Usher syndrome, a rare inherited genetic disease, is a leading cause of combined deafness and blindness with type 2A (USH2A) being the most common form. USH2A, caused by mutations in the USH2A gene, can include hearing loss from birth and progressive
/PRNewswire/ The Foundation Fighting Blindness, the world s leading organization committed to finding treatments and cures for blinding retinal diseases, in.