Prevalence of myopia and high myopia, and the association with education: Shanghai Child and Adolescent Large-scale Eye Study (SCALE): a cross-sectional study.

ABSTRACT:

Objectives

To report on: (a) overall myopia and high myopia prevalence, and (b) the impact of education on the spherical equivalent refractive error in children across Shanghai.

Design

Cross-sectional study.

Setting

Across all 17 districts of Shanghai.

Participants

910 245 children aged 4-14 years from a school-based survey conducted between 2012 and 2013.

Main outcome measures

Data of children with non-cycloplegic autorefraction, visual acuity assessment and questionnaire were analysed (67%, n=6 06 476). Prevalence of myopia (≤-1.0 D) and high myopia (≤-5.0 D) was determined. We used a regression discontinuity design to determine the impact of school entry cut-off date (1 September) by comparing refractive errors at each age, for children born pre-Septe

SUBMITTER: He X 

PROVIDER: S-EPMC8710858 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature