title: Detailed modeling of palpebral fissure and its influence on SAR and temperature rise in human eye under GHz exposures.
abstract: 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 0.25 mm. 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 100 W/m(2). Results reveal that changes in palpebral fissure would produce a 0.23°C variation in maximum temperature rise in lens.
authors.affiliation: Department of Electronic Engineering, City University of Hong Kong, Hong Kong.
authors.forename: Yinliang
authors.initials: Y
authors.lastname: Diao
authors.affiliation: Department of Electronic Engineering, City University of Hong Kong, Hong Kong.
authors.forename: Sai-Wing
authors.initials: SW
authors.lastname: Leung
authors.affiliation: Department of Electronic Engineering, City University of Hong Kong, Hong Kong.
authors.forename: Yaqing
authors.initials: Y
authors.lastname: He
authors.affiliation: Department of Electronic Engineering, City University of Hong Kong, Hong Kong.
authors.forename: Weinong
authors.initials: W
authors.lastname: Sun
authors.affiliation: Hong Kong Productivity Council, Hong Kong.
authors.forename: Kwok-Hung
authors.initials: KH
authors.lastname: Chan
authors.affiliation: Department of Electronic Engineering, City University of Hong Kong, Hong Kong.
authors.forename: Yun-Ming
authors.initials: YM
authors.lastname: Siu
authors.affiliation: Department of Biology and Chemistry, City University of Hong Kong, Hong Kong.
authors.forename: Richard
authors.initials: R
authors.lastname: Kong
mesh_terms: D065638:Absorption, Radiation; D055590:Electromagnetic Phenomena; D005143:Eyelids / Q000033:anatomy & histology* / Q000528:radiation effects*; D006801:Humans; D008297:Male; D008953:Models, Anatomic; D013696:Temperature
keywords: palpebral fissure; plane-wave radiation; specific absorption rate; temperature rise