What is Hearing Assessment?

A hearing test provides an evaluation of the sensitivity of a person’s sense of hearing and is most often performed by an audiologist using an audiometer. An audiometer is used to determine a person’s hearing sensitivity at different frequencies. The test will measure the quietest sound that can be heard several points across the speech range – this hearing test is termed an audiogram. There are other hearing tests as well, e.g., Weber test and Rinne test.

What is Hearing Loss?

Hearing loss refers to the loss of ability to hear sounds and understand speech due to changes in the hearing structures. It is one of the most common conditions affecting children as well as adults and elderly. People with hearing loss may find it difficult to have a conversation with friends and family.

Loud noises can cause temporary or permanent damage to the hair cells inside the cochlea which may lead to hearing loss. The temporary or permanent damage is a result of the type of noise and duration of exposure to the noise. Even moderately loud noise over a period of time can damage the hearing ability.

What are different types of Hearing Loss?

What are different types of Hearing Loss?

There are four types of hearing loss based on site of lesion:
  • Conductive Hearing Loss
This occurs due to obstructions in the outer or middle ear. It is often treated with medicine or surgery.
  • Sensorineural Hearing Loss
This occurs when the hearing nerve and inner ear’s hair cells (IHC, OHC) are damaged. SNHL cannot be corrected medically or surgically. Often treated or helped with the hearing aids or implantable hearing solutions.
  • Mixed Hearing Loss
This is a combination of sensorineural and conductive hearing loss.
  • Auditory Neuropathy Spectrum Disorder
ANSD is a specific and complex type of auditory condition. In this the transmission of sound from the cochlea to the brain is affected. Characterized by fluctuating hearing loss & poor speech understanding.
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