Objective: The purpose of this study was to describe the status quo and related factors on low vision (LV) among students of Beijing. Methods: All the students in Beijing were included as the subjects of interest, based on the reference of the Chinese National Survey on Students' Constitution and Health. Results: The overall rate of LV among students in Beijing was 58.6% in 2017, with 61.6% in females, higher than 55.9% in males. LV also appeared higher in urban than in rural areas. The rates of LV appeared as 46.8%, 78.0%, 89.0%, 71.0%, in students from primary, middle, high or vocational high schools, respectively. Rates on light, moderate or severe LV were 8.4%, 17.8% and 32.5%, respectively. Conclusions: The overall rate of LV among students in Beijing was considered high. Students in preschool, in 4-6 grades and the 2(nd) grade of middle schools, were at the key stages of developing vision-related problems. Factors as heavy load on homework, lack of outdoor activities and 'limit of vision space' as well as incorrect reading behavior during puberty, need to be of concern.
目的： 了解北京市中小学生视力不良现状，确定重点人群，探索主要影响因素，为制定干预政策和措施提供科学依据。 方法： 参照《全国学生体质健康调研细则》的要求，对全市普通中小学校的在校学生进行视力检查。 结果： 2017年北京市中小学生视力不良检出率为58.6%。女生（61.6%）高于男生（55.9%）。城区（61.3%）高于郊区（54.6%）。视力不良检出率小学为46.8%，初中为78.0%，普通高中为89.0%，职业高中为71.0%。轻度、中度和重度视力不良检出率分别为8.4%、17.8%和32.5%。 结论： 北京市中小学生视力不良率处于全国较高水平。学前、小学四至六年级和初中二年级是关键阶段。城市学生是重点干预对象。学习压力大、室外运动不足、视觉空间小等因素是导致学生视力不良的主要原因，另外儿童青春期的用眼卫生不容忽视。.
Keywords: Cross-sectional study; Low vision; Student.