| - - - - - - - - - - - - Back to Top - - - - - - - - - - - - General Colorblindness Information
Colorblindness is a general term for the inability to see colors the way most people see them. Colorblind people have difficulty distinguishing between certain colors, such as red and green or blue and yellow. Photoreceptors called cones allow us to appreciate color. These cones are concentrated in the very center of the retina and contain three photosensitive pigments: red, green and blue. Those with defective color vision have a deficiency or absence in one or more of these pigments. Red-green color deficiency is the most common form; a less common form is blue-yellow color deficiency. Rarely do color-deficient people see only in shades of gray or no color whatsoever.
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Colorblindness is most commonly a genetic condition that affects about 8% of males and 0.4% of females. Inherited colorblindness affects both eyes and does not worsen over time. These color problems are linked to the X chromosome and are almost always passed from a mother to her son. Acquired colorblindness can result from poisoning; cataracts; diabetic retinopathy; retinal or optical nerve disease or damage; use of certain medications or very poor nutrition. Acquired colorblindness may become progressively worse over time and usually affects distinguishing between blues and yellows. Nutritional deficiencies can also lead to color blindness.
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Symptoms of colorblindness include difficulty distinguishing reds and greens (most common); difficulty distinguishing blues and greens (less common); objects appearing as various shades of gray (this occurs with complete colorblindness and is very rare); and reduced vision. Colorblindness may be partial (affecting only some colors) or complete (affecting all colors). Complete colorblindness is very rare. Those who are completely colorblind often have other serious eye problems as well.
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Most cases of color blindness cannot be cured; however, people who have difficulty distinguishing colors or parents who notice this problem in their children should see an eye care practitioner. Diagnosing color-vision deficiency early may prevent learning problems during the school years, since many learning materials rely heavily on color. Some people use special lenses for color blindness, which are filters available in either contact lens or eyeglass lens form.
- - - - - - - - - - - - Back to Top - - - - - - - - - - - - In accordance with FDA regulation, we do not make any therapeutic claims for any Dietary Supplements in accordance with the Dietary Supplement Health and Education Act.
Beneficial Dietary Supplements
DHA is a fatty acid essential for mental and visual function. It is the primary structural fatty acid in the gray matter of the brain and retina of the eye and is important for signal transmission in the brain, eye and nervous system.
Vitamin A is important for strong healthy eyes.
Beta-carotene is a form of pre-vitamin A, which is readily converted to vitamin A in the body.
Zinc deficiency may reduce the activity of retinol dehydrogenase, an enzyme needed to help vitamin A work in the eye.
Magnesium improves eyesight in people with vision problems.
Selenium supports eye health.
B Vitamins and Folic Acid deficiencies can to lead to blindness.
Digestive Enzymes deficiency may impair the absorption of needed minerals such as vitamin A, zinc and copper for retinal health.
Taurine reduces the oxidative damage caused by sunlight to the eyes and stimulates the bodys ability to clean up waste by-products that accumulate in the retina.
Multi-mineral Supplement replenishes mineral balance.
Lutein and Zeaxanthin act as a filter to protect the eye from potentially damaging forms of light.
Bilberry enhances night vision and may slow the progression of eye problems.
REFERENCES: Prescription for Nutritional Healing, 3rd Edition, Phyllis Balch, CNC; James F. Balch, M.D. - - - - - - - - - - - - Back to Top - - - - - - - - - - - -
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