Arcuate keratotomy in patients with astigmatism up to 3 diopters using low-pulse energy femtosecond laser: three-month results

Session Details

Session Title: Corneal Presbyopia & Astigmatism Correction

Session Date/Time: Tuesday 17/09/2019 | 16:30-18:00

Paper Time: 17:28

Venue: Free Paper Forum: Podium 3

First Author: : L.Schwarzenbacher AUSTRIA

Co Author(s): :    D. Schartmueller   V. Roeggler   C. Leydolt   R. Menapace                    

Abstract Details

Purpose:

To evaluate change in astigmatism and stability after Femtosecond Laser Arcuate Keratotomy over a period of 3 months

Setting:

Department of Ophthalmology, Medical University of Vienna

Methods:

In this prospective study, 50 eyes with mono- or bilateral age-related cataract and regular corneal astigmatism between 1.0 and 3.0 diopters (dpt) were enrolled. Femtosecond Laser Arcuate Keratotomy (Femto-AK) was performed with a low pulse energy Femtosecond Laser (LDV Z8; Ziemer) prior to laser-assisted cataract surgery. Castrop Nomogram by P.Hoffman) was used to calculate corneal arc lengths, based on total corneal power measurents Follow up’s were conducted 1 month and 3 months postoperatively, using both Placido-disk and OCT based topographers. Surgery Induced Astigmatism (SIA) were evaluated and Difference Vector (DV) to target was calculated.

Results:

50 eyes from 20 (54%) female and 14 (46%) male patients were included. Mean UCDVA was 0.18±0.15 (logMAR) after one month and 0.08±0.11 after three months, respectively. Mean preoperative astigmatism value was 1.7±0.58 dpt. Postoperative values reached 0.79±0.40 dpt one month after surgery and 0.75±0.40 dpt after three months. No Femto-AK related complications were observed in this study. More results will be presented.

Conclusions:

Our results show an effective reduction in corneal astigmatism with stable topography over a three month time period. Femto-AK with a low pulse energy Femtosecond Laser device is considered to be a safe procedure.

Financial Disclosure:

None