Color Vision Deficiency

Color blindness is classified as the inability to see color or perceive color differences under normal lighting conditions. This condition is classified as a mild disability.

Types of Color Vision Deficiency

  • Monochromatism: Achromatopsia
  • Dichromatism: Tritanopia/Tritanomaly, Deuteranopia/Deuteranomaly and Protanopia/Protanomaly
  • Anomalous Trichromatism: Tritanopia/Tritanomaly, Deuteranopia/Deuteranomaly and Protanopia/Protanomaly

Causes of vision deficiency:

  • Eye Conditions; Injury, Glaucoma, Macular Degeneration…etc.
  • Medication Side Effects
  • Genetics or Age

What are the symptoms?

The symptoms of color vision problems vary:

  • You may be able to see some colors but not others. For instance, you may not be able to tell the difference between some reds and greens but can see blue and yellow easily.
  • You may see many colors, so you may not know that you see color differently from others.
  • You may only be able to see a few shades of color, while most people can see thousands of colors.
  • In rare cases, some people see only black, white, and gray

Are there treatments for color deficiency?

Currently, there is no cure for this condition. Coloured filters or contact lenses are available that can be worn in certain circumstances to help increase brightness and make it easier to distinguish colors but many patients find them disorientating and difficult to wear.