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我们于1989年在西乌旗抽样3所中学,2所小学共计1530名中小学生。其中蒙族学生758名、汉族学生772名;男728名,女802名。视力检测用E型对数(灯光)近视力表,用5分记录法,视力不足5.0者为视力低下。1 调查结果1.1 视力低下与氏族关系蒙族学生1516眼中,视力低下315眼,占21.44％;汉族学生1544眼中,视力低下542眼,占35.10％,蒙汉族学生间有非常显著性差异(P<0.01)。1.2 视力低下与性别关系男1456眼中,视力低下310眼,占21.29％;女1604眼中,视力低下557眼,占34.72％,男女间有非常显著性差异(P<0.01)
We sampled three secondary schools in Xiwuqi in 1989 and a total of 1,530 primary and secondary students in two primary schools. Among them, 758 are Mongolian students and 772 are Han students; 728 are male and 802 are women. Visual acuity test with E-type logarithm (light) near-visual acuity chart, with 5 points record method, visual acuity less than 5.0 for the vision loss. 1 Results 1.1 Poor eyesight and clan relations Among 1516 Mongolian students, 315 eyes had low visual acuity, accounting for 21.44%. Among 1544 Chinese Han students, visual acuity was 542 (35.10%), with significant difference between Mongolian and Han nationality students (P <0.01) ). 1.2 low vision and gender relations Male 1456 eyes, poor eyesight 310, accounting for 21.29%; female 1604 eyes, 557 eyes, 55.7 eyes, accounting for 34.72%, there was a significant difference between men and women (P <0.01)