You don’t have to be totally blind to see losing your vision affects more than the eyes.

According to the National Institutes of Health (NIH), in the United State alone:

More than 20.4 million adults suffer from cataracts 1.7 million suffer from advanced Age-related Macular Degeneration (AMG) 7.3 million suffer from intermediate AMG 2.2 million suffer from glaucoma

Don’t forget about the more than 4 million other adult Americans who suffer from some degree of blindness due to …