Hypothermia treatment for ocular ischemia: A multiphase porous thermal model of human eye

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology Pub Date : 2025-07-01 DOI:10.1016/j.jtherbio.2025.104139

D. Gongal , J.R. Hetling , C.D. Foster

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Abstract

Localized therapeutic hypothermia is a cooling technique to reduce eye temperature to prevent neuron loss under ischemic conditions. The treatment is a non-invasive intervention technique that aids recovery and may reduce vision loss in ocular ischemia patients. The paper presents a thermal analysis simulation to predict the temperature change in the human eye under local hypothermia treatment using a scleral contact cooling ring device. A thermoregulating blood flow model is introduced to simulate realistic blood circulation in the eye using a three-phase porous media that includes tissue, inflowing blood, and outflowing blood. A transient analysis is performed using a three-dimensional human eye model consisting of an ocular globe and its surrounding fat and muscles. The results show that the optic nerve head and retina temperature decreases to the therapeutic temperature of below 34 °C in 10.58 min of application of the eye cooling device. Sensitivity analysis was performed on all the material and thermal properties to identify the critical variables in the thermal evaluation of the human eye.

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低温治疗眼缺血：人眼多相多孔热模型

局部低温治疗是一种冷却技术，以降低眼睛温度，以防止神经元损失在缺血条件下。治疗是一种非侵入性的介入技术，有助于恢复，并可能减少眼缺血患者的视力丧失。本文提出了一种热分析模拟方法来预测使用巩膜接触冷却环装置进行局部低温治疗时人眼的温度变化。介绍了一种热调节血流模型来模拟真实的血液循环在眼睛中使用三相多孔介质，包括组织，流入血液和流出血液。瞬态分析是使用一个三维人眼模型，包括眼球及其周围的脂肪和肌肉。结果表明，视神经头和视网膜温度在10.58 min内降至治疗温度34℃以下。对所有材料和热性能进行敏感性分析，以确定人眼热评价中的关键变量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of thermal biology 生物-动物学

CiteScore

5.30

自引率

7.40%

发文量

196

审稿时长

14.5 weeks

期刊介绍： The Journal of Thermal Biology publishes articles that advance our knowledge on the ways and mechanisms through which temperature affects man and animals. This includes studies of their responses to these effects and on the ecological consequences. Directly relevant to this theme are: • The mechanisms of thermal limitation, heat and cold injury, and the resistance of organisms to extremes of temperature • The mechanisms involved in acclimation, acclimatization and evolutionary adaptation to temperature • Mechanisms underlying the patterns of hibernation, torpor, dormancy, aestivation and diapause • Effects of temperature on reproduction and development, growth, ageing and life-span • Studies on modelling heat transfer between organisms and their environment • The contributions of temperature to effects of climate change on animal species and man • Studies of conservation biology and physiology related to temperature • Behavioural and physiological regulation of body temperature including its pathophysiology and fever • Medical applications of hypo- and hyperthermia Article types: • Original articles • Review articles