Human Eye Temperature Analysis
Despite fluctuation of ambienttemperaturewithin a narrow range, the body core temperature always remains constant. But humaneye always exposed to environment. The only shield for eye is eyelid which covers only for three seconds in every minute. That is not enough to protect eye from rough environment specially, in case of extreme situations. That’s why ocular surface has to experience thermal stress in those situations. Acknowledgement of thermal response of the human eye due to such interruption is thus utmost necessary to predict the intensity of stress and ensure safety. Moreover,in considering safety standards for exposure of workers to infrared radiation it is necessary to be able to calculate temperature rises experienced in the human …show more content…
Ng and Ooiinvestigates the effect of various parameters in human eye in [Ng and Ooi (2006)] like as [Scott and Jenifer (1988)] for two-dimensional case using commercial numerical solver FEM LAB3.0. His work was extended to three-dimensional case in [Ng and Ooi (2007)], where he examines the effect of eye tumour in human eye temperature using boundary element method. Where Narasimhan uses FVM to know the transient temperature in various part of the human eye subjected to laser radiation[Narasimhan et al (2010)]. In another paper he uses Pennesbioheat equation to predict heat transport process of the human eye subjected to laser radiation[16]. Where Wang and Qin uses HFS-FEM method to simulate the heat transfer in human eye in [Wang and Qin …show more content…
Anderson (1968)]. Hence it is necessary to investigate the effects of blood perfusion and metabolism in order to obtain a more accurate result. In this paper presents the steady and transient behaviour of human eye in one dimensional space. This study incorporated with the blood perfusion and metabolism in retina and sclera. Results are calculated with and without considering their effect to know their significance in human eye temperature. Results shows that the effect of blood perfusion and metabolism is significant in maintaining eye temperature. Moreover as thermal properties of the eye plays considerable role in thermoregulation of the eye ball temperature, results also calculate for different thermal properties of eye organs. However for the normal unexposed eye effect of factors such as blinking and eyelid closure are not considered in this
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