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Word Count: 579
At the very back of your eye is the retina Its about the size of a postage stamp and it contains millions of cells that are sensitive to light Some of these cells are called cones Cones let you see color by combining the three main colors red blue and green to make thousands of colors from the orange of your macaroni and cheese to the turquoise of a tropical fishEven though many people think that being color-blind means a person cant see any color this isnt true Very few color-blind people see life the way it is on an old black-and-white TV show Instead most people who are color-blind just have a hard time telling the difference between certain colorsIf you dont have the correct chemicals in the cones they may not let you see the right number of main colors Most people who are color-blind arent able to see red or green For example when a kid who is color-blind looks at a green leaf he sees a leaf thats either a neutral color like a light tan or a shade of gray color blindness color blindness visual defect resulting in the inability to distinguish colors About 8 of men and 05 of women experience some difficulty in color perception Color blindness is usually an inherited sex-linked characteristic transmitted through but recessive in females Acquired color blindness results from certain degenerative diseases of the eyes Most of those with defective color vision are only partially color-blind to red and green ie they have a limited ability to distinguish reddish and greenish shades Those who are completely color-blind to red and green see both colors as a shade of yellow Completely color-blind individuals can recognize only black white and shades of gray Color blindness is usually not related to visual acuity it is significant therefore only when persons who suffer from it seek employment
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