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Color blindness — or more accurately, poor or deficient color vision — is an inability to see the difference between certain colors. Though many people commonly use the term "color blind" for this condition, true color blindness — in which everything is seen in shades of black and white — is rare.
Color blindness is usually inherited. Men are more likely to be born with color blindness. Most people with color blindness can't distinguish between certain shades of red and gre...
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You may have a color vision deficiency and not know it. Some people figure out that they or their child has the condition when it causes confusion — such as when there are problems differentiating the colors in a traffic light or interpreting color-coded learning materials.
People affected by color blindness may not be able to distinguish:
Seeing colors across the light spectrum is a complex process that begins with your eyes' ability to respond to different wavelengths of light.
Light, which contains all color wavelengths, enters your eye through the cornea and passes through the lens and transparent, jellylike tissue in your eye (vitreous humor) to wavelength-sensitive cells (cones) at the back of your eye in the macular area of the retina. The cones are sensitive to short (blue), medium (green) or long (red) wavelengths of light....
There are no treatments for most types of color vision difficulties, unless the color vision problem is related to the use of certain medicines or eye conditions. Discontinuing the medication causing your vision problem or treating the underlying eye disease may result in better color vision.
Wearing a colored filter over eyeglasses or a colored contact lens may enhance your perception of contrast between the confused colors. But such lenses won't improve your ability to see all colors....
For informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment.
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