Aurelios Augenzentrum Recklinghausen, Recklinghausen, Germany.
J Refract Surg. 2012 Jan;28(1):53-8. doi: 10.3928/1081597X-20110906-01. Epub 2011 Sep 12.
To evaluate the thermal load of ablation in high-speed laser corneal refractive surgery with the AMARIS excimer laser (SCHWIND eye-tech-solutions).
Thermal load from refractive corrections on human corneas using a 500-Hz laser system with a fluence of 500 mJ/cm(2) and aspheric ablation profiles was recorded with an infrared thermography camera. Each single in vivo measurement was analyzed and temperature values were evaluated.
Overall, the maximum temperature change of the ocular surface induced by the refractive ablations was ≤4°C. The increase in the peak temperature of the ocular surface never exceeded 35°C in any case. This low thermal load was independent of the amount of correction the eye achieved.
The thermal load of the ablation in high-speed laser corneal refractive surgery was minimized using a computer algorithm to control the peak temperature to avoid corneal collagen denaturation with minimal compromise on treatment duration.
评估使用 AMARIS 准分子激光（SCHWIND eye-tech-solutions）进行高速激光角膜屈光手术时的消融热负荷。
使用 500-Hz 激光系统和 500 mJ/cm(2)的能量密度以及非球面消融轮廓对人眼角膜进行屈光矫正，用红外热成像摄像机记录热负荷。对每个单次的体内测量进行分析，并评估温度值。
总体而言，屈光消融引起的眼表最大温度变化≤4°C。在任何情况下，眼表的峰值温度升高都从未超过 35°C。这种低热负荷与眼睛的矫正量无关。
通过使用计算机算法来控制峰值温度，以避免角膜胶原变性，从而将高速激光角膜屈光手术中的消融热负荷降至最低，同时最大限度地缩短治疗时间。
