| An X-linked recessive retinal disease with characteristics of fundus hypopigmentation, decreased visual acuity, nystagmus, astigmatism, progressive axial myopia, defective dark adaptation and protanopia. A very rare disease originally reported in a family from Aland Island in the Bothnia Sea. Caused by mutations in the CACNA1F gene. Some mutations in CACNAF1 are associated with CSNB2 suggesting allelism of the two disorders. |
