Retinitis Pigmentosa 40, also known as rp40, is related to night blindness, congenital stationary, autosomal dominant 2 and macular dystrophy, dominant cystoid. An important gene associated with Retinitis Pigmentosa 40 is PDE6B (Phosphodiesterase 6B), and among its related pathways/superpathways is Digestion and absorption. Affiliated tissues include retina and eye, and related phenotypes are cataract and nyctalopia