Focus on Prevent Blindness America.
D001766:Blindness / Q000266:history*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D009939:Organizations, Nonprofit / Q000266:history*; D011322:Primary Prevention / Q000266:history*; D014481:United States; D015351:Vision Screening / Q000266:history*