Analysis of impaired visual acuity and its influencing factors among primary and middle school students in Jing'an District of Shanghai from 2016 to 2021
Objective Through understanding the Poor eyesight of Primary and secondary school students in Jing'an District of Shanghai and the factors influencing their extracurricular courses and eye-using behaviors,this study Provides a basis for designing more targeted propaganda and education measures to Prevent myopia and Providing relevant policy sug-gestions for health education.Methods From 2016 to 2021,a total of 18 091 students from two primary schools and two secondary schools in the district were selected by cluster sampling method.The questionnaire survey included the time of ex-tracurricular activities and poor eye behavior and habits in the past 7 days,and the refractive development included naked eye vision,vision with glasses and small pupil computer optometry.Cross-sectional analysis of the data was performed,and trend Chi-square test and logistic regression were used for multi-factor analysis.Results From 2016 to 2020,there was an increasing trend of poor visual acuity among primary school students(Lower primary grade x2=41.611,P=0.000,Senior grade of primary school x2=25.494,P＜0.001).According to the survey of eye behavior habits,more than 74.56％of the students who spent less than 0.5 h after class on daily exercise were in all grade groups,but showed a decreasing trend year by year(Lower primary grade x2=38.558,P＜0.001,Senior grade of primary school x2=7.581,P=0.006,Jun-ior middle school group x2=38.748,P＜0.001,High school group x2=51.145,P＜0.001);37.93％～87.20％of the students have various kinds of bad eye behavior habits.Time of daily sports extracurricular courses＜0.5h(OR=1.21,95％CI:1.10-1.32),time of daily learning extracurricular courses＜0.5h(OR=1.07,95％CI:1.00-1.15),students who continuously use their eyes for 30-40 minutes without rest(OR=1.86,95％CI:1.79-1.93),excessively lower their head(OR=1.33,95％CI:1.21-1.46),and students who watch TV from less than 2 m(OR=1.19,95％CI:1.10-1.28)are more likely to have poor vision.Conclusion Schools and families should pay attention to extra-curricular curriculum arrangement of teenagers and guide students to develop proper eye behavior habits,so as to prevent the occurrence of poorvision.
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