Eyes are organs that detect light, and send signals along the optic nerve to the visual and other areas of the brain. Our eyes are very essential part of our being without it we can't distinguish the color red to yellow, can't glimpse the amazing creation of God and a lot more. Unfortunately, there are some people who were born blind, some has eye disease. However, a group of researchers whose goal is to create a sensitive devices that can be implanted in the eye and will let blind people recognize faces and read large print. A test was done way back in 2002 on six patients. With these devices blind people were able to read foot-high letters, tell a plate from a cup, find doors and windows, and navigate around large objects.
Argus One is the the first-generation eye implant, consisted of a tiny camera mounted on a pair of dark glasses and a hip-mounted microprocessor. The artificial gadget relayed images to a silicon chip containing an array of 16 electrodes conductors of electrical signals that was surgically attached to the front of the retina. The electrodes created a 4 by 4 pattern of light and dark spots in the visual processing center at the back of the brain.
The patients saw only scattered bits a light. However, they learned to make out straight lines, distinguish light areas from dark ones . It is necessary to train them because the brain loses its ability to interpret sight after long disuse.
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