Temperature increase in porcine cadaver iris during direct illumination by femtosecond laser pulses.
Temperature increase in porcine cadaver iris during direct illumination by femtosecond laser pulses.
复制标题
飞秒激光脉冲直接照射期间猪尸体虹膜温度升高。
DOI：
10.1016/j.jcrs.2010.09.018
复制
发表时间：
2011
影响因子：
2.8
通讯作者：
Juhasz,Tibor
中科院分区：
文献类型：
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作者：
Sun,Hui;Kurtz,RonaldM;Mikula,EricR;Juhasz,Tibor
目得：测量飞秒激光直接照射时猪尸体虹膜的温升，作为飞秒激光角膜手术中虹膜激光暴露的模型。单位：美国加州尔湾市加州大学尔湾分校眼科。设计：实验研究。方法：使用红外热成像摄像机在1至2 μJ的脉冲能量水平（大约相当于每个激光脉冲2至4 μJ的手术能量）下原位测量60 kHz商用飞秒激光在猪尸体虹膜中引起的温度升高。研究结果：在猪尸体虹膜中观察到温度升高高达2.3°C（对应于2 μJ和24秒照明），对于相同的激光能量照明，样本之间的温度曲线几乎没有变化。结论：60 kHz商用飞秒激光器在本研究中使用的脉冲能量约为评价范围的下限，预期会导致温度升高1.2°C，因此不会对虹膜造成安全危害。财务披露：没有作者在提到的任何材料或方法中拥有经济或所有权利益。
PURPOSE: To measure the temperature rise in porcine cadaver iris during direct illumination by the femtosecond laser as a model for laser exposure of the iris during femtosecond laser corneal surgery. SETTING: Department of Ophthalmology, University of California-Irvine, Irvine, California, USA. DESIGN: Experimental study. METHODS: The temperature increase induced by a 60 kHz commercial femtosecond laser in porcine cadaver iris was measured in situ using an infrared thermal imaging camera at pulse energy levels ranging from 1 to 2 μJ (corresponding approximately to surgical energies of 2 to 4 μJ per laser pulse). RESULTS: Temperature increases up to 2.3°C (corresponding to 2 μJ and 24-second illumination) were observed in the porcine cadaver iris with little variation in temperature profiles between specimens for the same laser energy illumination. CONCLUSIONS: The 60 kHz commercial femtosecond laser operating with pulse energies at approximately the lower limit of the range evaluated in this study would be expected to result in a 1.2°C temperature increase and therefore does not present a safety hazard to the iris. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.