Objective To investigate the current situation of visual health of children and adolescents in the primary, junior, and high schools in Shanghai Songjiang District in 2020, and to analyze its influencing factors, so as to provide guidance for the timely intervention of children and adolescents with poor vision. Methods From September to December in 2020, 7 schools in Shanghai Songjiang District were randomly selected as vision monitoring sites to check naked distal vision and the dilated refractive status under non-cycloplegia, including 2 primary schools, 2 junior high schools, and 3 high schools. A stratified cluster random sampling method was used to select 2 036 students to conduct a questionnaire survey. Then the influencing factors of poor eyesight were analyzed. Results Among 2 036 students, there were 1 381(67.83%) students with poor eyesight and 1 111(54.57%) students with myopia. The rates of myopia in primary school junior high school, and high school students were 25.40%, 73.44% and 88.99%, respectively. With the higher of grade, the rate of myopia increased continuously and the linear trend was significant (Z=26.204, P<0.001). Students have many bad habits of using eyes, such as using eyes too close, using eyes for a long time, not positively taking rest and so on. Multivariate analysis showed that female (OR=1.354,95%CI:1.116 - 1.642), myopia of parents (OR=1.470, 95%CI:1.207 - 1.790), and longer time for doing homework (OR=2.903, 95%CI:2.080 - 4.050) were risk factors for poor vision, while outdoor exercise(OR=0.678, 95%CI:0.533 - 0.863) and rest after continuous eye use for 30~40 min(OR=0.686, 95%CI:0.511 - 0.920) were protective factors. Conclusions The rates of poor vision and myopia in children and adolescents in Shanghai Songjiang district are relatively high, which was closely related to the habits and duration of using eyes. It is necessary to increase children and adolescents'outdoor exercise time, to strengthen eye hygiene and health education, and to take regular vision examination and early interventions.
Key words
children and adolescents /
poor eyesight /
myopia /
outdoor activities
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