Official ESCRS | European Society of Cataract & Refractive Surgeons
Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Evaluation of a novel eye-tracking navigation system in the alignment of toric IOLs in cataract surgery: a randomised control trial

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Session Details

Session Title: Pseudophakic IOLs: Toric I

Session Date/Time: Saturday 10/09/2016 | 16:00-18:00

Paper Time: 17:00

Venue: Hall C2

First Author: : V.Webers THE NETHERLANDS

Co Author(s): :    N. Visser   N. Bauer   T. Berendschot   F. van den Biggelaar   R. Nuijts        

Abstract Details


To evaluate the accuracy in toric IOL alignment using the VERION Image Guided System versus conventional, manual ink-marking procedure.


Single-centre randomized control trial performed in the University Eye Clinic Maastricht, the Netherlands.


A total of thirty-four eyes (24 patients) with regular corneal astigmatism of at least 1.25 diopters, who required cataract surgery and toric IOL implantation (Acrysof SN6AT3-T9), were randomly assigned to either the VERION-group or the manual marking-group. The primary outcome was to evaluate the alignment of the toric IOL, by using pre- and postoperative images immediately after surgery. Secondary outcomes were to compare postoperative residual astigmatism, uncorrected distance visual acuity (UDVA), and complication profile.


Preoperative mean corneal astigmatism was comparable (-2.35±0.89D vs. -2.42±0.95D, p>.05). Mean toric IOL misalignment immediately postoperative was significant less in the VERION-group (1.33±1.56⁰ vs. 2.76±1.79⁰, p=.02). Three months postoperatively, misalignment measured with slit lamp biomicroscopy was significantly less as well in the VERION-group (2.65±2.05⁰ vs. 4.06±1.89⁰, p<.05). The mean subjective cylinder was -0.36±0.32D and -0.47±0.28D, respectively for the VERION- and manual-group (p>.05). All eyes achieved a refractive cylinder of 1.0D or less. A refractive cylinder of 0.5D and 0.25D was achieved in respectively 81% and 50% in the VERION-group compared to 71% and 33% in the manual-group. Postoperatively, UDVA and BDVA were 0.03±0.10 logMAR and -0.05±0.08logMAR in the VERION-group versus 0.04±0.09logMAR and -0.04±0.07 logMAR in the manual-group (both p>.05).


Misalignment was significant less in the VERION-group, however, no significant difference was found in terms of UDVA. The significant better alignment achieved with the VERION Image Guided System might be (more) clinically relevant in patients with a high(er) preoperative cylinder.

Financial Disclosure:

... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, ... research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, ... receives consulting fees, retainer, or contract payments from a competing company

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