Rotational Stability of a Single-Piece Hydrophobic Acrylic Intraocular Lens During Removal of Ophthalmic Viscosurgical Devices

PURPOSE: To compare the effect of cohesive and dispersive ophthalmic viscosurgical device (OVD) on intraoperative rotational stability of the intraocular lens (IOL) with single-piece hydrophobic acrylate platform. DESIGN: Prospective, comparative study. METHODS: This institutional clinical study included 60 eyes of 60 patients who underwent phacoemulsifcation. The patients were equally divided into cohesive OVD (Healon GV; Abbott Medical Optics, Abbott Park, Illinois, USA) group and dispersive OVD (Viscoat; Alcon Laboratories, Fort Worth, Texas, USA) group. Image analysis from the captured digital image was used to measure intraoperative rotation of single-piece hydrophobic acrylate IOL (SA60AT or SA60NT) during OVD removal. RESULTS: Mean intraoperative rotation was 7.42 degrees +/- 4.16 (standard deviation) in dispersive OVD group and 13.08 degrees +/- 5.25 (standard deviation) in cohesive OVD group (P < .001). Twenty-one cases (70%) maintained the alignment within 10 degrees during removal of OVD with dispersive OVD, while only 9 cases (30%) did so with cohesive OVD (P = .005). Counterclockwise rotation was observed in 33% of the all cases. CONCLUSIONS: This study showed that a significant amount of IOL rotation occurred during OVD removal. Intraoperative rotational stability of IOL was greater with Viscoat than with Healon GV. (Am J Ophthalmol 2010; 149:253-257. (C) 2010 by Elsevier Inc. All rights reserved.)Chang DF, 2008, J CATARACT REFR SURG, V34, P1842, DOI 10.1016/j.jcrs.2008.07.012Jampaulo M, 2008, AM J OPHTHALMOL, V146, P550, DOI 10.1016/j.ajo.2008.05.040Mendicute J, 2008, J CATARACT REFR SURG, V34, P601, DOI 10.1016/j.jcrs.2007.11.033Khng C, 2008, J CATARACT REFR SURG, V34, P475, DOI 10.1016/j.jcrs.2007.10.043Lee AC, 2008, CURR OPIN OPHTHALMOL, V19, P13Weinand F, 2007, J CATARACT REFR SURG, V33, P800, DOI 10.1016/j.jcrs.2007.01.030Storr-Paulsen A, 2007, ACTA OPHTHALMOL SCAN, V85, P183, DOI 10.1111/j.1600-0420.2006.00784.xHorn JD, 2007, CURR OPIN OPHTHALMOL, V18, P58De Silva DJ, 2006, J CATARACT REFR SURG, V32, P1492, DOI 10.1016/j.jcrs.2006.04.022NICHAMIN LD, 2006, OPHTHALMOL CLIN N AM, V19, P485Viestenz A, 2005, J CATARACT REFR SURG, V31, P557, DOI 10.1016/j.jcrs.2004.07.019Chang DF, 2003, J CATARACT REFR SURG, V29, P935, DOI 10.1016/S0886-3350(02)01843-6Till JS, 2002, J CATARACT REFR SURG, V28, P295Leyland M, 2001, EYE, V15, P202DONG EY, 2001, KOREAN J OPHTHALMOL, V15, P22Sun XY, 2000, OPHTHALMOLOGY, V107, P1776Ruhswurm I, 2000, J CATARACT REFR SURG, V26, P1022Raviv T, 2000, INT OPHTHALMOL CLIN, V40, P183NOVIS C, 2000, CURR OPIN OPHTHALMOL, V11, P47Patel CK, 1999, OPHTHALMOLOGY, V106, P2190Jacobs BJ, 1999, J CATARACT REFR SURG, V25, P949GRABOW HB, 1999, CLEAR CORNEAL LENS S, P185Budak K, 1998, J CATARACT REFR SURG, V24, P503ARSHINOFF SA, 1997, P 7 ANN NAT OPHTH SP, P29KOHNEN T, 1995, J CATARACT REFR SURG, V21, P417KERSHNER RM, 1995, J CATARACT REFR SURG, V21, P274LANGERMAN DW, 1994, J CATARACT REFR SURG, V20, P84LINDSTROM RL, 1994, CURR OPIN OPHTHALMOL, V5, P1MALONEY WF, 1992, J CATARACT REFR SURG, V18, P190LIESEGANG TJ, 1990, SURV OPHTHALMOL, V34, P268HOFFER KJ, 1980, AM J OPHTHALMOL, V90, P360