Involved in vision. Interacts with RHO/rhodopsin; the interaction promotes PRCD stability. Localizes to photoreceptor disk membranes in the photoreceptor outer segment. Expressed in retina, where it localizes to both rod and cone photoreceptors (at protein level). Palmitoylated at Cys-2 (PubMed:27509380). Palmitoylation is essential for protein stability and trafficking to the photoreceptor outer segment, but does not appear to be essential for membrane localization (PubMed:27509380). Probably palmitoylated by ZDHHC3 (By similarity). Phosphorylated. Belongs to the PRCD family.