The Status of Reduced Vision among Primary and Middle School Students in Hangzhou during the 2013-2017 Academic Years and the Relevance of the Classroom Environment
Li Hao, Bing Zhu, Wenying Shi, Hui Liu, Xuhui Zhang, Li Li, Zhangping Yang
Hangzhou Center for Disease Control and Prevention, Hangzhou 310021, China
Abstract:Objective: To describe the status and classroom environment and factors related to reduced vision (RV) among students in Hangzhou. Methods: This was a cross-sectional study using the Chinese National Survey on Students' Constitution and Health for reference. Three schools (one primary school, one middle school and one high school) were randomly selected in each administrative district of Hangzhou by stratified cluster random sampling method in 2013-2017 academic year. A Chi square test and trend Chi square test were used to compare the distribution and severity of visual impairment among different genders, urban and rural areas and school grade levels. A rank correlation analysis was used as the basis for relevance between the qualified rate of the classroom environmental index and the rate of reduced vision. Results: Forty-eight schools and 244 338 students in Hangzhou were included as the subjects of interest. In the past 5 years, the average rate of RV among students in Hangzhou has been 76.44%. The RV rate for females in each grade was higher than males (χ2 =546, P<0.001). The RV rates in the suburbs and counties were higher than in the urban areas (χ2 =5 313, P<0.001). Also, rate was directly proportional to the school grade level. The RV rate in high schools was higher than the rate in junior high schools, which was higher than the rate in primary schools (P<0.001). There was a significant correlation between the chair height compliance rate and the RV rate in the classroom environment with significant differences (r=-0.581, P=0.029). Conclusions: The RV rate among students in Hangzhou is considered to be high. Students in primary schools were at the key stage of developing vision-related problems. Females and county schools need to be of concern.
郝莉 朱冰 施文英 刘辉 张旭慧 李莉 杨章萍. 杭州市2013─2017学年中小学生视力不良现况分析及教学环境的关联作用[J]. 中华眼视光学与视觉科学杂志, 2020, 22(8): 589-595.
Li Hao, Bing Zhu, Wenying Shi, Hui Liu, Xuhui Zhang, Li Li, Zhangping Yang. The Status of Reduced Vision among Primary and Middle School Students in Hangzhou during the 2013-2017 Academic Years and the Relevance of the Classroom Environment. Chinese Journal of Optometry Ophthalmology and Visual science, 2020, 22(8): 589-595. DOI: 10.3760/cma.j.cn115909-20191023-00286
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