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Colour Vision Examination

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A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don’t pass this test, you may have poor color vision, or your doctor may tell you that you’re color blind. However, being truly color blind is a very rare condition in which you’re only able to see shades of gray.

According to Color Blind Awareness, about 1 in 12 men, and 1 in 200 women experience color blindness. The majority of people with color blindness have inherited the condition. Sometimes, problems with color vision are due to a disease affecting your optic nerve, such as glaucoma. Poor color vision can also be the result of an inherited problem with the cones (color-sensitive photoreceptors) in your retina. The retina is the light-sensitive layer at the back of your eye.


source: www.healthline.com

What causes poor color vision?

  • genetics
  • aging
  • certain medications and diseases
  • exposure to chemicals

  • diabetes
  • alcoholism
  • macular degeneration
  • leukemia
  • Alzheimer’s disease
  • Parkinson’s disease
  • sickle cell anemia