Finite element analysis of cornea thermal damage due to pulse incidental far IR laser
Finite element analysis of cornea thermal damage due to pulse incidental far IR laser
复制标题
脉冲入射远红外激光角膜热损伤的有限元分析
DOI：
--
复制
发表时间：
2013
影响因子：
2.1
通讯作者：
K. Shibib
中科院分区：
文献类型：
--
作者：
K. Shibib
由于激光系统在人类活动中的广泛使用，可能会发生激光照射的意外事件，其中最容易受伤的部分是眼睛。使用典型的不可见脉冲、远红外、CO2激光束作为内射束，意外击中眼睛，导致其温度升高至极限，在该极限处开始疼痛感，然后是延迟0.25 s的厌恶反应。此时，假设激光束相对于角膜终止。有限元法（FEM）被成功地用于预测，数值，温度分布通过眼睛的前部时，受到激光束。有限元程序采用Visual Basic 6编写。研究了激光参数，如激光束形状、脉冲宽度和重复频率对温度分布的影响以及由此产生的热损伤。本工作的构造的计算机程序的效率进行了检查的预测结果与以前发表的实验和理论工作中获得的比较。比较显示出良好的一致性。
Due to the wide use of laser systems in human activities, an accidental event of laser exposure may occur where the most susceptible part to injury is the eye. A typical invisible pulsed, far IR, CO2 laser beam was used as an intrabeam accidentally struck an eye leading to raise its temperature to a limit where a pain sensation was started followed by aversion response with a delay of 0.25 s. At this time, the laser beam was assumed to terminate with respect to the cornea. The finite element method (FEM) was used successfully to predict, numerically, the temperature distribution through the anterior part of the eye when subjected to the laser beam. The FEM program was written using Visual Basic 6 coding. The effects of laser parameters such as laser beam profile, pulse width, and repetition rate on the temperature distribution and the consequential thermal damage were studied. The efficiency of the constructed computer program of the present work was examined by the comparison of the predicted results with those obtained from previously published experimental and theoretical works. The comparison shows good agreements.
DOI：
10.1016/0360-3016(84)90379-1
发表时间：
1984-01-01
影响因子：
7
作者：
SAPARETO, SA;DEWEY, WC
通讯作者：
DEWEY, WC