Preschool Vision Screening for 3 to 6-Year Old Children in Seoul.

Purpose : To prevent permanent visual disturbance, we performed a mass screening for the detection of ocular disorders of preschool children. Methods : Ocular examination was performed on 33,955 children in Seou(3~6 years of age)l, during the period from January to December, 2000. 435 children were shown to have either visual acuity of less than 0.5 or anisometropia of over 2 lines. Detailed Eye examination. was conducted on those 435 children....