天津市小学生使用电子产品对视力不良的影响

了解小学生使用电子产品对视力不良的影响,为小学生预防视力不良健康教育干预提供依据.方法 采用分层整群随机抽样的方法,对天津市1 404名小学生进行视力检查和用眼情况问卷调查.结果 天津市小学生视力不良检出率为43.1%,其中女生(47.4%)高于男生(39.2%),差异有统计学意义(x2=9.515,P=0.002).学生视力不良检出率随年级升高而增加,差异有统计学意义(x2=73.246,P<0.01).是否在暗环境下使用电子产品(x2=10.377)、是否使用计算机(x2 =4.962)、是否使用手机(x2=7.533)、每日使用手机时长(x2=10.454)、眼睛距手机屏幕距离(x2=7.016)、是否使用平板计算机(x2=4.392)和每日使用平板计算机时长(x2=5.555)组间小学生视力不良检出率差异均有统计学意义(P值均<0.05).Logistic回归分析显示,三年级及以上、女生、在暗环境下使用电子产品和每日使用手机时长≥1.0h是小学生发生视力不良的危险因素(P值均<0.05).结论 天津市小学生使用电子产品影响视力.应对小学生使用电子产品行为进行规范指导.

Effect of electronic products on poor eyesight among primary school students in Tianjin

Objective To investigate the prevalence and effect of electronic products on poor eyesight among primary school students in Tianjin,and to provide evidence for the prevention of poor eyesight by using electronic products scientifically.Methods The visual examination and questionnaire survey were conducted among 1 404 primary school students in Tianjin by using stratified cluster random sampling method.Results The detection rate of poor eyesight in primary school students in Tianjin was 43.1%,and the detection rate of girls' poor eyesight (47.4%) was significantly higher than that of boys' (39.2%)(x2 =9.515,P=0.002).The detection rate of poor eyesight increased with the rise of grade,and the difference was statistically significant (x2 =73.246,P<0.01).The differences between poor eyesight detection rate of primary school students and use of electronic products in the dark (x2=10.377),use of computers (x2 =4.962),use of mobile phones (x2 =7.533),use of tablets (x2 =4.392),daily time spend on mobile phones and tablets (x2 =10.454,x2 =5.555),the distance between eyes and the screen of the mobile phone (x2 =7.016) were statistically significant(P<0.05).According to results of Logistic regression analysis,the risk factors of poor eyesight in primary school students were being above second grade,girls,use of electronic products in the dark and daily time spend on mobile phones more than one hour (P<0.05).Conclusion The use of electronic products affects their eyesight,and use of electronic products in the dark and daily time spend on mobile phones more than one hour are risk factors for their poor eyesight.Primary school students should be standardized in their use of electronic products to prevent poor eyesight.