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Association Between Adherence to Glasses Wearing During Amblyopia Treatment and Improvement in Visual Acuity

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journal contribution
posted on 15.11.2016, 14:37 by Gail D. E. Maconachie, Shegufta Farooq, Glen Bush, Julie Kempton, Frank A. Proudlock, Irene Gottlob
Importance Occlusion dose monitors have helped establish that better adherence to occlusion is associated with improved visual outcomes in patients undergoing amblyopia treatment. However, the role of adherence to glasses wearing is unknown. Objectives To establish the feasibility and reliability of objectively monitoring adherence to glasses wearing using age-based norms, establish the association between adherence to glasses wearing and improvement in visual acuity (VA) after optical treatment and occlusion therapy, and analyze the effect of age, sex, refractive errors, type of amblyopia, and adherence to glasses wearing on improvement in VA. Design, Setting, and Participants A prospective, observational, nonmasked, cohort study was conducted between June 8, 2008, and June 30, 2013, among patients at a pediatric ophthalmology clinic of a tertiary care hospital who were newly diagnosed with anisometropic and/or strabismic amblyopia and had not undergone previous treatment. The study consisted of a glasses phase (18 weeks) and a patching phase (glasses and occlusion for 10 hours per day for 12 weeks). Reliability of the glasses monitors was assessed by comparing diary entries and monitor recordings in adults. Interventions Objective monitoring of glasses wearing and occlusion. Main Outcomes and Measures Adherence to glasses wearing (hours per day) and effect on VA. Results Among 20 children with anisometropia (mean [SD] age, 6.20 [2.16] years; 11 boys and 9 girls) and 20 with strabismic or mixed amblyopia (mean [SD] age, 4.90 [1.36] years; 10 boys and 10 girls), adherence to glasses wearing was successfully monitored in all but 1 patient. Agreement between diaries and monitored times wearing glasses in adults was high (intraclass correlation coefficient, 1.00; 95% CI, 0.999-1.00). Median (SD) adherence to glasses wearing was 70% (25.3%). A moderate correlation was observed between adherence to glasses wearing and percentage improvement in VA during the glasses phase (r = 0.462; P = .003). Multiple regression revealed that age (β = –0.535; P = .001), type of amblyopia (β = –0.347; P = .02), and adherence to glasses wearing (β = 0.287; P = .04) were independently associated with improvement in VA after the glasses phase and explained 42% of the variability (F3,35 = 8.457; P < .001). A strong correlation between glasses wearing and occlusion adherence was observed (r = 0.719; P < .001). Conclusions and Relevance The results suggest that adherence to glasses wearing is less than optimal and highly variable but is important in achieving good VA. This study emphasizes the importance of encouraging children to not only have good adherence to occlusion therapy but also to glasses wearing.

History

Citation

JAMA Ophthalmology, 2016,134(12), pp.1347-1353

Author affiliation

/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY/MBSP Non-Medical Departments/Neuroscience, Psychology and Behaviour

Version

AM (Accepted Manuscript)

Published in

JAMA Ophthalmology

Publisher

American Medical Association (AMA)

issn

2168-6165

eissn

2168-6173

Acceptance date

21/08/2016

Copyright date

2016

Available date

01/01/2018

Publisher version

http://jamanetwork.com/journals/jamaophthalmology/article-abstract/2556190

Notes

The file associated with this record is embargoed until 12 months after the date of publication. The final published version may be available through the links above.

Language

en

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