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Corneal morphology and posterior corneal surface evaluation after microincision phacoemulsification surgery

Poster Details

First Author: E.Chlasta-Twardzik POLAND

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

Abstract Details

Purpose:

The purpose of the study was the corneal morphology and topography comparison between 2,6 mm and 1,8 mm coaxial phacoemulsification surgery

Setting:

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

Methods:

110 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 2.6mm and 1.8mm surgery. Pre- and postoperative data were evaluated by swept source optical coherence tomography and confocal microscopy. Intraoperative phacoemulsification parameters were collected. Examination was performed preoperatively and on the first, seventh day, one and six months postoperatively. Anterior and posterior corneal astigmatism and elevation was analyzed. The corneal thickness, integrity and 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 -93�Â�µm (1,8mm), -186 �Â�µm (2,6mm) on the first postoperative day. The difference in posterior elevation was not significant on seventh day in 1,8mm, but still significant up to one month in 2,6mm. 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 5,8% (1,8mm), 6,5% (2,6mm) was revealed.

Conclusions:

The corneal morphology and topography changes after phacoemulsification surgery not visible on the slit lamp examination could be monitored with optical coherence tomography and confocal microscopy. The 2.6 mm incisions have a higher impact on the posterior elevation map in the corneal incision meridian.

Financial Disclosure:

NONE

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