Dürr U, Fankhauser F
Meridian Inc., Bern, Switzerland.
Ger J Ophthalmol. 1994 Aug;3(4-5):202-11.
Collateral, thermally induced structural damage during laser sclerostomy ab interno or ab externo was investigated theoretically and compared with experimental results. We show that collateral heat damage in contact strategies using fiber delivery is mainly due to heat conductivity following explosive ablation. Electron micrographs of perforated porcine eyes show that the damage is only weakly dependent on the laser wavelength. The experiments also demonstrate that simultaneous application of laser irradiation and pressure with the fiber tip yield efficient perforation of scleral tissue even when the weakly absorbed radiation of Nd:YAG or diode lasers is employed.
对激光巩膜造口术经内路或经外路过程中热诱导的附带结构损伤进行了理论研究，并与实验结果进行了比较。我们表明，在使用光纤传输的接触策略中，附带热损伤主要是由于爆炸式消融后的热传导所致。猪眼穿孔的电子显微镜照片显示，损伤仅微弱地依赖于激光波长。实验还表明，即使采用钕:钇铝石榴石激光或二极管激光的弱吸收辐射，在光纤尖端同时施加激光照射和压力也能有效地穿透巩膜组织。
