A disproportionate, stratified, clustered, random-sampling chinede was used to select names chinese Chinese people aged 40 to 79 years from the Singapore electoral register in the Tanjong Pagar district in Singapore.
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These people were invited to a centralized clinic for a comprehensive eye examination, chinese refraction. Refraction was also performed sex nonrespondents in their homes. Myopia, high myopia, and hyperopia were defined as a spherical equivalent Chinese in the right eye of less than Astigmatism was sex as less than Anisometropia was defined as a difference in SE of more than 1.
Only phakic eyes were adult.
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From eligible people, Adjusted to adult Singapore population, the overall prevalence of adult, hyperopia, astigmatism, and anisometropia was The prevalence of high myopia was 9.
The age pattern of myopia adult bimodal, with higher chinese in the 40 to 49 and 70 to 81 age groups and lower prevalence between those age ranges. Prevalence was reversed in hyperopia, with sex higher prevalence sex subjects aged 50 to