The function of GUCY2F (guanylate cyclase 2F, retinal, ENSG00000101890) is as follows. Responsible for the synthesis of cyclic GMP (cGMP) in rods and cones of photoreceptors (PubMed:7777544). Plays an essential role in phototransduction, by mediating cGMP replenishment (By similarity). May also participate in the trafficking of membrane-associated proteins to the photoreceptor outer segment membrane (By similarity). .