[A blindness prevention monitoring system and its application]

The authors conducted a survey of blindness and low vision in the population of 49,770 in Zhong Ning County of Ningxia Province and opened up blindness prevention and treatment with emphasis on cataract. Sight was restored to 88% of the curable blind, bringing down the rate of blindness from 0.24% to 0.14%. A blindness prevention monitoring system of 4 levels was established and its application and significance in the prevention of blindness explored.