Specific Absorption Rate in Human Eye Model Exposed to Mobile Phone Radiation: A FDTD Study

Abstract

It is imperative to recognize that extended exposure to radiofrequency (RF) waves can significantly affect the specific absorption rate (SAR) values in human eye tissues. In this study, we calculated the SAR values for the multilayered models of the Human Head and the Human Eye through various exposure periods (30 min, 45 min, 1 hour, 1.5 hours, 2 h) at frequencies of 0.9 GHz and 1.8 GHz emitted from mobile phones antennas using MATLAB and the Finite Difference Time Doman (FDTD) method. The results indicate that increasing the exposure period of RF waves, results in elevated SAR values in the human eye tissues. Specifically, the Cornea in the Human Eye model experiences a drastic increase in SAR value to 19.44 W/kg after just 1.5 hours of exposure at a frequency of 0.9 GHz, which is a high value due to the increasing exposure period and interference. This significant increase in the SAR value presents a notable threat to one's health, as it is vulnerable to the constructive interference of electric waves from the antenna, which can amplify its strength. This is particularly crucial when prolonged exposure is considered. In light of these findings, it is imperative to prioritize safety and take all necessary measures to limit exposure to RF waves.