Color Blindness Essay examples -- essays research papers fc

Color Blindless     Color blindness is the inability to distinguish particular chromas. Itis generally an inherited trait, but can core from a chemical imbalance or eyeinjury.     There are three primary colors. They are red, blue, and yellow. Allother colors are the results of diametric combinations of primary colors.Special visual cells, called c anes, are respon-sible for our ability to seecolor. plenty with normal vision have three different types of cones, eachresponsible for a different primary color.     The absence of particular cones causes the absence of particular colors.This can be one cause of color blindness. There are four types of colorblindness. The rarest forms are mono-chromatism and a-typical monochromatism.People with monochromatic vision, or total color blindness, has no cones at all.As a result, they have no ability to see colors, and no hue discrimi-nationwhatsoever. Monochromatic vision is very similar to watching a black and whitetelevision program.     Somebody with a-typical monochromatic vision has just one type of cone,and can see just one color, and various shades of that color. This form is evenrarer than the "typical" monochro-matism.     Another, more common, form of color blindness is called dichromatism.People with di-chromatic vision tend to confuse red, green, and gray, but caneasil...