Prevalence of amblyopia and strabismus in Eastern China: results from screening of preschool children aged 36–72 months

To determine the prevalence of amblyopia and strabismus in preschool children in Eastern China.The Nanjing Pediatric Vision Project was a cross-sectional, population-based cohort study conducted in preschool children aged 36-72 months from 2011 to 2012 in Yuhua District, Nanjing, China, using an age-stratified random sampling procedure. A questionnaire totalling 117 items was sent to be completed by the corresponding parents or legal guardians...