Prevalence of myopia: A large-scale population-based study among children and adolescents in weifang, china.

ABSTRACT:

Purpose

This study aimed to determine the prevalence of myopia among school-aged children and adolescents at the whole city level of Weifang, China.

Methods

This study was a large scale school-based cross-sectional study among children and adolescents aged 5-20 years old. Participants were selected by the school-based registration system in 2020. All the subjects underwent spherical equivalent (SE) error with non-cycloplegic autorefraction measurement. Myopia was defined as an SE refraction of ≤-0.75 diopters (D) and graded into low myopia (-0.75 to -3.00 D), moderate myopia (-3.01 to -5.99 D), and high myopia (≤-6.00 D).

Results

A total of 1,059,838 participants were eligible for this survey and 1,013,206 (95.6% participation rate) were selected through data quality

SUBMITTER: Zhang J 

PROVIDER: S-EPMC9358211 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature