Clinical testing of visual function of the young child.
D002648:Child; D002675:Child, Preschool; D006233:Persons with Disabilities / Q000523:psychology; D004193:Discrimination Learning; D005403:Fixation, Ocular; D005556:Form Perception; D006801:Humans; D007223:Infant; D014787:Vision Tests / Q000379:methods*