Hearing impairment

Hearing impairment refers to those who have difficulty in hearing or recognizing sound due to structural defects in the hearing organs due to congenital or acquired causes, or part or all of their functions; their identification criteria are as follows: (1) Accept conscious pure-tone hearing After the examination, the ear frequency of his ears was above 25 dB. (2) If he cannot accept the conscious pure-tone hearing test in the preceding paragraph, he shall be identified after the measurement by his hearing test.