International eye/vision care: the United States responsibility.
D003906:Developing Countries; D014943:Global Health; D006205:Haiti; D006296:Health Services; D006801:Humans; D007198:Indians, North American; D007391:International Cooperation; D009549:Nigeria; D009907:Optometry; D012941:Social Responsibility; D014141:Trachoma / Q000517:prevention & control; D014481:United States; D014838:Volunteers