Usher Syndrome, Type Iid, also known as usher syndrome type 2d, is related to deafness, autosomal recessive 31 and retinal degeneration. An important gene associated with Usher Syndrome, Type Iid is WHRN (Whirlin), and among its related pathways/superpathways are Olfactory Signaling Pathway and Sensory processing of sound. Affiliated tissues include retina and eye, and related phenotypes are hearing impairment and nyctalopia