According to the definition of blindness as it has been determined in Israel and Western Europe, a blind person is someone who is affected by one of the following:

  • Total blindness, "no light perception" (NLP).
  • Visual acuity which is less than 3/60 in the better eye - what a person with normal vision sees at 60 meters, a blind person only sees at 3 meters (and that is with the assistance of eyeglasses). The significance being that such a person is unable to count fingers from a distance of 3 meters even with the best possible eyeglasses)\.
  • Field of vision which is less than 20° in the better eye.