title: [A survey of senile cataract among Tibetans in Chang-Du District, Tibet (author's transl)].
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000531:Altitude; D002386:Cataract / Q000453:epidemiology* / Q000209:etiology; D002681:China; D005260:Female; D006801:Humans; D000860:Hypoxia / Q000150:complications; D008297:Male; D008875:Middle Aged; D013472:Sunlight