Any central areolar choroidal dystrophy in which the cause of the disease is a mutation in the PRPH2 gene. The disease is MONDO_0013137 (choroidal dystrophy, central areolar 2). Also known as: PRPH2 central areolar choroidal dystrophy, central areolar choroidal dystrophy caused by mutation in PRPH2, choroidal dystrophy, central areolar type 2.