Best vitelliform macular dystrophy (Best disease, BVMD) has autosomal dominant inheritance and is the most common disease associated with mutations in the gene BEST1. Four other disease phenotypes have been described in association with BEST1 mutations: adult onset vitelliform macular dystrophy, autosomal recessive bestrophinopathy, autosomal dominant vitreoretinochoroidopathy and retinitis pigmentosa. The gene discussed is BEST1; the disease is adult-onset foveomacular vitelliform dystrophy.