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随着感染性眼病的减少和人口平均寿命的延长，老年性白内障已成为主要致盲眼病。1989年10月至1990年6月，我们对徐州市部分41岁以上中学教师进行老年性白内障发病情况调查，现将结果报告如下。1对象和方法1．1对象为徐州市41岁以上中学教师，探眼视力7，眼部无其他病I卫改变者
With the reduction of infectious eye diseases and the prolonged life expectancy of the population, senile cataracts have become the main blinding eye disease. From October 1989 to June 1990, we investigated the incidence of senile cataract among some schoolteachers over the age of 41 in Xuzhou City. The results are reported below. 1Objects and methods 1.1 The subjects are Xuzhou middle school teachers aged over 41 years old. They have vision 7 and no other diseases.