What are "hearing aids"?

What are "hearing aids"?

Jason Hamilton (Facial Plastic & Reconstructive Surgeon) gives expert video advice on: What should I do if I suffer a sudden hearing loss?; How does excessive noise affect my hearing?; Which diseases or illnesses can cause hearing impairment? and more...

Hearing aids are devices that help to amplify sound and transmit it to the ear. Usually, hearing aids are composed of a microphone and an amplifier, and they're commonly used by patients who have some form of deafness that was acquired in their life. Most patients who are congenitally deaf use sign language to communicate.