Shepherd J R
Sunrise Medical Center, Las Vegas, Nevada 89109.
J Cataract Refract Surg. 1989 May;15(3):335-9. doi: 10.1016/s0886-3350(89)80096-3.
Opacification of the posterior capsule and lack of intraocular lens fixation have been recurring problems and have resulted in a gradual shift from sulcus-fixated silicone lenses to bag-fixated silicone lenses. Postoperative capsular contraction, however, can cause capsular tearing in the periphery and intraocular lens decentration. A new method of combining a small circular capsulotomy, cataract removal without anterior capsular rim tearing, and meticulous bag placement of the silicone lens seems to allow centering and secure fixation of the silicone lens.
后囊膜混浊和人工晶状体固定缺失一直是反复出现的问题，这导致了从沟内固定硅胶晶状体逐渐转向囊袋内固定硅胶晶状体。然而，术后囊膜收缩会导致周边囊膜撕裂和人工晶状体偏心。一种新的方法，即联合小环形撕囊、无撕前囊边缘的白内障摘除以及硅胶晶状体在囊袋内的精细植入，似乎能使硅胶晶状体居中并牢固固定。
