November 23, 2015 7:15am
Achromatopsia is an inherited retinal disease, which is present from birth and is characterized by the lack of cone photoreceptor function. The condition results in markedly reduced visual acuity, extreme light sensitivity causing day blindness, and complete loss of color discrimination. Best-corrected visual acuity in persons affected by achromatopsia, even under subdued light conditions, is usually about 20/200, a level at which people are considered legally blind. The incidence rate for achromatopsia is approximately one in 30,000 people, and it is estimated that there are approximately 10,000 people in the US and 17,000 people in the EU with achromatopsia.
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