CSNB2A: congenital stationary night blindness type 2A; CORDX3: cone-rod dystrophy X-linked 3; AIED: Åland Island eye disease; ERG: electroretinography; OCT: optical coherence tomography; RPE: retinal pigment epithelium; VF: visual field. This evidence concerns the gene CACNA1F and Aland island eye disease.