Wearable sound-amplifying devices that are intended to compensate for impaired hearing. These generic devices include air-conduction hearing aids and bone-conduction hearing aids. (UMDNS, 1999)
Ear Molds, Hearing Aid,Aid, Hearing,Aids, Hearing,Hearing Aid
D006311
Hearing Disorders
Conditions that impair the transmission of auditory impulses and information from the level of the ear to the temporal cortices, including the sensorineural pathways.