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Intraoperative alignment procedure for toric intraocular lenses to yield optimal suppression of astigmatism

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Session Details

Session Title: Pseudophakic IOLs: Toric Cataract Surgery Equipment

Session Date/Time: Tuesday 08/09/2015 | 14:00-16:00

Paper Time: 15:14

Venue: Room 1

First Author: : A.Cantagalli ITALY

Co Author(s): :    M. Avenhaus                    

Abstract Details


To demonstrate the efficacy of intraoperative wavefront guidance to achieve optimal alignment without prior marking


Private Hospital,GSD Villa Erbos, Bologna, Italy


This study was performed with the assistance of the intraoperative aberrometer I-O-W-A (Eyesight&Vision, Germany). The aphakic astigmatic axis was characterized in an intraoperative measurement. First, this axis was utilized as a guide for the final alignment of the toric IOL. Then, the IOL was further rotated to tune for a minimal residual cylinder. We implanted different toric IOLs with an astigmatic equivalent >2 diopters in the corneal plane. No marking procedure was performed before surgery


In total, 20 eyes will be included. The intraoperative wavefront on the pseudophakic eye is compared against the wavefront acquired by iTrace on the first follow-up


The intraoperative wavefront technology provides exciting new means to minimize the pseudophakic astigmatism. The continuous intraoperative measurement equips the surgeon with a guidance tool to optimize the alignment without the need of preoperative marking. We found high correlation between the final intraoperatively determined ametropia and the measurement on the first follow-up.

Financial Interest:

One of the authors is employed by a for-profit company with an interest in the subject of the presentation

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