, p≤0.038). Five EVEMs (glaucoma and child eye exam videos, and macular degeneration/smoking, visual impairment/rehabilitation, and nutrition posters) obtained positive scores for all three of these categories (t-test≥2.679, p≤0.032), while 1 EVEM (glaucoma poster) did not obtain any positive scores for these measures (t-test≤1.750, p≥0.178). The Message score was significantly higher for videos than posters (t-test=2.39, p=0.04). None of the videos obtained significantly positive Action scores (t-test≤0.854, p≥0.418).

Conclusion: The public educational videos and posters tested strongest for Eye Exam Importance, then Message conveyance, followed by Appeal. This feedback approach enables refinement of lower scoring media for further testing. Of concern, despite more effective message conveyance with the videos, informants were not motivated to act (i.e., share the videos or book an eye exam).

2023

Jones D, Guthrie S, Woods J, Nguyen M, Chamberlain P, Hammond D. . Young Adult Acceptance of Dual Focus Myopia Control Soft Contact Lenses British Contact Lens Association Clinical Conference & Exhibition, Manchester, Jun 10, 2023 [ Show Abstract ]

Purpose: Myopia can continue to progress during early adulthood and previously observed acceptance of dual focus contact lenses in adolescents does not verify that progressing young adult myopes will similarly accept potential minor vision compromises when achieving the desired myopia control effect. This study assessed acceptance of dual focus myopia control contact lenses by myopic young adults.

Methods: Habitual single vision (SV) contact lens wearers (age 17-25) were dispensed MiSight 1 day (M1d, omafilcon A, CooperVision, Inc.) for 3 months. The Quality of Vision (QoV) questionnaire (McAlinden, 2010) was performed at baseline, 2 weeks, 1, 2 & 3 months. Frequency, severity and bothersome scores were summed for each vision symptom (e.g. glare) to give a combined metric (Best:0/Worse: 9). Non-parametric repeated measure ANOVA with Wilcoxon post-hoc analysis was used to determine how visual experience in M1d changed over the duration of the study and compared to SV at baseline.

Results: 27/29 of participants completed the study (23F:4M; age 22.5±1.7; SERE -3.55D±1.55D). Subjects self-reported that M1d was worn at least 6 days per week and this wear pattern was sustained over three months, averaging >12h per day (2w: 12.5±1.9h, 1M: 12.6±2.0h, 3M: 12.2±1.7h). Perception of starbursts, hazy vision, blurred vision, distortion, and fluctuating vision were not significantly different in M1d than SV. While glare, haloes, focusing difficulties, depth perception and double vision summed symptom scores at all timepoints were significantly increased compared to SV (range between 2-4 points higher, p<=0.002), 70% of subjects responded that they were likely to continue M1d wear given the likely myopia control benefits.

Conclusion: Full day wear of MiSight 1 day soft contact lenses was well tolerated in young myopic adults with mild increases in a limited number of vision symptoms that had no impact on wear time.

Jones D, Luensmann D, Alton K. The prevalence of refractive error in children in a Canadian rural, First Nation Community 4th World Congress of Optometry O=MEGA23, Melbourne, Sep 8, 2023

2022

Bitton E, Hurteau G, Laplante A, Jones D, Wittich W. Optometry student debt in Canada American Academy of Optometry, San Diego, October, 2022

Christian LW, Rose K, Opoku-Yamoah V, Jones D, Irving EL, McCulloch D, Leat S. Changes in Canadian pediatric optometric vision care in a 14-year period American Academy of Optometry, San Diego, October, 2022

Irving EL, Jones DA, Chow A, Christian LW, Furtado NM, Labreche T, MacIver S, Spafford MM. Eye care literacy: How the public wants to learn 10th Canadian Optometry School Research Conference, Montréal, Canada, Dec 3, 2022

Jones D, Leat S, Rose K, Opoku-Yamoah V, Irving E, McCulloch D, Christian L. Attitudes and practices of pediatric eye care: A survey of Canadian optometrists American Academy of Optometry, San Diego, October, 2022

Jones DA, Christian LW, Rose K, Opoku-Yamoah V, Irving EL, McCulloch DL, Leat SJ. Practices and attitudes toward pediatric eye care 10th Canadian Optometry School Research Conference, Montréal, Canada, Dec 3, 2022

Jones DA, Luensman D, Alton K. The prevalence of refractive error in children in a Canadian rural, first nation community 10th Canadian Optometry School Research Conference, Montréal, Canada, Dec 3, 2022

Opoku-Yamoah V, Leat SJ, Kalpana R, Jones DA, Irving EL, McCulloch DL, Christian LW. Is Canadian pediatric optometric vision care changing? 10th Canadian Optometry School Research Conference, Montréal, Canada, Dec 3, 2022

Postnikoff C, Woods J, Weiss S, Jones D, Kasthurirangan S, Chamberlain P, McNally J. Preliminary modification and adaptation of quality of vision questionnaire for children American Academy of Optometry, San Diego, October, 2022

Postnikoff C, Woods J, Weiss S, Jones D, Kasthurirangan S, Chamberlain P, McNally J. Preliminary modification and adaptation of a visual ability questionnaire for children International Myopia Conference, Rotterdam, Netherlands, September, 2022

2021

Chamberlain,P., Arumugam,B., Jones,D., Logan N., Peixoto-de-Matos S., Young G.. Myopia progression in children on cessation of dual-focus contact lens wear: MiSight 1 day 7-year findings American Academy of Optometry, Boston, 2021

Jones DA, Luensmann D, Alton K, Werner L. The prevalence of refractive error in children in a Canadian rural, First Nation Community
American Academy of Optometry, Boston, 2021 [ PDF ]

2019

Rappon J, Woods J, Jones D, Jones L. Tolerability of novel myopia control spectacle designs Invest Ophthalmol Vis Sci 2019;E-abstract 5845

Rappon JM, Chalberg TW, Neitz M, Woods J, Jones D, Jones L Neitz J. Clinical Development of a Novel Myopia Treatment for Myopia Management The 17th International Myopia Conference, Tokyo, Japan, 2019

2018

Chamberlain P, Jones D, Logan N, Peixoto-de-Matos S, Ngp C, Young G. Comparison of myopia progression in new and established myopia control treatment (MiSight) groups BCLA Asia. Singapore, 2018

2017

Chamberlain P, Back A, Lazon de la Jara P, Jones D. Adaptation of children to daily disposable soft contact lenses British Contact Lens Association Conference, 2017

Chamberlain P, Back A, Lazon de la Jara P, Logan N, Jones D. 3 year effectiveness of a dual-focus 1 day soft contact lens for myopia control British Contact Lens Association Conference, 2017

2016

Back A, Chamberlain P, Logan N, Jones D, Gonzalez-Meijome J, Mei Saw S, Young G. Clinical evaluation of a dual-focus myopia control 1 day soft contact lens - 2-year results Optom Vis Sci 2016;93: E-abstract 160035

Yang M, Luensmann D, Fonn D, Woods J, Gordon K, Jones L, Jones D. Myopia prevalence in canadian school children Optom Vis Sci 2016;93: E-abstract 165328 [ PDF ]

2012

Jones D, Paquette L, Despres M, Nandakumar K, Woods C. Ease of contact lens fitting and training in a child and youth population Contact Lens & Anterior Eye 2012;35, S1:e2

Jones D, Woods C, Paquette L, Nandakumar K. The acceptability of contact lens wear to children and teenagers Contact Lens & Anterior Eye 2012;35, S1:e45-e46

2011

Paquette L, Jones D, Mespres M, Nandakumar K, Woods C. Ease of contact lens fitting and training in a child and youth population Optom Vis Sci 2011;88:E-abstract 115833

2008

Jones D, Jones L. The use of O2Optix Custom in a case of pediatric aphakia Contact Lens & Anterior Eye 2008;31, 5:246

2007

Jones D, Jones L. The use of 02Optix Custom in a case of pediatric aphakia Optom Vis Sci 2007;84: E-abstract 075149

2006

Jones D, Woods C, Jones L, Morgan P. The use of silicone hydrogel contact lenses by Canadian optometrists: 2000-2006 Optom Vis Sci 2006;83: E-Abstract 065281

2005

Woods C, Jones D, Jones L, Morgan P. Canadian optometrists prescribing habits, a six-year period (2000-05) Optom Vis Sci 2005;82: E-abstract 055128

2002

Hrynchak P, Hutchings N, Jones D, Simpson T. A comparison of cup-to-disc ratio measurement in normal subjects using OCT image analysis of the optic nerve head and stereo biomicroscopy Optom Vis Sci 2002;79, 12s:90

2001

Hrynchak P, Simpson T, Jones D, Hutchings N. A comparison of cup-to-disc ratio evaluation in normal subjects using stereo biomicroscopy and a digital image of the optic nerve Optom Vis Sci 2001;78, 12s:65

Jones D, Schulze M, Simpson T. The Application of Clinical Grading Scales by Trained and Non-trained Observers Contact Lens & Anterior Eye 2001;2523-51

Schulze M, Jones D, Simpson T. The Production of an Enhanced Grading Scale for Determination of Ocular Hyperaemia (BCLA 2001 Da Vinci Award) Contact Lens & Anterior Eye 2001;2523-51

2000

Averbeck K, Jones D, Westall C. A comparison of two logmar-based crowded visual acuity tests for the assessment of vision in children American Academy of Optometry, Orlando, 2000

Jones D, Jones L, Dumbleton K, Pritchard N. Recording of contact lens complications using digital image technology Contact Lens & Anterior Eye 2000;23, 4:160

Schulze M, Jones D, Simpson T. The production of an enhanced grading scale for determination of ocular hyperemia Optom Vis Sci 2000;77, 12s:184

1999

Jones D, Jones L, Simpson T. The subjective satisfaction of presbyopes wearing disposable/frequent replacement lenses: a comparison of monovision versus reading over-spectacles Optom Vis Sci 1999;76, 12s:174

Jones D, Jones L, Simpson T. The subjective satisfaction of presbyopes wearing disposable/frequent replacement lenses: a comparison of monovision versus reading over-spectacles Contact Lens & Anterior Eye 1999;22, 4:162

Jones L, Jones D, Franklin V, Tonge S, Tighe B. Multi-purpose solution effects on the clinical performance and spoilation of daily wear monthly planned-replacement contact lenses Contact Lens & Anterior Eye 1999;22, 4:155

Jones L, Jones D, Simpson T. The impact of replacement frequency and care regimen on subjective satisfaction with disposable/frequent replacement lenses Optom Vis Sci 1999;76, 12s:172

Jones L, Jones D, Simpson T. The influence of replacement frequency and care regimens on subjective satisfaction with disposable/frequent replacement lenses Contact Lens & Anterior Eye 1999;22, 4:147

1998

Jones D, Jones L, Franklin V, Tonge S, Tighe B. Multi-purpose solution effects on the clinical performance and spoilation of daily-wear monthly planned replacement contact lenses Optom Vis Sci 1998;75, 12s:276

Jones D, Jones L, Franklin V, Tonge S, Tighe B. Multi-purpose solution effects on the clinical performance and spoilation of daily-wear monthly planned replacement contact lenses B&L ERS Symposium (Prague), 1998

Jones D, Jones L, Franklin V, Tonge S, Tighe B. Multi-purpose solution effects on the clinical performance and spoilation of daily-wear monthly planned replacement contact lenses Tenth Symposium on the Material Science and Chemistry of Contact Lenses (New Orleans), 1998

1997

Jones L, Jones D, Langley C, Houlford M. The influence of solution regimes on the in vivo wettability of Group II and Group IV frequent replacement lenses Contact Lens & Anterior Eye 1997;20171

1996

Jones L, Jones D, Houlford M. A clinical comparison of three polyhexanide-preserved multi-purpose contact lens solutions Optom Vis Sci 1996;73, 12s:95

Jones L, Jones D, Houlford M. A clinical comparison of three polyhexanide-preserved multi-purpose contact lens solutions BCLA Conference (Birmingham, UK), 1996

Jones L, Jones D, Houlford M. A clinical comparison of three polyhexanide-preserved multi-purpose contact lens solutions B&L ERS Symposium (Seville), 1996

Jones L, Jones D, Langley C, Houlford M. Reactive or proactive contact lens fitting - does it make a difference? B&L Symposium (Seville), 1996

1995

Jones D, Jones L. Problems, problems, problems J BCLA 1995;18, 4:139

Jones L, Jones D, Langley C, Houlford M. Reactive or proactive contact lens fitting - does it make a difference? Optom Vis Sci 1995;72, 12s:146

Jones L, Jones D, Langley C, Houlford M. Reactive or proactive contact lens fitting - does it make a difference? BCLA Conference (London), 1995

1994

Jones D, Jones L. Every picture tells a story J BCLA 1994;17, 4:154

Jones L, Davies I, Jones D. The time dependent effect of hydrogen peroxide neutralisation on the fitting characteristics of group IV disposable lenses B&L ERS (Lisbon), 1994

Jones L, Jones D, Langley C. A comparative evaluation of two high Dk aspheric RGP contact lenses J BCLA 1994;17, 4:154

Jones L, Jones D, Langley C. A comparative evaluation of two high Dk aspheric RGP contact lenses B&L ERS (Lisbon), 1994

1993

Jones L, Davies I, Jones D. Effect of hydrogen peroxide neutralisation times on the fitting characteristics of group IV disposable contact lenses Opthal Physiol Opt 1993;14, 1:108

Continuing Education Presentations

2025

Akerman D, Jones D, Thakrar V, Sankaridurg P, Woods C. ZEISS Myopia Control Webinar Mar 20, 2025

Jones D. Treatment Algorithm Myopia Summit, April 12, 2025

Jones D, Flitcroft I. Case Studies

Myopia Summit, April 12, 2025

Michaud L, Jones D, Chow A.. Myopia Revisited: A Practical Learning Session with Panel Discussion Ontario Association of Optometrists, Symposium, March 29, 2025

Weise K, Rhue B, Jones D, Khanal S.. Hot Topic Breakfast - The Future of Myopia Management: Perspectives from Leading Experts SECO International, Atlanta, Georgia, USA, Feb 28, 2025

2024

Jones D. Instruments and diagnostics - IMI review International Myopia Conference, Sanya, Hainan, China, Sep 27 , 2024

Jones D. Confidence in Practice – Your Myopic Patients Deserve the Best Care Webinar: https://cybersight.org/library/lecture-confidence-in-practice-your-myopic-patients-deserve-the-best-care/ Oct 17, 2024 [ Show Abstract ]

During this live webinar, we will discuss the main myopia control modalities, emphasizing factors influencing the choice of modality, and detail the necessary instrumentation for successful myopia management. The webinar will cover identifying at-risk patients, determining the right time to start and stop myopia control, and managing patient and parent expectations. The webinar is designed for both novice and experienced practitioners in myopia control. (Level: All)

Jones D, Thakrar V. Myopia Management - So Many Options, How Do You Choose American Academy of Optometry Meeting, Indianapolis, Nov 7, 2024

Jones D, Woods J. Myopia Control: Do the Benefits Outweigh the Risks? American Academy of Optometry Meeting, Indianapolis, Nov 9, 2024

2023

Jones D. Myopia Control is the Standard of Care! 47th Congress of the International Society of Contact Lens Specialists, Tucson, AZ, USA, Apr 30, 2023

Jones D. Axial Length - The Final Piece of the Puzzle 47th Congress of the International Society of Contact Lens Specialists, Tucson, AZ, USA, Apr 30, 2023

Jones D. State-of-the-art instrumentation for myopia management THE Myopia Meeting, Toronto, Canada, Dec 2, 2023

Jones D. Optical Biometry - The long and the short of it Global Specialty Lens Symposium, Las Vegas, Jan 19, 2023

Jones D. Optical Biometry - The Long And The Short Of It 4th World Congress of Optometry O=MEGA23, Melbourne, Sep 10, 2023

Jones D, Woods J.. Workshop: Multi-function Instruments for Myopia management: A Review of Current Instruments and their Capabilities. British Contact Lens Association Clinical Conference & Exhibition, Manchester, Jun 10, 2023

2022

Carnt N, Jones D. Children and Contact Lenses BCLA Focus Hybrid Conference, Brimingham, UK, Jun 12, 2022

Jones D. Myopia Control: Where we are and where we are going THE Myopia Meeting, Toronto, Canada, Nov 6, 2022

Jones D. Myopia Management – Non-pharmacological options Eye Recommend National Training Event, Victoria, BC, April 23, 2022

Jones D. CORE involvement in the MiSight clinical story 10th Canadian Optometry School Research Conference, Montréal, Canada, Dec 4, 2022

Jones D. Myopia Control - Putting on the brakes Waterloo Eye Institute annual CE and trade show. Markham, ON, Canada, November, 2022

Jones D. Optical Biometry - The long and the short of it Global Myopia Symposium, Virtual, September, 2022

Jones D. Myopia Control - Where Are We now and Where We Are Going Canadian Association of Optometrists Congress, St John's, Newfoundland, Jul 7, 2022

Jones D. Instrumentation for myopia control - what you need to be successful Canadian Association of Optometrists Congress, St John's, Newfoundland, Jul 7, 2022

Jones D. Clinical Pearls New Brunswick Association of Optometrists Annual Meeting (Virtual), Sep 29, 2022

Jones D. Introduction to myopia management New Brunswick Association of Optometrists Annual Meeting (Virtual), Sep 29, 2022

Jones D. Myopia management – non-pharmacological options Eye Recommend National Training Event, Ottawa, Oct 1, 2022

Jones D, Jones L.. Myopia control: The good, the bad and the ugly Canadian Association of Optometrists Congress, St John's, Newfoundland, Jul 7, 2022

Logan N, Jones D. MiSight® 1 day contact lenses what we now know: 6 Years of Evidence and Beyond BCLA Focus Hybrid Conference, Brimingham, UK, Jun 12, 2022

Walline J, Pal S, Jones D. Knowledge is the key to control of myopia Optometry Times EyeCON, Virtual Meeting, Panel Discussion, Marco Island, Florida, USA, Dec 16 , 2022

2021

Jones D. Myopia management – the non-pharmaceutical options The 19th Hong Kong International Optometric Symposium, Virtual Keynote Address, November, 2021

Jones D. Myopia Management in Clinical Practice: Module 1: Why is myopia management essential in clinical practice Canadian Association of Optometrists – Online CE modules for Canadian ODs, March, 2021

Jones D. Myopia Management in Clinical Practice: Module 2: Myopia Management options Canadian Association of Optometrists – Online CE modules for Canadian ODs, March, 2021

Jones D. Myopia Management. Online module for Canadian Certified Optometric Assistants Canadian Association of Optometrists, Virtual presentation, April , 2021

Jones D. Myopia – How to control the Epidemic British Columbia Doctors of Optometry, Virtual Presentation, September 17, 2021

Jones D. Instrument Fundamentals - Workshop Global Myopia Symposium, Virtual Conference, September 19, 2021

Jones D. Multifunction Instruments Global Myopia Symposium, Virtual Conference, September 19, 2021

Jones D. Biometry in Myopia Management IACLE Global Webinar, September 22, 2021

Jones D, Thakrar V. Myopia Management in Clinical Practice: Module 3: How to implement myopia management in to clinical practice Canadian Association of Optometrists – Online CE modules for Canadian ODs, March, 2021

2019

Jones D. Are you being short-sighted about myopia OSI annual summit, Whistler, BC, Canada, 2019

Jones D. Are you being short-sighted about myopia CAO Congress, Victoria, BC, Canada, 2019

2018

Jones D. Myopia management – from research to clinical practice Clinical and Experimental Optometry. Webinar, 2018

Jones D. Myopia, can we control the epidemic Eye Trust Network. Toronto, 2018

Jones D. Examination of the pediatric patient Manitoba Association of Optometrists annual meeting. Brandon, Manitoba, 2018

Jones D. Prescribing for the pediatric patient Manitoba Association of Optometrists annual meeting. Brandon, Manitoba, 2018

Jones D. Controlling the myopia epidemic Manitoba Association of Optometrists annual meeting. Brandon, Manitoba, 2018

Jones D. What went wrong? Manitoba Association of Optometrists annual meeting. Brandon, Manitoba, 2018

Jones D. Myopia Control Ontario Association of Optometrists annual meeting. Toronto, ON, 2018

Jones D. Examination of the pediatric patient Ontario Association of Optometrists annual meeting. Toronto, ON, 2018

Jones D. Myopia- The Epidemic IRIS meeting. Puerta Vallarta, 2018

Jones D. Myopia control, results of MiSight study Training webinar, 2018

Jones D, Woods J. Controlling the myopia epidemic Fall CE Manitoba Association of Optometrists, 2018

Woods J, Jones D. What went wrong? Fall CE Manitoba Association of Optometrists, 2018

2017

Jones D. Myopia – can we control the epidemic? CooperVision annual sales meeting, Orlando, Florida, 2017

Jones D. Myopia. It’s an epidemic, can anything be done? Salon Vision, Montreal, 2017

Jones D. Myopia – The epidemic Nova Scotia Association of Optometrists Annual Meeting, Halifax, NS, 2017

Jones D. Myopia, can we control the epidemic Nova Scotia Association of Optometrists Annual Meeting, Optometric Personnel. Halifax, NS , 2017

Jones D. Pediatrics in Practice Nova Scotia Association of Optometrists Annual Meeting, Optometric Personnel. Halifax, NS , 2017

Jones D. Myopia control – Dream or reality Journées Optométriques. Quebec City , 2017

Jones D. Myopia prevalence and what it means to optometry British Columbia Association of Optometrists, Vancouver, 2017

Jones D, Jones L. Overcoming challenges to growth in a competitive environment Eyerecommend seminar, Costa Rica, 2017

Jones D, Leat S. Children’s Vision School of Optometry & Vision Science 50th anniversary celebration event, 2017

Jones L, Jones D. Retaining patients and sales in today’s optometric practice Eyerecommend seminar, Costa Rica, 2017

2015

Jones D. Pediatrics - when an what to prescribe University of Waterloo CE cruise, 2015

Jones D. Myopia control - dream or reality University of Waterloo CE cruise, 2015

2014

Jones D. Chidren's Vision Pre-School and Beyond Ontario Association of Optometrists annual meeting. Niagara Falls, ON, 2014

Professional Publications

2024

Jones D, MacNeil C, Pal S, Weinstein M.. 3 Min, 49 Sec Video: How Do You Communicate to Kids & Parents as a Team?
Review of Optometric Business 2024, February: Video series - Part 4

Morgan P, Woods CA, Tranoudis IG, Efron N, Jones L, Faccia L, Rivadeneira D, Grupcheva CN, Jones D, Rodriguez Cely LM, Adsersen A, Santodomingo-Rubido J, Muselier-Mathieu A, Vegh M, Erdinest N, Montani G, Itoi M, Bendoriene RL, Mulder J, van der Worp E, van Mierlo T, Ystenaes AE, Romualdex-Oo J, Abesamis-Dichoso C, Gonzalez-Meijome JM, Macedo-de-Araujo RM, Johansson O, Hsiao J, Nichols JJ. International contact lens prescribing in 2023 Contact Lens Spectrum 2024;39, January/February: 20-22,24,26-28

2023

Jones D. The Role of Biometry in Myopia Management https://contactlensupdate.com/2023/04/25/the-role-of-biometry-in-myopia-management/ 2023;71

Jones D, MacNeil C, Pal S, Weinstein M. Unmet Market Needs of Children in Contact Lenses Review of Optometric Business 2023, July: Video series - Part 1

Jones D, MacNeil C, Pal S, Weinstein M. What Is the Best Way to Market CLs as a Great Choice for Children? Review of Optometric Business 2023, September: Video series - Part 2

Jones D, MacNeil C, Pal S, Weinstein M. What Are Your Practice’s Key Gains & Improvements in Myopia Management? Review of Optometric Business 2023, November: Video series - Part 3

Morgan P, Woods CA, Tranoudis IG, Efron N, Jones L, Faccia L, Rivadeneira D, Teufl M, Grupcheva CN, Jones D, Rodriguez Cely LM, Adsersen A, Santodomingo-Rubido J, Bloise L, Erdinest N, Montani G, Itoi M, Bendoriene RL, Mulder J, van der Worp E, can Mierlo T, Romualdez-Oo J, Abesamis-Dichoso C, Gonzalez-Meijome JM, Macedo-de-Araujo RM, Johansson O, Hsiao J, Nichols JJ. International contact lens prescribing in 2022 Contact Lens Spectrum 2023;38, January: 28-35

2022

Bzovey B, Jones D.. Myopia measurements made easy Optician 2022, 18 March: 20-23 [ Show Abstract ]

Whether setting up a new practice, upgrading current equipment or choosing new equipment, the available choices can be overwhelming. There are many decisions to be made, including those based on cost, space and functionality. And with substantial growth opportunities within primary care practice, from services including specialty contact lens practice, dry eye and myopia management, making the right decision is important.
Practitioners looking for innovative instruments to support their myopia control practice should consider the clinical information required to manage their patients, including refractive error, keratometry and axial length. In addition, attention should be given to the footprint that any new equipment takes up.
Practitioners wishing to best utilise valuable practice space with a multi-function instrument can now consider the Myopia Master from Oculus (figures 1 and 2) as a standalone option for their myopia management practice. This sleek, all-in-one unit will check many boxes on the list of clinical measurement and functionality requirements to support this fast-moving area of clinical practice.

Jones D. CAO Position Statement on Myopia Management Canadian Association of Optometrists - Position Statement; Jan 19, 2022

Jones D. Article Review: Long-term Effect of Dual-focus Contact Lenses on Myopia Progression in Children: A 6-year Multicenter Clinical Trial https://contactlensupdate.com/2022/09/01/article-review-long-term-effect-of-dual-focus-contact-lenses-on-myopia-progression-in-children-a-6-year-multicenter-clinical-trial/ 2022;67

Morgan P, Woods CA, Tranoudis IG, Efron N, Jones L, , Merchan BNL, Teufl M, Grupcheva CN, Jones D, Beeler-Kaupke M, Qi P, Tan KO, Rodriguez Cely LM, Belova S, can Beusekom M, Ravn O, Santodomingo-Rubido J, Bloise L, Plakitsi A, Végh M, Erdinest N, Montani G, Itoi M, Bendoriene RL, Mulder J, van der Worp E, Ystenaes AE, Romualdez-Oo J, Abesamis-Dichoso C, Gonzalez-Meijome JM, Macedo-de-Araujo RM, Johansson O, Sim D, Hsiao J, Nichols JJ. International contact lens prescribing in 2021 Contact Lens Spectrum 2022;37, 1: 32-38

2021

Morgan P, Woods CA, Tranoudis IG, Efron N, Jones L, Grupcheva CN, Jones D, Beeler-Kaupke M, Qi P, Tan KO, Rodriguez Cely LM, Belova S, Ravn O, Santodomingo-Rubido J, Bloise L, Plakitsi A, Végh M, Erdinest N, Montani G, Itoi M, Bendoriene RL, Mulder J, van der Worp E, Ystenaes AE, Romualdez-Oo J, Abesamis-Dichoso C, Gonzalez-Meijome JM, Belousov V, Johansson O, Hsiao J, Nicholes JJ.. International contact lens prescribing in 2020 Contact Lens Spectrum 2021;36, January: 26-32 [ Show Abstract ]

This article is our 20th consecutive annual report of international contact lens prescribing for Contact Lens Spectrum. The premise of the work is simple. As an alternative to asking a cross section of contact lens wearers about the lenses that they use and the basis on which the lenses are worn, we move upstream in the process and directly survey those who are fitting contact lenses in numerous markets around the world. This presents a more “leading edge” indicator of contact lens fitting habits; the lenses fitted today are those sold tomorrow. The aim here is to provide summary information for colleagues in clinical practice, industry, and academia about contact lens prescribing behaviors to inform their patient management, research and development, and educational curricula, respectively.

2020

Jones D. Myopia Management: What Are the Options? Optometric Management 2020;June [ Show Abstract ]

There have been alarming predictions regarding the rate of increase of myopia for the next three decades. Of particular concern is the predicted increase in high myopia, with reports that almost 10% of the world’s population will exhibit myopia in excess of -5.00 D by 2050. Given the abundance of evidence in the literature that shows myopia progression can be reduced, practitioners need to be proactive with their young patients and introduce the concept of myopia control as soon as there is evidence of a myopic refractive error. Additionally, practitioners need to be familiar with the treatment options available.

Jones D. Measure Axial Length to Guide Myopia Management Review of Myopia Management 2020;March 1. [ Show Abstract ]

Myopic patients must be managed and monitored closely. Myopia can no longer be considered as a benign refractive error, and it cannot be managed by traditional optical means. With the growing prevalence of myopia, and the increased risk of ocular pathology associated with high myopia, eye care professionals (ECPs) need to assess their patients for risk factors that may lead to its onset.

Jones D. What Myopia Management Is and What It Is Not Review of Myopia Management 2020;July [ Show Abstract ]

Almost without exception, a paper or article written about myopia starts with the alarming statistics and predictions regarding the prevalence of myopia worldwide. Globally, clinicians and researchers are hopefully well aware by now of the projection that by 2050, 50 percent of the world’s population will be myopic. While this traditionally sets the scene for the need for action to combat this epidemic, what exactly does the term myopia management mean, and how can it be put into practice?

Morgan P, Woods CA, Tranoudis IG, Efron N, Jones L, Merchan B, Grupcheva CN, Jones D, Beeler-Kaupke M, Krasnanska J, Belova S, Ravn O, Santodomingo-Rubido J, Taste P, Malet F, Plakitsi A, Végh M, Erdinest N, Montani G, Itoi M, Bendoriene J, Ramos Gómez RL, Pintor R, Mulder J, Van Der Worp E, Lam W, Ystenæs AE, Romualdez-Oo J, Abesamis-Dichoso C, González-Méijome J, Gierow P, Pettersson LA, Hsiao J, Nichols JJ . International Contact Lens Prescribing in 2019 Contact Lens Spectrum 2020;35, January: 26-32 [ Show Abstract ]

Since the turn of the century, we have presented annual overviews of contact lens prescribing trends in Contact Lens Spectrum. The work was initiated to help eyecare practitioners who are active in contact lenses to benchmark their fitting habits against their peers as well as to provide context to researchers in the field working on next-generation products. The database of lens fits collected over this period now exceeds 400,000, and the information has been collected across 71 markets.

In each targeted market, we supply survey forms and request that practitioners complete generic information about the first 10 contact lens fits conducted after receipt. This fundamental approach has remained unchanged since the first survey was conducted in the United Kingdom in 1996, with only minor changes to the form to account for new products becoming available on the market. For example, an option for “anti-myopia” (now termed “myopia control”) lenses was introduced in the 2011 survey to allow us to track developments in that area.

The distribution of the survey form varies. Some markets continue to use paper forms with a reply-paid envelope; others distribute and collect the same form via e-mail or a web-based questionnaire. The work is coordinated in each market by national coordinators who are listed as co-authors of this paper.

The survey forms request information about the age and sex of each contact lens patient fitted in addition to data about the material, design, replacement frequency, and wearing modality of the fitted lenses; anticipated weekly usage; and care system type. Each fit is weighted based on the estimated annualized number of fits for each practitioner. The data are finally collated at both the University of Manchester in the United Kingdom and at the University of Waterloo in Canada.

2019

Jones D. Summary: IMI – Clinical Myopia Control Trials and Instrumentation report ContactLensUpdate.com 2019

Jones L., Jones D., Jones R. Contact lenses: Beyond 2020 Pharma (Australia) 2019, Dec: 12-13

Morgan P, Woods CA, Tranoudis IG, Efron N, Jones L, Aighamdi W, Nair V, Merchan B NL, Teufl M, Grupcheva CN, Jones D, Beeler-Kaupke M, Lan W, Qi P, Tan KO, Krasnanska J, Pult H, Ravn O, Santodomingo-Rubido J, Tast P, Malet F, Plakitsi A, Végh M, Erdinest N, Chande PK, Montani G, Itoi M, Bendoriene, Ramos Gómez RL, Pintor R, Van Der Worp E, Lam W, Ystenæs AE, Romualdez-Oo J, Abesamis-Dichoso C, González-Méijome JM, Belousov V, Sim D, Stabuc Silih M, Gierow P, Pettersson LA, Hsiao J, Nichols JJ. International Contact Lens Prescribing in 2018 Contact Lens Spectrum 2019;34, January: 26-32

2018

Jones D, Woods J. Maximize the opportunity for part-time contact lens wear Contact Lens Spectrum 2018;33, December: 12-13

Jones D, Woods J. Soft torics: Putting things straight Contact Lens Spectrum 2018;33, September: 12-13

Jones D, Woods J. Accommodating presbyopes: Who does it best? Contact Lens Spectrum 2018;33, June: 12-13

Jones D, Woods J. North America - Independence or not? Contact Lens Spectrum 2018;33, March: 14-15

Morgan P, Woods C, Tranoudis I, Helland M, Efron N, Jones L, Merchan N, Teufl M, Van Beusekom M, Grupcheva C, Jones D, Beeler-Kaupke M, Krasnanska J, Pult H, Ravn O, Santodomingo-Rubido J, Tast P, Malet F, Plakitsi A, Végh M, Erdinest N, Jafari A, Montani G, Itoi M, Bendoriene J, Ziziuchin V, Van Der Worp E, Lam W, Ystenæs A, Romualdez-Oo J, Abesamis-Dichoso C, González-Méijome J, Sim D, Stabuc Silih M, Hsiao J, Nichols J. International Contact Lens Prescribing in 2017 Contact Lens Spectrum 2018;33, January: 28-33

2017

Morgan P, Woods C, Tranoudis I, Helland M, Efron N, Jones L, Van Beusekom M, Grupcheva C, Fico F, Jones D, Beeler-Kaupke M, Qi P, Tan K, Krasnanska J, Pult H, Ravn O, Santodomingo-Rubido J, Végh M, Fan C, Erdinest N, Jafari A, Montani G, Itoi M, Chu B, Bendoriene J, Ziziuchin V, Van Der Worp E, Lam W, Ystenæs A, Romualdez-Oo J, Abesamis-Dichoso C, González-Méijome J, Belousov V, Cierow P, Stabuc Silih M, Hsiao J, Nichols J. International Contact Lens Prescribing in 2016 Contact Lens Spectrum 2017;32, January: 30-35

2016

Jones D. Global trends in myopia management: A review ContactLensUpdate.com 2016

Morgan P, Woods C, Tranoudis I, Helland M, Efron N, Jones L, Teufl M, Grupcheva C, Lemos R, Jones D, Beeler-Kaupke M, Qi P, Tan K-O, Belikova J, Pult H, Ravn O, Santodomingo-Rubido J, Malet F, Plakitsi A, Vegh M, Erdinest N, Jafari A, Montani G, Itoi M, Sun B, Bendoriene J, van der Worp E, Pintor R, Monroy J, Chia J, Awasthi S, Lam W, Romualdex-Oo J, Abesamis-Dichoso C, Gonzalez-Meijome J, Gierow P, Stabuc Silih M, Hsiao J, Nichols J. International contact lens prescribing in 2015 Contact Lens Spectrum 2016;31(1):24-29

2015

Morgan P, Woods CA, Tranoudis IG, Helland M, Efron N, Jones L, Dávila-Garcia E, Magnelli P, Teugl IM, Grupcheva CN, Jones D, Beeler-Kaupke M, Tan K, Pesinova A, Pult H, Ravn O, Santodomingo J, Malet F, Plakitsi A, Végh M, Erdinest N, Chande PK, Itoi M, Bendoriene J, van der Worp E, Pintor R, Moroy JL, Chia J, Awasthi S, Lam W, Romualdez-Oo J, Abesamis-Dichoso C, González-Méijome JM, Belousov V, Gierow P, Stabuc Silih M, Hsiao J, Nichols JJ. International contact lens prescribing in 2014 Contact Lens Spectrum 2015;30, 1: 28-33

2006

Morgan P, Efron N, Woods C, Jones D, Grin HJ, Tranoudis Y, Itoi M, van der Worp E, Phillips G, Belousov V, Helland M, Ghunholm-Henriksson IL, Yeo A, Barr J. What contact lenses are fitted today (and tomorrow)? Global Contact Lens 2006;4212-15

Morgan P, Efron N, Woods C, Jones D, Pesnova A, Grein HJ, Tranoudis Y, Chandrinos A, Itoi M, van der Worp E, Phillips G, Belousov V, Helland M, Thunholm-Henricksson IL, Ong A, Hung L, Monatani G, Barr J. International contact lens prescribing in 2005 Contact Lens Spectrum 2006;21, 1: 35-39

Morgan PB, Efron N, Woods CA, Jones D, Pesinova A, Grein HJ, Tranoudis IG, Chandrinos A, Itoi M, van_der_Worp E, Phillips G, Belousov V, Helland M, Thunholm-Henriksson IL, Ong A, Hung LK, Barr JT. International contact lens prescribing in 2005 Contact Lens Spectrum 2006;21, 1: 35-39

2005

Morgan PB, Efron N, Woods CA, Jones D, Grein HJ, Tranoudis Y, Monatani G, Marani E, Itoi M, van der Worp E, Phillips G, Helland M, Thunholm-Henriksson IL, Yeo Chee Hong A, Barr JT. International contact lens prescribing 2004 Contact Lens Spectrum 2005;20, 1: 34-37

1995

Jones L, Jones D. Three and nine O'clock corneal staining Optician 1995;210, 5526: 20-22

Jones L, Jones D. Blepharitis Optician 1995;210, 5522: 32-33

Jones L, Jones D. RGP lens binding (adherence) Optician 1995;210, 5517: 28-29

Jones L, Jones D. SMILE staining and dehydration Optician 1995;210, 5513: 24-25

Jones L, Jones D. Dimple-veil staining Optician 1995;210, 5509: 32

Jones L, Jones D. Superior epithelial arcuate lesions Optician 1995;209, 5500: 32-33

Jones L, Jones D. Corneal staining assessment Optician 1995;209, 5496: 30-32

Jones L, Jones D. Meibomian gland dysfunction Optician 1995;209, 5491: 30-31

Jones L, Jones D, Langley C. The comparative performance of two aspheric rigid gas permeable lens designs Optician 1995;210, 5526: 28-36

Jones L, Jones D, Langley C, Houlford M. The subjective response of 100 consecutive patients to 1-day disposable lenses Optician 1995;211, 5536: 28-32

1991

Jones L, Jones D. Persecon 92E: design and clinical performance Optician 1991;203, 5333: 16-23

Books

2007

Jones L, Jones D. Common Contact Lens Complications: Recognition and Management Elsevier. 2007.

2001

Jones L, Jones D. Slit Lamp Biomicroscopy In: The Cornea , ed. Nathan Efron. Butterworth-Heinemann. 2001.

2000

Jones L, Jones D. Common Contact Lens Complications: Recognition and Management Butterworth-Heinemann. 2000.