Predicted to enable 3',5'-cyclic-GMP phosphodiesterase activity and cGMP binding activity. Acts upstream of or within positive regulation of G protein-coupled receptor signaling pathway; positive regulation of MAPK cascade; and positive regulation of epidermal growth factor receptor signaling pathway. Predicted to be active in photoreceptor outer segment membrane. Is expressed in retina outer nuclear layer. Orthologous to human PDE6H (phosphodiesterase 6H). [provided by Alliance of Genome Resources, Apr 2022]