Blindness

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 lens is adjustable to allow viewing of both close and distant objects. The iris, just like the iris in a camera, controls the amount of light that enters the eye. …