A vision survey of 115 trainable and educable mentally retarded boys.
D000293:Adolescent; D002648:Child; D002986:Clinical Trials as Topic; D005069:Evaluation Studies as Topic; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology* / Q000534:rehabilitation; D008297:Male; D008722:Methods; D012030:Refractive Errors; D014787:Vision Tests; D014792:Visual Acuity