健全的聽覺系統能接收低於或等於二十五分貝的聲音。如果需要高於二十五分貝才能接收，便屬於弱聽。弱聽程度分為輕度、中度、中度嚴重、嚴重及深度，並需要通過專業及詳細的聽力檢查測試及驗耳程序以作判斷。
The condition of outer ear canal and tympanic membrane will be examined by using a hand-held otoscope or a video otoscope. The otoscopic exam is performed by gently pulling the auricle upward and backward. A healthy ear canal should be free of earwax and foreign body, while a healthy eardrum should be pinkish gray in color, translucent and intact. A photo of your ear canal and tympanic membrane will be shown after examination. Medical referral will be given if any abnormality such as earwax occlusion and otitis externa is identified.
Pure Tone Audiometry (PTA) is a behavioural test to assess the hearing sensitivity (i.e the softest sound) that a client can perceive in an acoustically controlled environment. The client will wear headphones or insert phones to listen different pure tones from 250Hz to 8k Hz at different loudness level. The client is instructed to respond when a sound stimulus is heard by pressing a response button or raising his/her hand. Air conduction and bone conduction thresholds will be obtained to diagnose the degree and type of hearing loss of client and identify any possible middle ear involvement.
Tympanometry records changes in middle ear immittance with varying air pressure in the ear canal. It is a test used to detect disorders of the middle ear. It involves inserting a probe tip in the ear canal to obtain ear canal volume, pressure and static compliance of the middle ear. Tympanometry may reveal possible middle ear problems, such as middle ear fluid, perforated eardrum, impacted earwax and ossicular disorders.
An acoustic reflex threshold is a middle ear measurement using a constant pressure and various frequency-specific sounds are presented at higher intensity to examine stapedius muscle contraction. Acoustic reflexes thresholds measurement can identify any possible retrocochlear lesion and help crosscheck the pure tone audioemtry and tympanometry result.
Speech audiometry provides information about the clients sensitivity to recorded or live speech materials and understanding of speech at suprathreshold levels. It can be used diagnostically to examine speech-processing abilities of the whole auditory system and identify any possible retrocochlear lesion. It can also be used to crosscheck the validity of pure-tone thresholds.
After an accurate audiological result is obtained via Comprehensive Audiological Assessments, needy clients will be evaluated for the use of hearing aid. Hearing aids with different styles and technological levels are introduced according to the degree of hearing loss, lifestyle, communication needs and dexterity of the client. Comprehensive hearing aid verification will be performed to compare the aided and unaided performance of the client and regular follow-up service is necessary for maximizing the benefit of hearing aid.
聽覺專業人員先了解聽力狀況及查詢病歷
利用耳窺鏡檢查外耳道及耳膜的情況
利用中耳功能分析儀檢查中耳的情況
6.助聽器調教及功能測試
確保助聽器能夠提供足夠的聽力補償和評估佩戴後接收語言的能力
評估弱聽類別和程度
客人可免費試戴助聽器一星期，在不同生活環境下體驗助聽器的使用效果
助聽器試戴後，聽覺專業人員會了解試戴期間的適應情況及相應地調教助聽器，確保客人佩戴得舒適
聽力有機會隨年紀增長而下降，定期調教及跟進服務有助提升助聽器配戴效果
聽覺專業人員先了解聽力狀況及查詢病歷
利用耳窺鏡檢查外耳道及耳膜的情況
利用中耳功能分析儀檢查中耳的情況
評估弱聽類別和程度
6.助聽器調教及功能測試
確保助聽器能夠提供足夠的聽力補償和評估佩戴後接收語言的能力
客人可免費試戴助聽器一星期，在不同生活環境下體驗助聽器的使用效果
助聽器試戴後，聽覺專業人員會了解試戴期間的適應情況及相應地調教助聽器，確保客人佩戴得舒適
聽力有機會隨年紀增長而下降，定期調教及跟進服務有助提升助聽器配戴效果
