Usher Syndrome, Type Iia, also known as usher syndrome type 2a, is related to retinal disease and night blindness. An important gene associated with Usher Syndrome, Type Iia is USH2A (Usherin), and among its related pathways/superpathways are Olfactory Signaling Pathway and Ciliary landscape. Affiliated tissues include retina and eye, and related phenotypes are congenital sensorineural hearing impairment and rod-cone dystrophy