Comparison of different automated approaches for toric IOL alignment: femtosecond laser-assisted capsular markings vs digital visual guidance system

Session Details

Session Title: Presented Poster Session: FLACS

Venue: Poster Village: Pod 1

First Author: : F.Kretz GERMANY

Co Author(s): :    D. Breyer   D. Holland   M. Fischer   S. Abdassalam   M. Gerl   G. Auffarth        

Abstract Details

Purpose:

This study aimed to compare the feasibility and reproducibility of markings for toric IOL alignment in cataract and clear lens exchange patients.

Setting:

Augenärzte Gerl, Kretz & Kollegen, Rheine, Germany member & Breyer - Kaymak - Klabe Augenchirurgie, Düsseldorf & Nordblick GmbH, Kiel, Germany & Univ. ophthalmology hospital, Heidelberg, Germany members of the International Vision Correction Research Centre Network (IVCRC.net), Dept. of Ophthalmology, Univ. of Heidelberg, Germany

Methods:

Patients undergoing femtosecond laser-assisted cataract surgery with the LENSAR System (LENSAR, USA) received capsular marking on the 0° and 180° plane on the margin of the capsulotomy. After further phacoemulsification, the horizontal capsular marks were compared to the horizontal markings of a digital visual guidance system (Callisto, Carl Zeiss Meditech, Germany). Intraoperative images were taken to evaluate accordance between the different markings using planimetric image software. Additionally, preoperative keratometry readings (IOL-Master 700, Carl Zeiss Meditech, Germany) and corneal topography readings (Pentacam HD, Oculus, Wetzlar) were compared to identify factors influencing different axis markings between the two systems.

Results:

As published in previous studies, a slight deviation of the axis was found comparing keratometry readings to corneal topography readings. The capsular markings of the FLACS system showed a precise marking of the intended horizontal axis, comparable to the digital visual guidance system. Still, in cases of conjunctival chemosis, the digital visual guidance system was not able to detect the reference points, while the FLACS markings were always present.

Conclusions:

Latest iterations of FLACS offer precise markings of the capsular bag. The reproducibility is slightly higher compared to digital visual guidance systems as the reference image is taken of the iris rather than conjunctival and scleral vessels.

Financial Disclosure:

... has significant investment interest in a company producing, developing or supplying product or procedure presented, travel has been funded, fully or partially, by a competing company, travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, research is funded, fully or partially, by a competing company, research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, receives non-monetary benefits from a competing company., receives non-monetary benefits from a company producing, developing or supplying the product or procedure presented., receives consulting fees, retainer, or contract payments from a competing company, receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, has significant investment interest in a competing company