Monocular visual acuity of persons 4-74 years, United States, 1971-1972.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D044383:Black People; D002648:Child; D002675:Child, Preschool; D004522:Educational Status; D005260:Female; D006306:Health Surveys; D006801:Humans; D007182:Income; D008297:Male; D008875:Middle Aged; D012107:Research Design; D012737:Sex Factors; D013223:Statistics as Topic; D014481:United States; D014787:Vision Tests; D014792:Visual Acuity; D001741:Black or African American