The Prevalence of Amblyopia and Strabismus among Schoolchildren in Northeastern Iran, 2011

Purpose: To determine the prevalence of amblyopia and strabismus in the schoolchildren of the city of Bojnourd, Iran Methods: In 2010, randomized stratified cluster sampling was employed in a cross-sectional study on primary and junior high schoolchildren. All the examinations were performed in schools. All students received refraction, vision and subjective refraction tests. The cover test was used to determine tropia. Amblyopia was defined as...