• Entry
  • Reader's guide
  • Entries A-Z
  • Subject index

Blindness

  • By: Geoffrey C. Tabin & Kurt H. Kelley
  • In: Encyclopedia of Global Health
  • Edited by: Yawei Zhang
  • Subject:Public Health (general), Public Health Education & Health Promotion

The World Health Organization (WHO) defines blindness as the inability to read the largest letter on a vision chart at a distance of 10 feet. In 2002, 37 million people worldwide met this definition, with 90 percent living in developing countries. ...

    • Loading...
    locked icon

    Sign in to access this content

    Get a 30 day FREE TRIAL

    • Watch videos from a variety of sources bringing classroom topics to life
    • Read modern, diverse business cases
    • Explore hundreds of books and reference titles