Vision testing by parents of 3 and one-half-year-old children.
D000367:Age Factors; D000550:Amblyopia / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D010290:Parents; D011637:Public Health Nursing; D014786:Vision Disorders / Q000175:diagnosis / Q000453:epidemiology; D014787:Vision Tests; D014922:Wisconsin