AIPL1 and inherited retinal dystrophy: The mechanisms underlying the pathology that eventually leads to retinal dystrophy can generally be divided into several categories: related to phototransduction (GUCY2D, AIPL1, KCNJ13, CABP4), retinoid visual cycle (RPE65, RDH12, LRAT), photoreceptor ciliary transport (SPATA7, LCA5, RPGRIP1, CEP290, TULP1, CLUAP1, IQCB1, IFT140, ALMS1), photoreceptor morphogenesis (CRX, CRB1, GDF6, PRPH2), coenzyme NAD biosynthesis (NMNAT1), guanine synthesis (IMPDH1), protein trafficking (RD3), and photoreceptor differentiation (OTX2) [5,7].