Now, that comes with a slight clarification. Blindness is very rarely total darkness. Wikipedia explains it pretty well:. This means that a legally blind individual would have to stand 20 feet 6. Approximately ten percent of those deemed legally blind, by any measure, have no vision.

Blind teens can be adept at using technology at school and beyond, as Stephen Toth explains. We met while we were trying to distinguish our canes; we couldn't tell them apart. We argued over whose cane was whose and seemed to hate each other from the beginning. We didn't know that we would be together just a few weeks later at the summer camp run by the Louisiana Center for the Blind.

The human eye is like a camera that collects, focuses, and transmits light through a lens to create an image of its surroundings. In a camera, the image is created on film or an image sensor. In the eye, the image is created on the retina , a thin layer of light-sensitive tissue at the back of the eye. Like a camera, the human eye controls the amount of light that enters the eye. The iris the colored circular part of the eye controls the amount of light passing through the pupil.

Teaching Students with Visual Impairments. Learn to Play. The following young adult books center on characters that are blind or visually impaired or are impacted by those with visual impairments.