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Deafness

Current definition

March 2022

Deafness – permanent and irreversible

Permanent and irreversible loss of hearing to the extent that the loss is greater than 70 decibels across all frequencies in the better ear using a pure tone audiogram.

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We've updated the permanent and irreversible loss of hearing to the extent that the loss is greater than 95 decibels to 70 decibels.

 

Previous definitions

November 2015

Deafness – permanent and irreversible

Permanent and irreversible loss of hearing to the extent that the loss is greater than 95 decibels across all frequencies in the better ear using a pure tone audiogram.