-.The industrial revolution has modernised the companies with machines
before kept only by man. In recent times, noise pollution is one of the most
permeative problems in the occupational environment which affects workers in
various professions. The aim of this study was to detect the degree of hearing
impairment in the exposed mill employees and compare it with the non-exposed
subjects. 53 workers in the age group of 15-40 years from a spinning mill were
included in the study. Healthy individuals in the same age group who were not
exposed to noisy workplaces were taken as controls. Pure tone audiometry was
performed in both cases and controls in the sound proof audiometry room. The
results observed was high prevalence of noise induced hearing loss of about
81%. Majority of them had minimal sensorineural hearing loss since their
duration of exposure is between 3 – 5 years. A dip at 4 kHz frequency which is
characteristic of noise induced hearing loss was observed in 54.71% of the
workers. The study implies the need of awareness about health hazards due to
excessive noise levels. Hearing conservation programmes in industry must give
attention to many factors which include identification of hazardous noise by
sound pressure means, usage of protective devices, engineering improvements to
reduce noise production and administrative measures to regulate the exposure of
personnel. - See more at: .
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