Vision care delivery systems.
D000328:Adult; D003695:Delivery of Health Care; D005128:Eye Diseases / Q000628:therapy; D005260:Female; D005544:Forecasting; D006801:Humans; D008297:Male; D008499:Medical Records; D008962:Models, Theoretical; D009907:Optometry; D013997:Time Factors; D014481:United States