Cystinosis, Adult Nonnephropathic, also known as cystinosis, ocular nonnephropathic, is related to cystinosis and cystinosis, nephropathic. An important gene associated with Cystinosis, Adult Nonnephropathic is CTNS (Cystinosin, Lysosomal Cystine Transporter). Affiliated tissues include eye, and related phenotypes are visual impairment and photophobia