Born C P, Ryan D K
Gundersen Clinic, Department of Ophthalmology, La Crosse, Wisconsin 54601.
J Cataract Refract Surg. 1990 Mar;16(2):188-92. doi: 10.1016/s0886-3350(13)80728-6.
Secondary capsular opacification is a common complication of extracapsular cataract extraction. We have done a retrospective study of 1,040 consecutive posterior chamber implants using four optic designs. The annual incidence of capsular opacification requiring capsulotomy was calculated to see if the optic design was a possible factor. The laser ridge and laser "peg" optics each had a cumulative capsulotomy rate of over 40.0% at three years and the convex-plano optic, over 40.0% at five years. Optics of plano-convex/biconvex designs had a cumulative capsulotomy rate of 5.0% at three years and 6.5% at five years. These results strongly suggest that capsular opacification is retarded when there is broad adhesion of the lens optic to the posterior capsule.
后囊混浊是囊外白内障摘除术的常见并发症。我们对连续使用四种光学设计的1040例后房型人工晶状体植入术进行了回顾性研究。计算需要行囊切开术的囊混浊年发生率，以观察光学设计是否为可能的影响因素。激光嵴和激光“栓”光学设计在三年时的累积囊切开率均超过40.0%，平凸光学设计在五年时超过40.0%。平凸/双凸设计的光学元件在三年时的累积囊切开率为5.0%，五年时为6.5%。这些结果有力地表明，当晶状体光学部与后囊广泛粘连时，囊混浊会延迟发生。
