Eye care visits and use of eyeglasses or contact lenses. United States, 1979 and 1980.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003261:Contact Lenses; D004522:Educational Status; D005139:Eyeglasses; D005260:Female; D006296:Health Services / Q000706:statistics & numerical data*; D006630:Hispanic or Latino; D006801:Humans; D007182:Income; D008297:Male; D008875:Middle Aged; D009790:Occupations; D009885:Ophthalmology; D044469:Racial Groups; D012111:Residence Characteristics; D012737:Sex Factors; D014481:United States