In the United States, a person is legally
blind if his or her best eye has less than 20/200 vision with the help of
glasses or contact lenses. Having 20/200 vision means that a person cannot be
more than 20 ft (6.1 m) away to
see what a person with normal vision can see from
200 ft (60.96 m) away.
Legal blindness does not mean that a person cannot see at all. People who
are legally blind often have some vision, but their field of vision may be very
narrow or blurry. Or they may have blind spots that glasses cannot
Being diagnosed as legally blind restricts a person's
ability to obtain a driver's license. But a legally blind person is
usually eligible for low visibility aids and other benefits to help improve
Adam Husney, MD - Family Medicine & Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology
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