According to the Human Gene Mutation Database (Stenson et al., 2014), there are over 190 mutations in the peripherin-2 gene, PRPH2, that cause a heterogeneous set of retinal dystrophies, including retinitis pigmentosa, pattern dystrophy and macular dystrophy (Boon et al., 2008). This evidence concerns the gene PRPH2 and retinitis pigmentosa.