According to WHO 1980 deafness grading standards, the average language frequency pure tone hearing threshold is divided into five.
Mild deaf: close listening to the general conversation without difficulty, audiometry check the pure tone and language hearing threshold at 26 ~ 40dB.
Moderate deafness: it is difficult to listen to the distance, listening threshold 41 ~ 55dB
Medium and severe deafness: close listening loud language difficulties, listening threshold 56 ~ 70dB.100% brand new and high-quality made.Extract ear wax with ease using the smart swab,Removal Swab,Soft, spiraled, and grooved head collects more wax than a regular cotton swab.Simply place cheap smart swab in your ear, twist and remove ear wax…it’s that easy!Typical cotton swabs can go too far… Smart Swabs soft spiral grooved tip is designed to extract wax with a simple twist.
Severe deafness: loudly in the ear can only hear, listen to the threshold 71 ~ 91dB.
Deaf: Do not hear the voice of the ear loudly shouting, pure tone test listening threshold more than 91dB.