Eye care: 1987.
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D003695:Delivery of Health Care / Q000191:economics / Q000458:organization & administration / Q000639:trends; D005128:Eye Diseases / Q000453:epidemiology / Q000628:therapy; D005131:Eye Injuries / Q000628:therapy; D006293:Health Promotion; D006801:Humans; D008875:Middle Aged; D009885:Ophthalmology; D009907:Optometry; D012030:Refractive Errors / Q000628:therapy; D014481:United States; D014786:Vision Disorders / Q000453:epidemiology