gyrate atrophy of choroid and retina

gyrate atrophy of choroid and retina
an autosomal recessive form of tapetoretinal degeneration, caused by mutations in the OAT gene (locus: 10q26) that result in ornithine aminotransferase deficiency and hyperornithinemia. It is marked by ring-shaped areas of thinning in the periphery of the fundus that enlarge and become confluent, resulting in tunnel vision; night blindness and other disturbances of vision follow.

Medical dictionary. 2011.

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