Detailed modeling of palpebral fissure and its influence on SAR and temperature rise in human eye under GHz exposures

This article investigates variations in specific absorption rate and temperature rise in human eye caused by changes in palpebral fissure, the extent of opening between eyelids, under GHz plane-wave electromagnetic (EM) exposures. Detailed human head models with different palpebral fissure features were developed with a refined spatial resolution of 0.25mm. These head models were then incorporated into both EM and bio-heat simulations, but using finite-difference time-domain method and finite-difference method, respectively. Maximum temperature rise in lens was found to be 0.8°C under EM exposure at 100W/m². Results reveal that changes in palpebral fissure would produce a 0.23°C variation in maximum temperature rise in lens.