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 Assessments |
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Otoscopic examination: Use
an otoscope to check if the ear drums are intact and ear canals are
free of discharge and foreign objects. |
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Pure Tone Audiometry: A standard hearing
assessment is consisted of two parts. Firstly, hearing is assessed
with headphones placing on both ears. Signals from low to high pitch
are then presented to each ear respectively. Hearing assessment should
be performed by qualified Audiologist in a sound-treated room. Secondly,
a bone vibrator is placed behind the ear to look for the nature of
hearing loss. The bone vibrator transmits the signals to the inner
ear, bypassing the ear canals and the middle ears. For those with
conductive hearing loss, soft signals can be easily detected with
the bone vibrator, whereas for those with sensorineural hearing loss,
signals are heard at similar levels with both devices. |
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Impedance Audiometry: Impedance Audiometry
is consisted of two tests. Firstly, tympanometry is used to assess
the integrity of the eardrum and the pressure level of the middle
ear cavities. Abnormal findings indicated middle ear problem is present,
e.g. middle ear infection and eardrum perforation. Secondly, acoustic
reflex test is conducted to measure slight changes in the eardrum
induced by the two muscles in the middle ear, which contract in response
to loud sounds, for evaluating the integrity of ear bones and retrocochlear
regions. The degree of hearing loss can also be inferred by the findings
of this test. |
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Tinnitus evaluation: To find out the
pitch and loudness level of tinnitus presents objectively. A custom-made
treatment program will be designed for individual patient according
to the case history and tinnitus status. |
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