Hearing Aids 101

What is a hearing aid? Simply put, it is any devicehearing loss. With this type of loss there generally is
used for aural rehabilitation of partially deaf people.damage to the hair cells or nerve fibers in the inner
Some smaller aids are compact enough to fit in theear which will distort and reduce the perceived
ear or be hidden in the frame of eyeglasses. Hearingloudness of sound. This is usually accompanied with a
aids assist in making soft sounds louder. Beforedifficulty in understanding speech, especially in noisy
choosing and buying a hearing aid it is important tosituations. A person with this type of hearing loss
understand that a hearing aid does not restore yourmay also have trouble telling the difference between
hearing. Hearing aids help make soft sounds louder.consonant sounds (higher frequencies).
In the U.S., more than 1,000 different models ofSome of the causes of sensorineural hearing loss
hearing aids are available. All of them include ainclude birth defects, head injuries, infection, some
microphone (to receive sound), amplifier (to increasemedications, illnesses accompanied by a high fever,
sound strength), a receiver or speaker (to sendexposure to loud noises, or long-term exposure to
sound to the ear), and are powered by a battery.noise. As a general rule, this form of hearing loss
Hearing aids are divided into several different types:cannot be treated medically or surgically. The best
(1) digital, (2) in-the-ear, (3) in-the-canal, (4)method of treatment for individuals with nerve
behind-the-ear and (5) on-the-body. They are eitherdeafness is the use of a hearing aid.
"monaural" (a single hearing aid), or "binaural" (for bothThe fist step in getting a hearing device is to have a
ears); more than 65% of all hearing aid users havehearing evaluation and a medical exam. After
binaural aids.conducting a hearing evaluation, an qualified hearing
There are two primary types of hearing loss. Thespecialist, (audiologist) will be able to decide whether
first is commonly called conductive hearing loss. Thisa hearing aid will help, and which one will do the most
type involves the outer or middle ear sounds maygood. This is especially important because aids can be
seem dull and the loudness of certain sounds may bevery expensive (between $500 and $4,000), and are
affected. This form of hearing loss affects a person'soften not covered by health insurance.
ability to hear lower frequencies, especially vowelThere are no "one size fits all" type of hearing aids.
sounds. The possible causes of conductive hearingEvery hearing loss is individual and different. The type
loss include wax obstructing the ear canal; infection inand style of hearing aid that will be best for you
the middle ear; or a puncture of the eardrum. Thedepends on the nature and level of your hearing loss.
treatment for this type of hearing loss is typicallyYour audiologist or hearing aid dispenser will help you
medical or surgical intervention.decide on the best hearing aid for you, based on
The second and most common type of hearing lossyour level of hearing loss, budget and lifestyle.
is referred to as "nerve deafness" or sensorineural