Simplified recording of soft contact lens fit

Wolffsohn, James S.; Hunt, Olivia; Basra, Amritpreet K.

doi:10.1016/j.clae.2008.12.004

Cited by 66 publications

(62 citation statements)

References 20 publications

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“…13 This study demonstrated that there is more to understand about ionic permeability of soft contact lenses. In future studies, we suggest that would be important the simultaneous evaluation of ionic conductivity and on-eye lens performance; measure ionic permeability in high myopic lens (above -6.00D) and positive lens (thicker at the lens center might be worse this parameter); evaluate if the ionic permeability decrease is accompanied by changes in the dynamic behavior of the contact lenses on the eye.…”

Section: Discussionmentioning

confidence: 74%

Reduction in ionic permeability of a silicone hydrogel contact lenses after one month of daily wear

Silva¹,

Compañ²,

González-Meijóme³

2015

Mater. Res. Express

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Purpose: To compare the ionic permeability using the ionoflux method of new and worn samples of a silicone hydrogel contact lens material.Methods: An ionoflux experimental setup was established to measure the ionic permeability (NaCl) of soft contact lenses. Samples of a silicone hydrogel lens (Comfilcon A, Coopervision, Pleasanton, CA) with optical powers of -1.00, -1.50 and -4.75 diopters (D) were used in this study. Three samples of each power were measured after being worn for 1 month on a daily wear basis. Lenses were cleaned and disinfected every night multipurpose disinfecting solutions. Three samples of new lenses from the same batch were also measured to evaluate the effect of lens wear on the ionic permeability of the lens material. Before measurement, the lenses were previously equilibrated with a solution of NaCl 1M during one week before of each measurement. Results:The apparent ionic permeability between lenses with -1.00 and -1.50 D increment 15 % in the -1.50D.In the case of -1.00 and -4.75 D lenses there is an increase of 26%. Conclusions:The ionic permeability of silicone hydrogel lenses of different optical powers was not significantly different. Worn lenses present a significant reduction of the ionic permeability after a month of wear.

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Section: Discussionmentioning

confidence: 74%

Reduction in ionic permeability of a silicone hydrogel contact lenses after one month of daily wear

Silva¹,

Compañ²,

González-Meijóme³

2015

Mater. Res. Express

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“…10,16,17 However, image analysis techniques can predict the average experienced clinician grade, 2 but are many times more sensitive and reliable than subjective grading. 18 As the current practice for anterior eye health recording is not known, this study builds on previous studies to improve the evaluation and recording of soft and gas permeable contact lens fit 19,20 by surveying eye care practitioners from around the world in order to inform guidelines on best practice. The number of features of the anterior eye graded had a median of 11 and range of 1 to 23 features ( Table 1).…”

Section: Introductionmentioning

confidence: 99%

Anterior eye health recording

Wolffsohn

Naroo

Christie

et al. 2015

Contact Lens and Anterior Eye

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link AbstractAims: To survey eye care practitioners from around the world regarding their current practice for anterior eye health recording to inform guidelines on best practice. Methods:The on-line survey examined the reported use of: word descriptions, sketching, grading scales or photographs; paper or computerised record cards and whether these were guided by proforma headings; grading scale choice, signs graded, level of precision, regional grading; and how much time eye care practitioners spent on average on anterior eye health recording. Results:Eight hundred and nine eye care practitioners from across the world completed the survey. Word description (p<0.001), sketches (p=0.002) and grading scales (p<0.001) were used more for recording the anterior eye health of contact lens patients than other patients, but photography was used similarly (p = 0.132). Of the respondents, 84.5% used a grading scale, 13.5% using two, with the original Efron (51.6%) and CCLRU/BrienHolden-Vision-Institute (48.5%) being the most popular. The median features graded was 11 (range 1 to 23), frequency from 91.6% (bulbar hyperaemia) to 19.6% (endothelial blebs), with most practitioners grading to the nearest unit (47.4%) and just 14.7% to one decimal place. The average time taken to report anterior eye health was reported to be 6.8±5.7 minutes, with the maximum time available 14.0±11 minutes. Conclusions:Developed practice and research evidence allows best practice guidelines for anterior eye health recording to be recommended.

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“…Comprehensive capture of relevant information in a limited time requires a structured approach, the ability to differentially diagnose and the appropriate use of abbreviations. This work builds on previous studies to improve the evaluation and recording of soft and gas permeable contact lens fit, 7,8 surveying current practice by eye care practitioners across the world in this area and uses the results to propose the refinement of practice based taking of history and symptoms on current academic evidence.…”

Section: Introductionmentioning

confidence: 99%

History and symptom taking in contact lens fitting and aftercare

Wolffsohn

Naroo

Christie

et al. 2015

Contact Lens and Anterior Eye

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract Aim: To appraise history and symptom taking for contact lens consultations, to determine current practice and to make recommendations for best practice. Permanent repository link Method:The peer reviewed academic literature was reviewed and the results informed a survey completed by 256 eye care practitioners (ECPs) on their current practice and influences. Results:The last eye-test date, last contact lens aftercare (for existing wearers) and reason for visit are key questions for most ECPs. Detailed use of contact lens questions are more commonly applied in aftercares than when refitting patients who have previously discontinued wear (87% vs 56% use), whereas questions on ocular and general history, medication and lifestyle were generally more commonly utilised for new patients than in aftercares (72% vs 50%). 75% requested patients bring a list of their medication to appointments. Differential diagnosis questioning was thorough in most ECPs (87% of relevant questions asked). Attempts to optimise compliance included oral instruction (95% always) and written patient instructions (95% at least sometimes). Abbreviations were used by 39% of respondents (26% used ones provided by a professional body). Conclusion:There is scope for more consistency in history and symptom taking for contact lens consultations and recommendations are made.

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Simplified recording of soft contact lens fit

Cited by 66 publications

References 20 publications

Reduction in ionic permeability of a silicone hydrogel contact lenses after one month of daily wear

Reduction in ionic permeability of a silicone hydrogel contact lenses after one month of daily wear

Anterior eye health recording

History and symptom taking in contact lens fitting and aftercare

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