![]() But some coping strategies may help you function better in a color-oriented world. Meanwhile, there is no cure for color blindness. While these findings in animals look promising, gene therapy would not be considered for humans until treatments are proven to be safe. Gene therapy has cured color blindness in monkeys, according to researchers at the University of Washington. SEE RELATED: Tetrachromacy How Do You Treat Color Blindness? An injury or damage to areas of the brain where vision processing takes place also can cause color vision deficiencies. Color blindness can be one symptom of this condition.Ĭolor blindness also can occur when aging processes damage retinal cells. ![]() This inherited condition involves failure of the pituitary gland, which can lead to incomplete or unusual gender-related development such as of sexual organs. Red-green color vision defects primarily are noted with this condition. This type of inherited optic neuropathy can affect even carriers who don't have other symptoms but do have a degree of color blindness. Leber's hereditary optic neuropathy (LHON). For example, an anti-seizure drug called tiagabine has been shown to reduce color vision in about 41 percent of those taking the drug, although effects do not appear to be permanent. Fortunately, cataract surgery can restore bright color vision when the cloudy natural lens is removed and replaced with an artificial intraocular lens.Ĭertain medications. Clouding of the eye's natural lens that occurs with cataracts can "wash out" color vision, making it much less bright. Because Parkinson's disease is a neurological disorder, light-sensitive nerve cells in the retina where vision processing occurs may be damaged and cannot function properly.Ĭataracts. Inherited forms of color blindness often are related to deficiencies in certain types of cones or outright absence of these cones.īesides differences in genetic makeup, other causes of color vision defects or loss include: The center of the macula is called the fovea, and this tiny (0.3 mm diameter) area contains the highest concentration of cones in the retina and is responsible for our most acute color vision. The 6 to 7 million cones in the human retina are responsible for color vision, and these photoreceptors are concentrated in the central zone of the retina called the macula. Rods are more plentiful (there are approximately 100 million rods in the human retina) and they are more sensitive to light, but rods are incapable of perceiving color. Photoreceptors in the retina are called rods and cones. SEE ALSO: Tritanopia: Blue-Yellow Color Blindness What Causes Color Blindness?Ĭolor blindness occurs when light-sensitive cells in the retina fail to respond appropriately to variations in wavelengths of light that enable people to see an array of colors. Sudden or gradual loss of color vision can indicate any number of underlying health problems, such as cataracts.Ĭolor blindness testing can help determine the kind of color deficiency you have. If you develop color vision problems when normally you have been able to see a full range of color, then you definitely should visit your doctor. Most people who are considered "color blind" can see colors, but certain colors appear washed out and are easily confused with other colors, depending on the type of color vision deficiency they have. If so, these are primary signs that you have a color vision deficiency.Ĭontrary to popular belief, it is rare for a color blind person to see only in shades of gray. What are the signs and symptoms of color blindness?ĭo you have difficulty telling if colors are blue and yellow, or red and green? Do other people sometimes inform you that the color you think you are seeing is wrong? This blue-yellow color deficiency usually affects men and women equally. Much more rarely, a person may inherit a trait that reduces the ability to see blue and yellow hues. ![]() ![]() Red-green color deficiency is the most common form of color blindness. According to Prevent Blindness, an estimated 8 percent of males and less than 1 percent of females have color vision problems. If you are colorblind, you have difficulty distinguishing certain colors, such as blue and yellow or red and green.Ĭolor blindness (or, more accurately, color vision deficiency) is an inherited condition that affects males more frequently than females. Color blindness is not a form of blindness at all, but a deficiency in the way you see color.
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