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视力好坏将影响学生今后发展,因而了解学生的视力状况,制定合适的防治措施显得十分必要.我们选1所重点中学于1996～1998年对该校1308名高一新生的视力状况进行调查,报告如下.1 对象与方法1.1 对象 永加中学1996～1998年所有高一新生.1.2 方法 采用标准对数视力灯箱,每年9月入学时由专人检查新生双眼远视力,凡裸眼视力低于5.0为视力低下.并采用问卷方式了解该生初中就读学校是城镇或农村学校及重点或非重点班.2 结果与分析2.1 高一新生视力情况 三年共调查1308名高一新生,视力低下率为78.13%(1022/1308),1996～1998年分别为69.66%(567/814)、79.87%(631/790)、83.60%(846/1012).连年间呈明显上升趋势,各年间差异有非常显著性(x~2=53.10,P<0.01).2.2 男女生视力低下状况 三年中视力低下率男生分别为67.46%(340/504)、78.02%(387/496)、82.91%(524/632),女生分别为73.23%(227/310)、82.99%(244/294)、84.74%(322/380).各年男女间差
Visual acuity will affect the future development of students, so as to understand the situation of students’ eyesight, to develop appropriate prevention and control measures is necessary.We selected a key middle school from 1996 to 1998 survey of the school’s vision of 1308 freshmen, The report is as follows.1 objects and methods 1.1 object Yongjia secondary school 1996 ~ 1998 all high school freshmen.1.2 method using standard logarithmic sight light box, every year in September by the examination of new eyes when the distance vision, where uncorrected visual acuity of less than 5.0 Low vision and using questionnaires to understand the student junior high school schools in urban or rural schools and key or non-focus class.2 Results and Analysis 2.1 Freshmen sight conditions Three years investigated a total of 1308 freshmen, the low vision rate was 78.13 (1022/1308) respectively, which were 69.66% (567/814), 79.87% (631/790) and 83.60% (846/1012) respectively from 1996 to 1998. There was an obvious upward trend in successive years with a significant difference between years (X ~ 2 = 53.10, P <0.01) .2.2 The prevalence of vision loss among boys and girls was 67.46% (340/504), 78.02% (387/496) and 82.91% (524/632) respectively in three years ), Girls were 73.23% (227/310), 82.99% (244/294), 84.74% (3) 22/380). Differences between men and women in all years