Mutations in CNGA3 are considered the most common cause of ACHM and cone-rod dystrophies (CORDs) in Chinese, in which only cone photoreceptors are usually affected, although CNGA3 mutations have been reported in a patient with CORDs and Leber congenital amaurosis (LCA) [8, 9]. The gene discussed is CNGA3; the disease is Rod-cone dystrophy.