choroidal dystrophy, central areolar type 2(redirected from central areolar choroidal dystrophy type 2)
choroidal dystrophy, central areolar type 2A disorder (OMIM:613105) that affects the posterior pole of the eye. Early lesions consist of a non-specific patch of granular hyperpigmentation at the fovea; the characteristic feature of the disease—a sharply-demarcated area of macular atrophy of the pigment epithelium and choriocapillaris—occurs several decades after onset.
Defects of PRPH2, which encodes peripherin 2, cause central areolar choroidal dystrophy type 2.
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