Someone who is visually impaired has severe difficulty in seeing, even when wearing glasses.

a lot...

There are a limited number of microwaves that will speak out information rather than display it for the visually impaired.

VISUALLY IMPAIRED MEANS HAVING GREATLY REDUCED VISION THAT CANNOT BE FIXED BY GLASSES.

The visually impaired can play many sports. one popular is visually impaired softball. the ball emits a high pitched sound tha the players can use to determine its location