_:vb50943059 . _:vb50943059 . _:vb50943059 . _:vb50943059 "A retinitis pigmentosa that is characterized pigmentary retinal degeneration with onset in the teens leading to blindness in the sixth ans seventh decades of life."^^ . _:vb50943059 "url:https://www.ncbi.nlm.nih.gov/pubmed/3618160"^^ . _:vb50943059 . _:vb50943059 .