THE COMPUTATION OF TEMPERATURE RISES IN THE HUMAN-EYE INDUCED BY INFRARED RADIATION
THE COMPUTATION OF TEMPERATURE RISES IN THE HUMAN-EYE INDUCED BY INFRARED RADIATION
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DOI：
10.1088/0031-9155/33/2/004
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发表时间：
1988-02-01
影响因子：
3.5
通讯作者：
SCOTT, JA
中科院分区：
文献类型：
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作者：
SCOTT, JA
多年来，长期暴露于低水平的工业红外辐射与白内障的发生有关；损伤机制被广泛认为是热的。利用人眼有限元模型计算了眼内介质在红外辐射作用下的温升。该模型用于计算不同曝光时间和入射辐照度范围下的瞬态和稳态温度分布。研究了眼的自然冷却机制对加热的影响。给出了红外照射下眼睛的特定吸收率。对于1500摄氏度的辐射源，虹膜和镜片对辐射能的吸收加上前区热量的传导，导致镜片温度升高1-2摄氏度，但在极端暴露条件下，温度升高的幅度要高得多。
Long-term industrial exposure to low levels of infrared radiation has for many years been associated with the development of cataracts; the injury mechanism is widely held to be thermal. A finite element model of the human eye is employed to calculate the temperature rises experienced by the intraocular media when exposed to infrared radiation. The model is used to calculate transient and steady-state temperature distributions for various exposure times and a range of incident irradiances. The effect of the eye's natural cooling mechanisms on the heating is investigated. Specific absorption rates in the infrared irradiated eye are presented. For a radiation source of 1500 degrees C, absorption of radiant energy by the iris and the lens combined with conduction of heat from the anterior regions is found to be responsible for increases in the lens temperature of 1-2 degrees C, but under extreme exposure conditions the temperature rises are found to be substantially higher.