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Disabilities, Opportunities, Internetworking, and Technology

Did You Know?

Not all people who are "blind" are totally blind.

Perfect vision is measured as 20/20. A person is considered visually impaired if she can see no better than 20/70 with correction or in her better eye. If a person's vision is no better than 20/200, he is considered legally blind. A person is also legally blind if his central vision is no greater than 12 degrees (i.e., he has limited peripheral vision and appears to be seeing things as if looking through a tube or straw). People who are referred to as "totally blind" or "black blind" have no usable vision.