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Y. Harada, R. Sohma, A. Tawara; Inhibitory Effect of Capsular Tension Ring on Anterior Capsule Shrinkage in Exfoliation Syndrome After Cataract Surgery. Invest. Ophthalmol. Vis. Sci. 2007;48(13):1086.
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To examine the inhibitory effect of capsular tension ring (CTR) on anterior capsule shrinkage in exfoliation syndrome after cataract surgery.
Twenty-two eyes of 17 patients with exfoliation syndrome had phacoemulsification and aspiration (PEA) with intraocular lens (IOL) (HOYATM VA60BA) implantation. In A group (10 eyes), we performed only cataract surgery without using CTR. In B group (6 eyes), we inserted CTR (LucidTM CTR 98A) after IOL insertion. In C group (6 eyes), after CTR insertion, we sutured both eyelets by a polypropylene thread. The cases with ectopia lentis and lensdonasis during operation and preoperation were excluded. We used a scale of a Haag-Strait slit lamp and measured longitudinal diameters and transverse diameters of postoperative capsulorhexis opening. We calculated the area of anterior capsule opening. The measurements were taken 1 day (baseline), 2, 4, 8 and 12 weeks postoperatively. We used Wilcoxon signed-ranks test for a chronologic change, and Kruskal-Wallis test for comparison between each group.
The area of anterior capsule opening had decreased significantly in A group 4weeks later postoperatively (P <0.05). In B group, the area significantly decreased in 12 weeks (P <0.05). But there was no significant change in C group. And There was no significant difference among three groups in 2, 4, 8weeks, but the area of A group was significantly smaller than that of C group in 12 weeks (P <0.05).
In cataract surgery of exfoliation syndrome, we could inhibit the anterior capsule shrinkage if we closed the eyelets of CTR.
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