perceptive deafness

He introduced iridectomy for glaucoma, identified retardation of the eyelid in Basedow's disease, and described the combination of retinitis pigmentosa and perceptive deafness in Usher's syndrome.

Known as sensori neural deafness, it may have been called nerve deafness, perceptive deafness, inner ear deafness, presbyacusis - but by any name it is a frustrating type of hearing loss, at present not helped by surgery but undoubtedly helped by using sight together with listening tactics.