What Is Achromatopsia Congenital achromatopsia is a rare hereditary vision disorder which affects 1 person in 33, 000 in the U. S. The incidence varies in different parts of the world. Persons who have achromatopsia do not have normal cone vision. In normal eyes there are 6 million cone photoreceptors, located mostly at the center of the retina. Persons with complete achromatopsia must rely on ...

The Achromatopsia Group Welcome to the recently formed consolidated internet resource center, support group, and discussion forum for individuals, families, & friends of people affected by the rare vision disorder achromatopsia, also called rod monochromacy, which affects approximately 8, 500 persons in the United States (about 1 in 33, 000). Typical symptoms of achromatopsia include photophobia ...

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