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Results 1 - 10 of 1,987 for Colours
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  1. Color Blindness (National Library of Medicine)  
    Most of us see our world in color. We enjoy looking at a lush green lawn or a red rose in full bloom. If you have a color vision defect, you may see these colors differently ...
  2. A person’s eye color results from pigmentation of a structure called the iris, which surrounds the small black hole in the center of the ... how much light can enter the eye. The color of the iris ranges on a continuum from ...
  3. Hair color is determined by the amount of a pigment called melanin in hair. An abundance of one type ... The type and amount of melanin determines hair color Hair color Type and amount of melanin Black ...
  4. Color vision deficiency (sometimes called color blindness) represents a group of conditions that affect the perception of color. Red-green color vision defects ...
  5. A color vision test checks your ability to distinguish between different colors. ... test to you. There are several tests for color vision. During the most common, you will be ...
  6. Color blindness is the inability to see some colors in the usual way. ... Color blindness occurs when there is a problem with the pigments in certain nerve cells of the ...
  7. Fingers or toes may change color when they are exposed to cold temperatures or stress, or when there is a problem with their blood supply.
  8. Ask a Scientist: What Is Color Blindness? Video From the National Institutes of Health (National Eye Institute)  
    ... April 30, 2013. Ask a Scientist: What Is Color Blindness? Skip video Switch to video with audio ... it can be treated, and how people become color blind. Created on April 30, 2013. Ask a ...
  9. Abnormal tooth color is any color other than white to yellowish-white. ... cause teeth to become discolored. The change in color may affect the entire tooth, or it may ...
  10. Patchy skin color is areas where the skin color is irregular with lighter or darker areas. Mottling or mottled skin refers ... in the skin cells that gives skin its color Growth of bacteria or other organisms on the ...
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