【摘要】 采用非概率整群抽样的方法,抽取黄石市十六中学初一至初三年级学生共500名,检测视力,并进行问卷调查,了解影响视力的相关因素。初中生视力不良率为65.24%,且视力不良率随年龄的增长呈上升趋势。学生视力下降的原因主要与长时间用眼、用眼姿势不良、做眼操质量差、睡眠不足等有关。初中生的视力问题不容乐观,须引起全社会的关注。更多还原

【Abstract】 Using of non-probability cluster sampling method,500 students from 1st grade to 3rd grade of Huangshi 16th middle school were chose,then tested their vision,and conducted a questionnaire survey,we ultimately get access to understanding the related factors affecting the visual.Among those surveyed students,65.24 % students are bad eyesight,and the ratio are growing along with age.Poor eyesight has much to do with the long use of eyes,the harmful gesture and the lack of knowledge of nutrition,lack of sleep,and so on..The middle school students’ vision is not optimistic,It must be aroused the concern of the whole society.更多还原