Did you see blind people? I think you did. Did you think how they live? Do you know what problems they have? While I made this investigation I understood much more about blindness. This is a result of my investigation. What causes blindness? The eye and a camera have a lot in common. They both have compound lenses. The cornea and the lens are in charge of focusing light as it enters the eye. The …showed first 75 words of 3190 total…

…showed last 75 words of 3190 total…wesupply/fctsheet/braille.htm> "Question From Kids About Blindness", December 18, 2001. <http://www.nfb.org/kids.htm> "Louis Braille. Creator of the Braille System", 2000. <http://www.braillerman.com/louis.html> <Tab/>"Louis Braille", 2000. <http://www.nyise.org/braille.htm> "Groiller Online search engine", 2001. <http://go.grolier.com> Davidson, Margaret. "Helen Keller." Toronto: SCHOLASTIC INC, 1969.