Svirin A V, Kolesnikov D O, Volobueva T M
Vestn Oftalmol. 1991 Sep-Oct;107(5):60-3.
Side effects of laser on the posterior corneal epithelium and the retina during intracapsular YAG laser fragmentation of transparent lens fibers in various modes of laser operation were experimentally studied. The pulse power varied from 3 to 7.7 mJ, number of pulses from 55 to 160, length of exposure 10(-8) sec, diameter of the spot in the focus 30 microns. Animal eyes were enucleated on days 3-6 after the procedure. Posterior corneal epithelium was examined in the Hitachi scanning electron microscope, the retina in a light microscope. The findings evidence that injury to the posterior corneal epithelium in intracapsular YAG laser fragmentation of the lens depends mostly on the number of pulses and not on the exposure energy. A safe number of coagulates should not surpass 100, this being quite sufficient for fragmentation of the lens fibers at exposure power of 5-6 mJ. Such operation mode is safe for the retina as well, this recommending it for clinical use.
通过实验研究了在不同激光操作模式下，囊内YAG激光碎裂透明晶状体纤维过程中激光对角膜后上皮和视网膜的副作用。脉冲功率在3至7.7毫焦之间变化，脉冲数在55至160之间，曝光时间为10（-8）秒，焦点处光斑直径为30微米。术后3至6天摘除动物眼球。在日立扫描电子显微镜下检查角膜后上皮，在光学显微镜下检查视网膜。研究结果表明，囊内YAG激光碎裂晶状体时，角膜后上皮的损伤主要取决于脉冲数，而不是曝光能量。安全的凝固点数不应超过100，这对于在5 - 6毫焦的曝光功率下碎裂晶状体纤维来说已经足够。这种操作模式对视网膜也是安全的，因此推荐用于临床。
