A disproportionate, stratified, adult, random-sampling procedure was used to select names of Chinese people aged 40 to 79 years from the Singapore electoral register in the Tanjong Sex district in Singapore.
These people were invited to a centralized clinic for a comprehensive eye examination, including refraction. Refraction was also performed on nonrespondents in their homes.
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Myopia, sex myopia, and hyperopia were defined as a spherical equivalent SE in the right eye of less than Astigmatism was defined as less than Anisometropia was defined as a difference in SE of more than 1.
Only phakic eyes were analyzed. From eligible people, Adjusted to the Singapore population, chinese overall prevalence of myopia, hyperopia, astigmatism, and anisometropia was Adult prevalence of high chinese was 9.