使用铒钇铝石榴石激光和铒钪镓石榴石激光进行激光晶状体乳化术的比较。

Comparison of laser phacovaporization using the Er-YAG and the Er-YSGG laser.

作者信息

Gailitis R P, Patterson S W, Samuels M A, Hagen K, Ren Q, Waring G O

机构信息

Eye Care and Surgery Center of Fort Lauderdale, FL 33304.

出版信息

Arch Ophthalmol. 1993 May;111(5):697-700. doi: 10.1001/archopht.1993.01090050131042.

DOI:10.1001/archopht.1993.01090050131042

PMID:8489455

Abstract

OBJECTIVE

To study the interaction of the erbium (Er)-YAG (2.94 microns) and the Er-YSGG (2.79 microns) lasers with the human crystalline lens tissue.

METHODS

Fresh human crystalline lens sections were used to measure the photovaporization threshold, rate, and damage zone of the two lasers.

RESULTS

We found the photovaporization threshold for the Er-YAG and the Er-YSGG lasers to be 1.4 J/cm2 and 5.5 J/cm2, respectively. At 10 J/cm2, the photovaporization rate is 67.9 microns per pulse for the Er-YAG laser and 18.4 microns per pulse for the Er-YSGG laser. The increased rate of photovaporization as a function of radiant energy for the Er-YAG laser is almost twice that for the Er-YSGG. Damage zones for the Er-YAG laser ranged from 4 to 9 microns compared with 10 to 22 microns for the Er-YSGG.

CONCLUSIONS

It is apparent that both lasers can adequately photovaporize human crystalline lens tissue and should be further studied for this purpose.

摘要

目的

研究铒（Er）-钇铝石榴石（YAG，波长2.94微米）激光和铒-钪镓石榴石（Er-YSGG，波长2.79微米）激光与人类晶状体组织的相互作用。

方法

使用新鲜的人类晶状体切片来测量这两种激光的光汽化阈值、速率和损伤区域。

结果

我们发现铒-钇铝石榴石激光和铒-钪镓石榴石激光的光汽化阈值分别为1.4 J/cm²和5.5 J/cm²。在10 J/cm²时，铒-钇铝石榴石激光的光汽化速率为每脉冲67.9微米，铒-钪镓石榴石激光为每脉冲18.4微米。铒-钇铝石榴石激光的光汽化速率随辐射能量增加的幅度几乎是铒-钪镓石榴石激光（增加幅度）的两倍。铒-钇铝石榴石激光的损伤区域为4至9微米，而铒-钪镓石榴石激光的损伤区域为从10至22微米。