KCNJ13 and snowflake vitreoretinal degeneration: Previously, abnormal deposits have been noted on retinal examinations of KCNJ13 patients; crystalline deposits in the retina and fibrillar degeneration of the vitreous are characteristic in patients with SVD (Lee et al., 2003), and hyper-reflective formations in the retina were described in an LCA patient, which were thought to be pigment deposits (Perez-Roustit et al., 2017).