What is colour blindness? Colour blindness also termed as colour vision deficiency is an eye disorder that is referred to as the inability to perceive certain colours. Most colour blind individuals are unable to distinguish between red and green or blue and yellow. Colour blindness is mainly inherited and it ranges from a persons inability to view different shades of one colour to the inability of not viewing various colours at all. Colour blindness involves the three eye cone cells found in the macula and their function is to sense red, green or blue light. Colour blindness develops when one of these cones is not functioning normally.

What is colour blindness and what causes it? Colour blindness is an eye disease caused by various factors including inheritance. It can also be caused by certain vision conditions such as glaucoma, diabetic retinopathy, macular degeneration and cataract. It can also develop after an eye injury or aging since the lens darkens with age. Colour blindness that results due to the above factors is termed as acquired colour blindness.

Individuals with colour blindness present with the following signs, inability to distinguish red, green, blue or yellow. Children with this condition will be unable to learn and perceive various colours. Such people should visit an eye doctor for an eye examination in order to determine whether they have the disease. Diagnosing colour blindness involves various tests such as the Ishihara plates colour blindness test, Farnsworth dichotomous test, arrangement test and the multiple choice colour vision tests.

What is colour blindness and how is it treated? Colour blindness is an eye problem that is known to have no cure. The colour correction system is among the various forms of treatment invented and it has helped many colour blind people to improve their colour perception ability. Eye doctors mainly prescribe colour corrective lenses which depend on the conditions severity.

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