title: An emphasis on prevention: 1908-1978.
mesh_terms: D001766:Blindness / Q000266:history / Q000517:prevention & control*; D049673:History, 20th Century; D006801:Humans; D009885:Ophthalmology / Q000266:history; D014481:United States; D014837:Voluntary Health Agencies / Q000266:history*