The innocuously progressive loss of hearing as encountered in industrial work associated with continuous exposure to noise has been a refractory disability problem. This is so not only by reason of the lack of an adequate treatment but also because essential precautions are imperfect and rarely instituted. Perhaps this is largely due to the fact that there has been no remedy which is both efficient in its function and acceptable to the worker.
TYPES OF EAR DAMAGE
The significance of "boilermaker's ear" is well known among workers. In otologic practice it represents the clinical entity due to acoustic trauma. The deafness is relative to prolonged and repeated exposure to loud noises and particularly loud sounds of the high frequency range. In present day industry there are two factors which have accentuated the possibility of this disability. There is a demand for an unparalleled speed of production requiring an added number
McCOY DA. THE PREVENTION OF EAR DISABILITY IN INDUSTRY: REPORT ON THE USE OF A PLASTIC MOLD. JAMA. 1943;121(17):1330–1331. doi:10.1001/jama.1943.02840170014004
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