中学学生视近习惯与视力低下的关系分析

Relationship between near vision habit and low vision of students of a middle school in Wuhan

目的了解中学学生视力状况,探讨中学生视近习惯与视力低下的关系。方法用多阶段整群抽样方法,对学生进行屈光测定并对其进行问卷调查。结果武汉市某中学学生视力低下率为63.8%;男生视力低下率为60.4%;女生视力低下率为67.5%。影响视力低下发生的视近习惯有:看书距离、看电视距离、课间活动、连续看书1小时以上。结论看书距离和看电视距离越远是视力低下的保护因素,课间活动少、连续看书1小时以上是视力低下的危险因素。

Objective To investigate the vision status and discuss the relationship between near vision habit and low vision of middle school students. Methods Not only was the refraction of all the students in chosen classes examined, but also questionnaire study was carried out. Results Total myopia rate of the school was 63.8%, boys＇ was 60. 4% and girls＇ was 67.5%. Near vision habits that influenced the onset of low vision included reading distance, distance of television, interclass activities, reading more than an hour consecutively. Conclusion Long reading and television distance were the protective factors for low vision, but lack of interclass activities and reading more than an hour consecutively were the risk factors for low vision.