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Color blindness, in reality a color vision deficiency, The inability to perceive colors in a normal fashion, affects your ability to distinguish certain colors, such as red and green or blue and yellow.
Several color vision tests are available through your physician or eye specialist (ophthalmologist). Testing for colorblindness is commonly performed along with other vision screenings. Take your Color Blindness Test's now
Light- and color-sensitive cells in the retina don't respond as they should to color with a color vision deficiency. This disorder affects men more than women, because it is caused by a common X-linked recessive gene. Men inherit the color deficiency gene from a color-deficient mother or a mother with normal color vision who carries the gene. Color-deficient fathers never pass the gene directly to their children, although daughters are always carriers of the color-deficient gene.
Red-green color deficiency is the most common form of color vision deficiency. People diagnosed with this deficiency have a hard time determining if colors are red or green. A less common form is blue-yellow color deficiency. Very rarely do color deficient people see only in shades of gray without any color, like a black-and-white photograph. See your eyecare practitioner if you notice difficulty distinguishing these colors. Take your Color Blindness Test's now
Color vision deficiency cannot be cured, and normal color cannot be restored to color deficients. Those diagnosed with the disorder can learn how to work around an inability to discern certain colors, such as arranging clothes in an organized way, or remembering order rather than color, such as the red light sits in the top position on a traffic light. Diagnosing color vision deficiency in early childhood may prevent learning problems during the school years, as many learning materials rely heavily on color. A new spectacle lens recently received FDA approval to help color-vision deficient people see better. ColorMax Technologies' Color Vision Enhancement Lenses alter light waves as they enter the eye to improve color distinction. Four different lenses coated with color filters are available to assist with different color vision deficiencies. Although color-deficient people may distinguish colors more easily with these new lenses, they still won't be able to see shades of color in the same way as non-color deficient people. For more information of Color Blindness and its treatment:
Source(s): All above information & images are based on an article written by Gretchyn Bailey allaboutvision.com and various other sources. All rights reserved by respective owners. For our full credit and copyright information please view our Credit List.
Disclaimer: Any information displayed here is just for educational purposes, and may not be taken as an expert advice and should not be applied in life without consulting your eye doctor/specialist. We here by take no responsiblity of the accuracy of the above content as they have been taken from various sources. |
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About 200 children are diagnosed with retinoblastoma (eye cancer) each year in the United States. This cancer affects about one out of every 20,000 children, accounting for 3.1% of all childhood cancers. Most children with retinoblastoma are under four years of age. About 75% of children with retinoblastoma have a tumor in one eye. In about 25% of cases, both eyes are affected. [submit fact]
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