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1982年,我们在海南对所属五县35所中小学的552 名中小学生进行了视力调查。统一用“E”字型国际标准视力箱。结果:总视力不良率8.53％;城镇学生视力不良率14.08％,农牧区学生视力不良率3.71％(X~2=376.68.P<0.01);城镇小学生视力不良率9.12％.农牧区中学生5.17％,(X~2=19.15.P<0.01)。学生视力不良率随年级升高而增加,小学5.60％,初中12.22％,
In 1982, we surveyed 552 primary and secondary school students in 35 primary and secondary schools in five counties in Hainan. Unified use of “E” fonts international standard vision box. Results: The total bad eyesight rate was 8.53%, the poor eyesight rate of urban students was 14.08%, the poor eyesight rate was 3.71% (X ~ 2 = 376.68.P <0.01) 5.17%, (X ~ 2 = 19.15.P <0.01). Students with poor visual acuity increased with the grade, primary 5.60%, junior high school 12.22%