Chung D Y, Mason K, Willson G N, Gannon R P
J Occup Med. 1983 Jul;25(7):541-3.
Shingle sawyers are exposed to noise predominantly from the left side. This study examined the asymmetry in hearing loss among shingle sawyers and its possible relation to the difference in noise exposure to the two ears. The results suggest that the lateral difference in noise exposure in industry, even in the obvious case of a shingle sawyer, is small. The resulting asymmetrical noise-induced hearing loss is also relatively small. Therefore, significant asymmetry in hearing loss in this type of occupation should be viewed with caution. Special tests and medical examination should be undertaken to determine if there are other contributing factors.
木瓦锯木工主要暴露于来自左侧的噪音中。本研究调查了木瓦锯木工听力损失的不对称性及其与双耳噪音暴露差异的可能关系。结果表明，在工业环境中，即使是像木瓦锯木工这种明显的情况，噪音暴露的左右侧差异也很小。由此产生的不对称性噪声性听力损失也相对较小。因此，对于这类职业中听力损失的显著不对称性应谨慎看待。应进行特殊测试和医学检查以确定是否存在其他影响因素。
