Journal article
Self correction of refractive error among young people in rural China: Results of cross sectional investigation
M Zhang, R Zhang, M He, W Liang, X Li, L She, Y Yang, G MacKenzie, JD Silver, L Ellwein, B Moore, N Congdon
BMJ Online | B M J PUBLISHING GROUP | Published : 2011
DOI: 10.1136/bmj.d4767
Abstract
Objective: To compare outcomes between adjustable spectacles and conventional methods for refraction in young people. Design: Cross sectional study. Setting: Rural southern China. Participants: 648 young people aged 12-18 (mean 14.9 (SD 0.98)), with uncorrected visual acuity ≤6/12 in either eye. Interventions: All participants underwent self refraction without cycloplegia (paralysis of near focusing ability with topical eye drops), automated refraction without cycloplegia, and subjective refraction by an ophthalmologist with cycloplegia. Main outcome measures: Uncorrected and corrected vision, improvement of vision (lines on a chart), and refractive error. Results: Among the participants, 59..
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Funding Acknowledgements
This study was funded by grant to the Nuffield Laboratory of Ophthalmology (University of Oxford) from the Partnership for Child Development, (Imperial College of Science, Technology and Medicine) under the World Bank's FY2009 Development Grant Facility (DGF) Window 1. The adjustable spectacles used in this study were provided free of charge by Adaptive Eyecare. The study sponsor played no role in study design and the collection, analysis, and interpretation of data and the writing of the article and the decision to submit it for publication.