Prevalence, causes, magnitude and risk factors of visual impairment
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Original article
Prevalence, causes, magnitude and risk factors of visual impairment and blindness in Sri Lanka C Banagala1, C Gilbert2, G V S Murthy2,3, E Schmidt4, P G Mahipala5, K Edussuriya6, K M K Gamage1, RP Kumara7, S A H K Wimalarathne7 on behalf of the National Sri Lanka Steering Committee and National Blindness, Visual Impairment and Disability Survey Team 8
Abstract Introduction There is paucity of data on the epidemiology of visual impairment in Sri Lanka. Objectives Estimate the prevalence and determine causes and risk factors of visual impairment among adults aged 40 years in Sri Lanka. Methods Multistage, stratified, cluster random sampling was used to select a nationally representative sample aged 40 years. All participants underwent vision testing, autorefraction and a basic eye examination. Participants with a presenting acuity of
