S.C. Code Regs. 67-1102 - Loss of Hearing
A. The
method for determining hearing impairment is based on the American Academy of
Otolaryngology "Guide for Evaluation of Hearing Handicap", copyright 1979,
which is based upon the American Medical Association's "Guides to the
Evaluation of Permanent Impairment", copyright 1977.
B. The calculation of a hearing handicap is
derived from the pure tone audiogram, obtained with an audiometer calibrated to
ANSI S3.6-1969 standards and as follows.
(1)
The average of the hearing threshold levels at 500 Hz, 1000Hz, 2000Hz, and
3000Hz are calculated for each ear.
(2) The percent impairment for each ear is
calculated by multiplying by 1.5% the amount that the above average hearing
threshold level exceeds 25dB (low fence) up to a maximum of 100%, which is
reached at 92dB (high fence).
(3)
The hearing handicap, a binaural assessment, is calculated by multiplying the
smaller percentage (better ear) by five, adding this figure to the larger
percentage (poorer ear), and dividing the total by six.
Notes
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