(1) Unless the Authority, a self-insurer, a Medical Panel, the Magistrates' Court or the County Court (as the case requires) determines otherwise, when the assessment of the degree of impairment from industrial deafness is made under this Act, the impairment from industrial deafness is deemed to have occurred at a constant rate within the total number of years of exposure to industrial noise in employment.
(2) Unless the Authority, a self-insurer, a Medical Panel, the Magistrates' Court or the County Court (as the case requires) determines otherwise, industrial deafness is deemed to have occurred at a constant rate within the total number of years of exposure to industrial noise in employment.