The Colour Blind Awareness organisation has been founded to raise awareness of colour blindness colour vision deficiency and aims to be the first point of reference for in the UK for people seeking information on colour blindness. In Britain this means that there are approximately 3 million colour blind people about 4. There are different causes of colour blindness. For the vast majority of people with deficient colour vision the condition is genetic and has been inherited from their mother, although some people become colour blind as a result of other diseases such as diabetes and multiple sclerosis or they acquire the condition over time due to the aging process, medication etc. There are different types of colour blindness and there are extremely rare cases where people are unable to see any colour at all.
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What is colour blindness? Colour (color) blindness (colour vision deficiency, or CVD) affects approximately 1 in 12 men (8%) and 1 in women in the world. People with 'faulty' trichromatic vision will be colour blind to some extent and are all of their three cone types are used to perceive light colours but one type of.
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The Colour Blind Awareness organisation has been founded to raise awareness of colour blindness colour vision deficiency and aims to be the first point of reference for in the UK for people seeking information on colour blindness. There are several types of inherited colour blindness. For information on acquired colour vision defects refer to our page Acquired Colour Vision Defects. Normal colour vision uses all three types of light cones correctly and is known as trichromacy.
Most of us share a common color vision sensory experience. Some people, however, have a color vision deficiency, which means their perception of colors is different from what most of us see. The most severe forms of these deficiencies are referred to as color blindness.