Refractive Errors in Singapore and Xiamen, China—A Comparative Study in School Children Aged 6 to 7 Years

Abstract

The myopia rate in Singapore city was higher than in Xiamen city; the lowest rates were found in Xiamen countryside. As the Chinese population from all three sites is of similar genetic stock (predominantly from Southern China), it is postulated that the differences in myopia rates in these three localities may be related to environmental factors.