title: Vision testing of young and retarded children.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D006801:Humans; D007223:Infant; D008607:Intellectual Disability; D008722:Methods; D014787:Vision Tests