A survey of blindness and cataract surgery in Doumen County, China.


PURPOSE To assess blindness prevalence and that caused specifically by cataract in rural southern China. DESIGN Population-based, cross-sectional study. PARTICIPANTS A total of 5342 persons older than 50 years of age. METHODS Visual acuity and eye examinations were performed in the summer of 1997 in a random sample of villages in Doumen County… (More)


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