Hearing Aid Trial & Fitting
HEARING AID TRIAL
It is a scientific procedure by which a hearing aid is selected for a hearing impaired person, using an eclectic method comprising both subjective and objective procedures. A hearing aid is a medical device, and selecting the appropriate device for the person depends on different criteria such as degree and nature of hearing loss.
Hearing Aid Testing
PURE TONE AUDIOMETRY
Pure tone audiometry (PTA) is the key hearing test used to identify hearing threshold levels of an individual, enabling determination of the degree, type and configuration of a hearing loss. The measurements involving the peripheral and central auditory systems thus provide the basis for diagnosis and management.
Tympanometry is an objective test of middle-ear function. It is not a hearing test, but rather a measure of energy transmission through the middle ear. The test should not be used to assess the sensitivity of hearing and the results of this test should always be viewed in conjunction with pure tone audiometry.