What is Colour Vision Deficiency?
Colour vision deficiency is a condition in which certain colors and shades cannot be distinguished. Colour vision deficiency is more common in males than females. There are two different types of red-green color deficiencies, far more common, and one blue-yellow colour deficiency. In extreme cases no colours can be detected and a person sees everything in shades of black, grey and white.
How is Colour Vision Deficiency Diagnosed?
The test for colour vision deficiency is relatively easy. A series of coloured designs are shown that a person with normal colour vision would then see figures in the designs. Someone with colour deficiency would not be able to distinguish those figures. Without an eye exam, many people who are colour vision deficient are unaware, and assume that everyone sees what they do.
How is Colour Vision Deficiency Treated?
At this time there is no cure for color deficiency nor is it usually the cause of any significant disability. Someone with colour vision deficiency can often adapt and learn to distinguish colours by brightness and location.