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Wednesday, April 7, 2010 as of 11:14 AM ET

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Color Blindness

Color blindness

Color blindness or color vision deficiency is the inability or decreased ability to see color, or perceive color differences, under normal lighting conditions.

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Symptoms

  • Difficulty distinguishing between blue and green
  • Difficulty distinguishing between yellow and blue
  • Difficulty distinguishing between red and green

Also Known As

  • Colour blindness
  • Color blindness

Associated Medical Specialties

  • Medical genetics
  • Ophthalmology
Color Blindness Often Caused by Genetics

Color blindness is a slightly misleading term because people who are colorblind can still see colors.

However, most people with color blindness have deficiencies distinguishing between red and green or between blue and yellow. Here is a guide to understanding the nature of color blindness:Overview Color blindness is a fairly widespread condition, affecting approximately one in 10 men , according to the U.S. National Library of Medicine. These people have trouble distinguishing between seeing different hues and brightness. The symptoms can be so mild that a person may not even know he or she is color blind. Many people adjust easily to color blindness, and it is usually considered a mild disability. Nonetheless, some important tasks, like driving or learning to read, can be significantly more challenging with color blindness.Types of color blindness There are three categories of color blindness: monochromacy, dichromacy, and anomalous trichromacy. People with monochromacy actually are c...

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