Puretone Audiometry

Puretone Audiometry

Puretone Audiometry is a widely used test to assess hearing sensitivity at various frequencies (pitches). It helps determine the quietest sound a person can hear and identifies whether there is hearing loss, as well as its type (conductive, sensorineural, or mixed).

How the Test Works:

• Air Conduction Testing: Sounds are delivered through headphones, and the patient responds when they hear a tone. The test helps evaluate the outer and middle ear’s ability to transmit sound.
• Sound-Field Testing: In some cases (such as with children or when headphones are not feasible), sounds are presented through speakers in a soundproof booth. This test checks overall hearing but doesn’t determine which ear may be affected if hearing loss is only in one ear.

What It Diagnoses:

• Hearing Loss: The test can differentiate between conductive hearing loss (problems in the outer or middle ear) and sensorineural hearing loss (damage to the inner ear or auditory nerve).
• Hearing Thresholds: It identifies the softest sounds a person can hear at different frequencies, which are then plotted on an audiogram. This graph helps in determining the severity and type of hearing loss.

Uses:

• To detect hearing loss in routine checkups.
• For diagnosing hearing loss in children, adults, or older adults.
• To monitor hearing changes over time, particularly in those with noise exposure, ear infections, or other conditions.

Puretone audiometry is a key diagnostic tool for evaluating hearing function, helping healthcare providers determine the best course of treatment.