what is best dissese?!

Question: What is best dissese?

Best's disease, also known as Best's vitelliform macular dystrophy, is an hereditary form of progressive macular dystrophy. It is an autosomal dominant disorder, which means that Best's is most likely to occur in families with a history of the condition.
The macula is an area of about 1mm in diameter in the centre of the retina, where there is a concentration of cone cells which are responsible for central and colour vision. The highest concentration of cones is at the centre of the macula at an area called the fovea. Therefore, Best's disease threatens central vision.
The condition can be identified between 3 and 15 years of age.

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