One of the most common factors that cause hearing disorders is noise trauma. Noise is an increasing hazard and it is pervasive, which makes it difficult to take precautions and prevent noise-induced hearing loss (NIHL). The prevalence of hearing loss among factory workers to be 42 %. Ocupational noise induced hearing loss (ONIHL) continues to be a significant occupational hazard. ONIHL is permanent and may cause significant disability, for which there currently exists no cure, but is largely preventable. More than 30 million Americans are potentially exposed to hazardous noise levels in occupations such as transportation, construction, and coal mining, as well as recreationally. In the mainstream setting, exposure avoidance strategies aimed to reduce the incidence of ONIHL remain the focus of public health and occupational medicine approaches. In military conditions this is most often caused by such things as explosions, blasts, or loud noises from vehicles ranging from 100 to 140 dB and military weapons generating approximately 140–185 dB peak sound pressure levels.
So-Young Chang, Sung Kyu Lim, Min young Lee, Phil-Sang Chung, Jae-Yun Jung, and Chung-Ku Rhee M.D., "Combination therapy using antioxidants and low level laser therapy (LLLT) on noise induced hearing loss (NIHL)," Proc. SPIE 9689, Photonic Therapeutics and Diagnostics XII, 96892I (Presented at SPIE BiOS: February 14, 2016; Published: 29 February 2016); https://doi.org/10.1117/12.2212380.
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