Visual acuity of a national sample (1958 Cohort) at 7 years.
D000367:Age Factors; D002648:Child; D005139:Eyeglasses; D005260:Female; D006801:Humans; D008297:Male; D013285:Strabismus / Q000453:epidemiology; D006113:United Kingdom; D014786:Vision Disorders / Q000453:epidemiology* / Q000628:therapy; D014787:Vision Tests; D014792:Visual Acuity