PMID: 9159681Apr 1, 1997Paper

Effect of incision location on preoperative oblique astigmatism after scleral tunnel incision

Journal of Cataract and Refractive Surgery
C WirbelauerJ Wollensak

Abstract

To evaluate the effect of incision location or clinically relevant preoperative oblique astigmatism. Department of Ophthalmology, Virchow Medical Center, Humboldt-University, Berlin, Germany. This prospective study included 68 patients who had phacoemulsification and posterior chamber lens implantation using a standardized 7.0 mm self-sealing trapezoidal scleral tunnel incision. Each patient was randomly assigned to one of three incision locations: Group A, conventional superior incision; Group B, temporal incision; Group C, oblique incision centered on the steeper meridian (modified BENT incision). Astigmatism analysis was performed by manual keratometry and corneal topography. A significant mean reduction in astigmatism of 0.58 diopter (D) (P < .01) was achieved in only the modified BENT incision group. Postoperatively, significant flattening of 0.27 D (P < .01) in the steeper meridian as well as steepening of 0.29 D (P < .01) in the flatter meridian occurred. No decrease in astigmatism was noted in the superior or temporal incision groups. Five months postoperatively, vector analysis showed that surgically induced astigmatism was significantly higher in the superior incision group (1.16 D +/- 0.44 [SD]) than in the temporal ...Continue Reading

References

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Citations

Sep 21, 2004·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Christopher WirbelauerDuy Thoai Pham
Feb 24, 2005·Cornea·Christopher WirbelauerDuy Thoai Pham
Jul 15, 1999·Journal of Cataract and Refractive Surgery·B J JacobsT A Deutsch
Feb 22, 2005·Journal of Cataract and Refractive Surgery·Peter M PinskyDimitri Chernyak
Oct 18, 2000·Journal of Cataract and Refractive Surgery·K HayashiF Hayashi
May 16, 2002·Clinical & Experimental Ophthalmology·Magdalena GuzowskiPaul Mitchell
Dec 2, 2006·Journal of Cataract and Refractive Surgery·Edmondo BorasioVincenzo Maurino
Nov 21, 2007·Annals of Ophthalmology·Bhaskar ReddyVirendar Pratap Singh

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