Smith S G, Snowden F M
General Ophthalmology Service, Wills Eye Hospital, Philadelphia, Pennsylvania.
J Cataract Refract Surg. 1988 Nov;14(6):660-3. doi: 10.1016/s0886-3350(88)80036-1.
Intraocular lenses (IOLs) suitable for implantation were analyzed for the presence of refractile particles. These were found in lathe-cut and injection-molded lenses from various manufacturers. A YAG laser was focused 2 mm beyond the IOLs in a special test chamber and fired through them. The IOLs were then analyzed for damage. A photographically documented study of six IOLs using Q-switched and mode-locked lasers showed optical breakdown occurring within the IOLs; this was not clearly related to refractile particles. Optical breakdown did not occur in two IOLs with a similar number of refractile particles. Damage was seen with the mode-locked but not with the Q-switched laser. The optical breakdown occurred more frequently at high power (5.0 mJ) than at low power (1.2 mJ).
对适合植入的人工晶状体（IOL）进行分析，以检测其中折射颗粒的存在情况。在来自不同制造商的车床切割和注塑成型的晶状体中均发现了这些颗粒。在一个特殊的测试腔室中，将YAG激光聚焦在人工晶状体后方2毫米处，并穿过晶状体发射。然后对人工晶状体进行损伤分析。一项对六个人工晶状体使用调Q激光和锁模激光的摄影记录研究表明，人工晶状体内发生了光学击穿；这与折射颗粒并无明显关联。在两个含有相似数量折射颗粒的人工晶状体中未发生光学击穿。锁模激光造成了损伤，而调Q激光未造成损伤。光学击穿在高功率（5.0 mJ）下比在低功率（1.2 mJ）下更频繁发生。
