Retinitis Pigmentosa 51, also known as rp51, is related to bardet-biedl syndrome 1 and retinitis pigmentosa, and has symptoms including photophobia An important gene associated with Retinitis Pigmentosa 51 is TTC8 (Tetratricopeptide Repeat Domain 8). Affiliated tissues include retina and eye, and related phenotypes are reduced visual acuity and rod-cone dystrophy