A hearing aid magnifies sound vibrations entering the ear. Surviving hair cells detect the larger vibrations and convert them into neural signals that are passed along to the brain. The greater the damage to a person’s hair cells, the more severe the hearing loss, and the greater the hearing aid amplification needed to make up the difference. However, there are practical limits to the amount of amplification a hearing aid can provide. In addition, if the inner ear is too damaged, even large vibrations will not be converted into neural signals. In this situation, a hearing aid would be ineffective.These hearing aids are intended to help adults with perceived mild to moderate hearing loss. Prescription hearing aids are available from a hearing health professional who will program them for your degree of hearing loss. Prescription hearing aids or other devices may be necessary for more significant or complicated hearing loss.
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