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The impairment you are referring to is commonly known as Achromatopsia, or the inability to see colour, only black and white.
There are several causes of the inability:
- One explanation is said to occur during foetal development within the Retinal Phototransduction Pathway. This results in the inability for the cones within our eyes to respond correctly. The cones are the parts of our eyes which respond to colour, therefore if they do not respond, only rods which respond to light and dark will be responding. This also links to reduced visibility in people with Achromatopsia as their sight is based primarily on light levels.
- Another explanation is based on damage to certain brain areas such as: the diencephalon, the cerebral cortex, the thalamus and areas within the brain stem. It can also be linked to tumors within the brain. This explanation relies more on damage to the brain rather than the actual cells within the eyes.
There is no treatment currently available to fully treat Achromatopsia.
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∙ 14y ago
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