Comparison of visual outcomes, alignment accuracy, and surgical time between two methods of corneal marking for toric intraocular lens implantation

Session Details

Session Title: Rotational Stability & Outcomes

Session Date/Time: Monday 24/09/2018 | 14:30-16:00

Paper Time: 14:58

Venue: Room A4

First Author: : W.Mayer GERMANY

Co Author(s): :    T. Kreutzer   M. Dirisamer   C. Kern   K. Kortuem   S. Priglinger   D. Kook     

Abstract Details

Purpose:

To compare the efficacy of a computer-assisted marker system for toric intraocular lenses (TIOL) with manual marking techniques.

Setting:

University Eye Hospital, Ludwig-Maximilians-University, Munich, Germany.

Methods:

This prospective study included patients having cataract surgery with implantation of a toric IOL (Torbi 709 M). Theywere randomly assigned to 1 of 2 groups based on the marking system used, manual or digital (Zeiss Callisto Eye). Patients were included if they had age-related cataract and a regular corneal astigmatism of 1.25 diopters (D) or higher. Visual and refractive outcomes as well as rotational stability were evaluated. Vector analysis was performed to evaluate total astigmatic changes.

Results:

The study comprised 57 eyes of 29 patients; 28 eyes in the manual group and 29 eyes in the digital group. The mean toric IOL misalignment was significantly lower in the digital group than in the manual group (P=0.026). The mean deviation from target induced astigmatism was significantly lower in the digital group (0.10+/-0.08D versus 0.22+/-0.14D; P=0.008). During surgery, mean toric IOL alignment time was significantly shorter in the digital group (37.2+/-11.9 seconds versus 59.4+/-15.3 seconds; P=0.003). The mean overall time required to perform the surgery was significantly shorter in the digital group (727.2+/-198.4 seconds versus 1110.0+/-382.2 seconds; P<0.001).

Conclusions:

A digital tracking approach for toric IOL alignment was efficient and safe to improve refractive outcomes. Furthermore, image-guided surgery helped streamline the workflow in refractive cataract surgery.

Financial Disclosure:

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