Prevalence of abnormal vision in one-year-old Thai children, based on a prospective cohort study of Thai children (PCTC).

Objectives: To collect preliminary data on the prevalence of abnormal vision in one-year-old Thai children.

Material And Method: A retrospective study was conducted using data collected from a prospective cohort study of Thai children (PCTC) carried out during 2000-2002, to examine the prevalence of abnormal vision in one-year-olds. Data from five districts in five provinces were examined.