This cohort study aimed to assess the change of refractive status in Chinese school children.
A cohort study was conducted in 96 primary and secondary schools in 16 districts of Tianjin from 2018 to 2020, including about 36452 people totally. The changes in myopia rate in 3 years were compared by a generalized estimation equation. The distribution of average equivalent spherical mirror and different regions and grades was evaluated by linear regression analysis, and the correlation between the equivalent spherical mirror and different gender, nationality, and age was evaluated.
Study Type
OBSERVATIONAL
Enrollment
36,452
This cohort study aimed to assess the change of refractive status in Chinese school children under different outdoor time
Tianjin Eye Hospital
Tianjin, China
RECRUITINGrefractive error
The changes in refractive error were compared by generalized estimation equation.
Time frame: change from baseline at 36 months
sex disparity
The changes in refractive error were compared between different sex
Time frame: change from baseline at 36 months
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