Color Blindness Essay examples -- Abnormal Color Vision Color Deficien

Color BlindnessMany people refer to problems with wizards ability to see pretext as color blindness, however, unless a mortal cant see any color at all, color vision problems should be called by some other term. Common terms ar affected 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 0.5% 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 opthalmic pigments that are sensitive to one of three wavel engths 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 wavelengthsof 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....