BEST1 and Best vitelliform macular dystrophy: Mutations of the BEST1 gene can manifest as at least five different variants: (1) Best’s disease (Best vitelliform macular dystrophy; BVMD); (2) autosomal recessive bestrophinopathy (ARB); (3) Adult-Onset Vitelliform Macular Dystrophy (AOVMD); (4) autosomal dominant vitreoretinochoriodopathy (ADVIRD); (5) retinitis pigmentosa (RP).