Accuracy of toric intraocular lens axis alignment using a 3-dimensional computer-guided visualization system

摘要: Purpose To evaluate the accuracy of toric intraocular lens (IOL) alignment in femtosecond laser–assisted cataract surgery using Truevision 3-dimensional (3-D) computer-guided visualization system compared with a manual marking method. Setting Cullen Eye Institute, Baylor College Medicine, Houston, Texas, USA. Design Retrospective comparative case series. Methods Preoperatively, all patients had corneal topography measurements color light-emitting diode topographer. The 3-D used anterior keratometry values to create an optimized plan for IOL alignment. Intrastromal marks were created by laser at intended meridian, guided ink placed 3 o'clock and 9 o'clock limbus patient sitting upright. Intraoperatively, was align measure angular position relative meridian. Three weeks postoperatively, manifest refraction, corrected distance visual acuity, recorded. Results mean imaging error −0.58 degrees ± 3.90 (SD) (range −9 5 degrees), −0.27 ± 3.65 degrees −8 degrees); neither statistically significantly different from zero ( P  = .28  = .76, respectively). absolute errors 2.96 ± 2.54 2.88 ± 2.18 degrees, respectively. Conclusion combined similar Financial Disclosures Dr. Wang received research support Ziemer USA, Inc. Weikert is consultant Koch Alcon Laboratories, Inc., Abbott Medical Optics, i-Optics Corp, Systems. None other authors has financial or proprietary interest any material method mentioned.