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- Of the 236 million
people in this country over the age of 3, about 20 million have some degree
of hearing loss.
- Nearly 5 million cannot
hear normal speech.
- Harmful workplace noise
is a leading cause of hearing loss.
- Communication disorders-including
disorders of speech and language, as well as, of hearing-carry an estimated
$30 billion a year price tag in special education costs, medical costs,
and lost productivity.
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Helen Keller felt her
hearing loss was more devastating then her blindness because it isolated her
from people rather than from things. |
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For
the very young, hearing impairment and deafness can interfere with one of the
major tasks for which the child's brain is primed; learning language. We know
that language is more easily learned before the age of five than later; that
children who are deaf have a harder time learning a spoken language; and that
language acquisition is necessary for most other learning. |
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- We can now identify
hearing impairments at birth.
- We can distinguish
between hair cell and nerve deafness (and therefore fit appropriate hearing
aids).
- Some of today's hearing
aids are normally able to compensate for outer hair cell loss.
- We can identify the
genetic basis of some hearing impairments.
- Today's cochlear prosthesis,
or implant-an electronic substitute for damaged or lost hair cells is more
sophisticated than earlier versions and is now approved for both children
and adults for whom hearing aids are useless.
So much more is known
now than even a decade ago that there are those who realistically hope, through
continued research, to find a "cure" for one or more forms of deafness.
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