Furthermore, other studies suggest that individuals with incomplete CSNB related to the CACNA1F gene often exhibit nystagmus, photophobia, and/or impaired night vision, abnormal color vision, myopia, and generally a normal fundus, except for changes typical of high myopia (optic disc tilt, disc pallor, and stretching of the fundus). Here, CACNA1F is linked to Nystagmus.