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R. Lavanya, W. T. Tay, T. Aung, D. T. H. Tan, S.-M. Saw, J. J. Wang, T. Y. Wong, The Singapore Malay Eye Study (SiMES); Prevalence and Outcomes of Cataract Surgery in an Asian Population: The Singapore Malay Eye Study (SiMES). Invest. Ophthalmol. Vis. Sci. 2008;49(13):2869.
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© ARVO (1962-2015); The Authors (2016-present)
To describe the prevalence and outcomes of cataract surgery in an urban Malay population in Singapore.
A population based study of 3,280 (78.7% response rate) Malay people aged 40-80 years in Singapore. Participants had a standardized interview and comprehensive ocular examination, including assessment of lens status and measurement of presenting and best corrected visual acuity (VA). Eyes that were pseudophakic and aphakic were defined as previous cataract surgery. Blindness was defined as VA worse than or equal to 20/400 in the better seeing eye (LogMAR >1.30); low vision as VA worse than 20/60 but better than 20/400 in the better seeing eye (0.48< LogMAR <1.30). The causes of poor visual outcome, defined as best corrected visual acuity (BCVA) of worse than 20/60 in the cataract operated eye for unilateral surgeries and in the better seeing eye for bilateral cataract surgeries were examined.
Of 3,280 participants, 285 (men 52.3%) had cataract extraction in at least 1 eye (standardized prevalence 4.8%; 95% CI: 4.6-4.9%), and of the 285 persons, 154 (54%) had bilateral extractions (standardized prevalence 2.5%; 95% CI: 2.4-2.6%) Older age (odds ratio [OR] for per 10 years older, 2.7, 95% CI: 2.2-3.2), men (OR 1.6; 95% CI: 1.0-2.5) and the presence of diabetes (OR 2.4; 95% CI: 1.8-3.2) were associated with having cataract surgery. Poor visual outcomes were seen in 11% (n=48) of all cataract operated eyes. Diabetic retinopathy (25.0%), glaucoma (16.7%), posterior capsular opacification (14.6%), and age-related macular degeneration (12.5%) were the most common primary causes of poor visual outcomes.
The prevalence of cataract surgery was 5% in Malays, similar to a previous study among Chinese persons in Singapore. Diabetic retinopathy was the primary cause for poor visual outcome, emphasizing the need for regular retinal examinations among cataract operated subjects with diabetes.
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