Hearing Loss Overview
The human ear is capable of hearing sound from 0 dBhL (faintest sound perceivable by a normal adult) to about 140 dBhL (the noise of a jet engine within 250 yards). Hearing impairment can be classified as follows:
- Normal (0 to 20 dBhL)
- Mild (cannot hear below 40 dBhL)
- Moderate (cannot hear below 60 dBhL)
- Moderately severe (cannot hear below 75 dBhL)
- Severe (cannot hear below 75 – 90 dBhL)
- Profound (cannot hear 90+ dBhL)
Hearing disability can be congenital (from birth) or acquired (through a loud work environment). It can be managed through mechanical hearing devices or surgical interventions.
While a hearing disability is looked upon as a social stigma, it must be discussed and acted upon. Because, many times, acquired hearing disabilities can get worse with time. As hearing abilities get worse, people start experiencing problems with everyday life, like driving in the traffic, daily communication, etc. This can cause depression, frustration and other emotional problems. Hence, timely intervention in hearing impairment is very important.