Oizumi Takuya, Laakso Ilkka, Hirata Akimasa, Fujiwara Osamu, Watanabe Soichi, Taki Masao, Kojima Masami, Sasaki Hiroshi, Sasaki Kazuyuki
Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya-shi 466-8555, Japan.
Radiat Prot Dosimetry. 2013 Jul;155(3):284-91. doi: 10.1093/rpd/nct010. Epub 2013 Feb 6.
The eye is said to be one of the most sensitive organs to microwave heating. According to previous studies, the possibility of microwave-induced cataract formation has been experimentally investigated in rabbit and monkey eyes, but not for the human eye due to ethical reasons. In the present study, the temperature elevation in the lens, the skin around the eye and the core temperature of numerical human and rabbit models for far-field and near-field exposures at 2.45 GHz are investigated. The temperature elevations in the human and rabbit models were compared with the threshold temperatures for inducing cataracts, thermal pain in the skin and reversible health effects such as heat exhaustion or heat stroke. For plane-wave exposure, the core temperature elevation is shown to be essential both in the human and in the rabbit models as suggested in the international guidelines and standards. For localised exposure of the human eye, the temperature elevation of the skin was essential, and the lens temperature did not reach its threshold for thermal pain. On the other hand, the lens temperature elevation was found to be dominant for the rabbit eye.
眼睛被认为是对微波加热最为敏感的器官之一。根据先前的研究，已经在兔子和猴子的眼睛上通过实验研究了微波诱发白内障形成的可能性，但出于伦理原因，尚未对人类眼睛进行此类研究。在本研究中，对2.45GHz远场和近场暴露情况下，数值人体模型和兔子模型的晶状体、眼睛周围皮肤的温度升高以及核心温度进行了研究。将人体和兔子模型中的温度升高与诱发白内障、皮肤热痛以及诸如热衰竭或中暑等可逆健康影响的阈值温度进行了比较。对于平面波暴露，正如国际指南和标准中所建议的那样，核心温度升高在人体和兔子模型中都被证明是至关重要的。对于人眼的局部暴露，皮肤的温度升高至关重要，而晶状体温度未达到热痛阈值。另一方面，发现兔子眼睛中晶状体温度升高占主导地位。
