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A member asked:
What diopter is legally blind?
2 doctors weighed in across 2 answers
Not related: A common definition for legal blindness would be a vision of 20/200 or worse in the best eye with correct glasses or contacts and/or a visual field of 20 degrees or less in the best eye. Diopters are related to the glasses or contact lens prescription which is not related to legal blindness. A common misconception is that the power of glasses has anything to do with legal blindness. It doesn't.
Answered 12/12/2013
4.7k views
See below. : A person is considered to be legally blind if he or she has a best corrected vision of 20/200 in their best seeing eye. If an individual has a visual field of 20 degrees or (tunnel vision) they may also be considered legally blind.
Answered 10/4/2018
3.9k views
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