Comparison of corneal morphology and posterior corneal surface evaluation after phacoemulsification surgery and femtosecond laser-assisted cataract surgery

Session Details

Session Title: Presented Poster Session: FLACS

Venue: Poster Village: Pod 1

First Author: : E.Chlasta-Twardzik POLAND

Co Author(s): :    B. Weglarz   A. Nowinska   E. Wylegala                 

Abstract Details

Purpose:

The purpose of the study was to compare the corneal morphology, topography after phacoemulsification surgery versus femtosecond laser-assisted cataract surgery.

Setting:

Chair and Clinical Department of Ophthalmology, School of Medicine and Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Poland.

Methods:

100 patients undergoing phacoemulsification surgery were included in the study. Inclusion criteria were: cataract stage I-IV, no accompanying ophthalmic and systemic diseases which presence or treatment affect cornea. Patients were randomly selected into two groups: 2.4mm group and femtosecond laser group. Pre- and postoperative data were evaluated by swept source optical coherence tomography and confocal microscopy. Control examination was performed preoperatively and on the first, seventh day, one and six months postoperatively. Anterior and posterior corneal topography, astigmatism and elevation was analyzed. The corneal the morphology of the corneal layers was assessed. The endothelial cell density was calculated.

Results:

There was no significant difference in central anterior and posterior astigmatism induction, but we observed significant change in peripheral posterior elevation assessed in the 120-degree meridian mean -107µm (2,4 mm group), -94 µm (femtosecond laser group) on the first postoperative day and on the seventh postoperative day mean -81µm (2,4 mm group), - 54 µm (femtosecond laser group). Corneal morphology analysis revealed no significant differences between groups in a transient peripheral corneal edema, local Descemet membrane detachment, corneal would leakage, microerosion and posterior corneal opacities. The endothelial cell lost of 14% (2,4mm group), 9% (femtosecond laser group) was revealed.

Conclusions:

The optical coherence tomography and confocal microscopy are valuable devices allows to assessment the corneal morphology and topography changes after cataract surgery. The endothelial cell lost was lower in femtosecond laser group. The 2.4 mm incisions have a higher impact on the posterior elevation map in the corneal incision meridian.

Financial Disclosure:

None