Colorblindness

Colorblindness is a defect of vision affecting the ability to distinguish colors. There are many different types of colorblindness. Partial colorblindness is called dichromatism. The most common form is red-green and has a wide range of variability within this group from very mild to very extreme. The second most common form is blue-green, and a red-green deficit is usually associated with this form. The most severe form of colorblindness is achromatopsia (or monochromatism), the inability …

…and the degree of colorblindness. Another test, the Holmgren test, measures the ability to match colors. Colorblindness is a life-long condition. There is no prevention for it because it is an inherited disorder. If you have this disorder, you must learn to cope with it. It can also have a positive side however. People with this can discern details and images that might escape normal sighted people. Most people compensate well for having this disorder.