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Color Blindness Many people refer to problems with ones ability to see color as color blindness however unless a person cant see any color at all color vision problems should be called by another term Common terms are abnormal color vision color deficiency and color vision confusion Females maybe be effected by color blindness but usually they are just carriers Males are more often affected About 8 of males and 05 of females are effected by color blindness Although color blindness may be a result of another eye disorder the majority of color blind cases are hereditary and present at birth The retina is a complex nerve system which converts light energy into electrical energy that is then transmitted to the brain This conversion is accomplished by two types of receptor cells in the retina called rods and cones do to their shape The cones are responsible for converting the color Each cone contains visual pigments that are sensitive to one of three wavelengths of light red green and blue Normally all colors of the spectrum are able to be matched by mixtures of only three color sensitivities Therefore the huge variety of colors we see are a response to different compositions of wavelengths of light The rods are responsible for encoding white and black Color blindness results when one or more of the cone cells fail to function properly One of the visual pigments may be functioning abnormally or be absent altogether There are several different types of color blindness however complete color blindness or achromatopsia is probably the simplest to understand This is the rarest form of color blindness This is when no colors can be seen at all The color receptors are almost completely gone in this form however the white and black receptors remain intact However this condition is often misdiagnosed without proper testing There are three basic types of color blindness deuteranopia protanopia and tritanopia Deuteranopia is a condition in
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