Health & Life HL203, Инструкция по эксплуатации

Страница: 4 / 26

4
About Hearing Aid
■
What is Hearing Loss?
The hearing loss should be defined in one ear or both ear which
ranges from moderate to severe. Grades of hearing impairment as
shown in below chart:
Grade of impairment
Corresponding
audiometric ISO value
Performance Recommendations
0 - No impairment
25 dB or better
(better ear)
No or very slight
hearing problems. Able
to hear whispers.
1 - Slight impairment
26-40 dB
(better ear)
Able to hear and repeat
words
spoken in
normal voice at 1
metre.
Counselling. Hearing
aids may be needed.
2 - Moderate
impairment
41-60 dB
(better ear)
Able to hear and repeat
words spoken in raised
voice at 1 metre.
Hearing aids usually
recommended.
3 - Severe impairment
61-80 dB
(better ear)
Able to hear some
words when shouted
into better ear.
Hearing aids needed. If
no
hearing aids
available, lip-reading
and signing should be
taught.
4 - Profound
impairment including
deafness
81 dB or greater
(better ear)
Unable to hear and
understand even a
shouted voice.
Hearing aids may help
understanding words.
Additional
rehabilitation needed.
Lip-reading
and
sometimes signing
essential.
Grades 2, 3 and 4 are classified as disabling hearing impairment.
The audiometric ISO values are averages of values at 500, 1000, 2000, 4000 Hz
Intended Use
HL203 is a hearing aid consists of main unit and earphone. The
earphone of HL203 uses air conduction system to receive sounds to
your auricle then into ear canal so user can adapt easily to the sound
of your hearing aid. This device is recommended for use by adults
aged 18 years and older with the hearing detriment user.