The NM_005183.4 variant of the CACNA1F gene, with pathogenic variants c.3847-2A>G and c.3940C>T (p.Arg1314Cys), was first described in 2022 in a case of X-linked cone–rod dystrophy (CORDX), a rare, progressive retinal disease characterized by reduced visual acuity, myopia, abnormal color vision, and cone–rod dystrophy [13]. The gene discussed is CACNA1F; the disease is myopia.