Prevalence of Amblyopia and Strabismus in a Population of 7th-Grade Junior High School Students in Central China: The Anyang Childhood Eye Study (ACES)

To determine the prevalence of amblyopia and strabismus in 7th-grade junior high school students in central China.Using stratified cluster sampling, 2363 7th-grade students were recruited from four junior high schools in Anyang city into the cross-sectional Anyang Childhood Eye Study (ACES). All students underwent visual acuity (VA), cycloplegic autorefraction, cover test, and ocular movement examinations. Uncorrected VA and best-corrected VA...