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Type: Journal article
Title: Prevalence and Causes of Visual Impairment in Rural Myanmar: The Meiktila Eye Study
Author: Casson, R.
Newland, H.
Muecke, J.
McGovern, S.
Durkin, S.
Sullivan, T.
Oo, T.
Aung, T.
Shein, W.
Selva-Nayagam, D.
Aung, T.
Citation: Ophthalmology, 2007; 114(12):2302-2308
Publisher: Elsevier Science Inc
Issue Date: 2007
ISSN: 0161-6420
Statement of
Robert J. Casson, H.S. Newland, J. Muecke, S. McGovern, S. Durkin, T. Sullivan, T.Z. Oo, T.H. Aung, W.K. Shein, D. Selva and T. Aung
Abstract: <h4>Objective</h4>To determine the prevalence and causes of visual impairment in the Meiktila district of central, rural Myanmar.<h4>Design</h4>Population-based cross-sectional study.<h4>Participants</h4>Random, stratified, cluster sampling of the inhabitants 40 years of age and older from villages in the Meiktila district was performed; 2481 eligible participants were identified and 2076 participated in the study.<h4>Methods</h4>The ophthalmic examination included presenting and pinhole Snellen visual acuity with an illiterate E chart, slit-lamp examination of the anterior segment, and dilated stereoscopic fundus examination. The principal cause of visual impairment was recorded.<h4>Main outcome measures</h4>Visual impairment and blindness were defined by both presenting and corrected visual acuity according to World Health Organization criteria: better eye < 6/18 and < 3/60, respectively.<h4>Results</h4>Comprehensive examinations, including Snellen visual acuity, were performed on 2073 participants (83.6%) The prevalence estimate of presenting visual impairment was 40.4% (95% confidence interval [CI], 36.1-44.7) and of presenting blindness was 8.1% (95% CI, 6.5-9.9). After pinhole correction, the corresponding prevalences were 26.8% (95% CI, 23.5-30.1) and 5.3% (95% CI, 4.0-6.6). Cataract, uncorrected refractive error, and glaucoma were the most common causes of visual impairment.<h4>Conclusions</h4>Visual impairment and blindness remain major public health problems in rural Myanmar. Specific programs directed toward reducing the cataract burden need to be implemented.
Keywords: Humans
Refractive Errors
Cross-Sectional Studies
Visual Acuity
Middle Aged
Visually Impaired Persons
Rural Population
Description: Copyright © 2007 American Academy of Ophthalmology Published by Elsevier Inc.
DOI: 10.1016/j.ophtha.2007.02.004
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