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目的了解兰州铁路地区中小学生的视力状况,研究可能引起视力低下的原因和发展趋势,为有针对性地开展预防保健工作提供依据,以进一步做好青少年视力保护工作。方法对2003～2009年兰州铁路地区中小学生的健康体检资料进行统计。结果 2003～2009年兰州铁路地区中小学生视力低下率有逐年上升的趋势。小学、初中、高中呈递增趋势,各学习阶段视力低下率比较有显著性差异。结论近视的发生、发展与长期用眼过度、课业负担过重及膳食营养、遗传、环境等因素有关,因此要在这些方面做好青少年视力保护工作。
Objective To understand the visual acuity of primary and secondary school students in Lanzhou railway area and to study the causes and development trends that may cause low visual acuity so as to provide a basis for carrying out targeted preventive health care work so as to further improve the visual acuity protection for adolescents. Methods The health examination data of primary and middle school students in Lanzhou Railway from 2003 to 2009 were collected. Results 2003-2009 Lanzhou railway primary and secondary school students have a low rate of vision has increased year by year. Primary school, junior high school, high school showed an increasing trend, the visual acuity of each stage of learning was significantly different. Conclusions The occurrence and development of myopia are related to long-term overuse of eyes, overburdening of schoolwork and dietary nutrition, genetics, environment and other factors. Therefore, it is necessary to do a good job of visual acuity protection for adolescents in these aspects.