Rotational stability of toric intraocular lenses with a newly modified capsular tension ring.

Journal of Cataract and Refractive Surgery
John ZdralBonnie A Henderson

Abstract

To determine whether a newly modified capsular tension ring (CTR) is effective at preventing toric intraocular lens (TIOL) rotation and misalignment. John A. Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. Experimental study. Ten human cadaver eyes were used to test the ease or difficulty of TIOL rotation in the capsular bag under 3 experimental conditions: a TIOL alone, a TIOL with a standard CTR, or a TIOL with a newly modified CTR with indentations in a sinusoidal pattern. Scores for the ease of IOL rotation were compared by using the nonparametric Friedman analysis of variance test. In addition, both anterior and posterior Miyake-Apple views were filmed to observe the rotational stability of TIOLs in the capsular bag under the 3 test conditions. In the ten eyes of five patients, the rotational stability improved with a standard CTR, but further improvement was statistically observed (P < .05) with the newly modified CTR under all test conditions. This was true for both IOLs used (AcrySof and TECNIS toric IOLs), with or without ophthalmic viscosurgical device, and for either clockwise or counterclockwise rotations. A newly designed CTR prototype represents a new technology for improving the rotational stabil...Continue Reading

References

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Jun 5, 2003·Journal of Cataract and Refractive Surgery·David F Chang
Sep 25, 2007·Journal of Cataract and Refractive Surgery·Bonnie An Henderson, Jae Yong Kim
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Jun 24, 2009·Journal of Cataract and Refractive Surgery·David F Chang
Aug 18, 2010·Korean Journal of Ophthalmology : KJO·Myung Hun KimEui-Sang Chung
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Sep 1, 2019·Journal of Cataract and Refractive Surgery·Calin Petru TataruCatalin Dogaroiu

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