CNGA1 and Chorioretinal atrophy: The ARRP family, in the present study, carried compound heterozygous CNGA1 mutation c.265delC and c.1537G>A, which resulted in a phenotype of classical RP including night blindness, peripheral visual field loss, attenuated vessels, peripheral bone spicule pigmentation, waxy pallor of the optic disc and peripheral chorioretinal atrophy.