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Changes in high order aberrations of cornea after phacoemulsification

Poster Details

First Author: M.Lazicka Galecka POLAND

Co Author(s):    T. Galecki   J. Przybek   A. Kaminska   J. Szaflik   J. Szaflik        

Abstract Details

Purpose:

To study the effects of phacoemulsification surgery on the optical high order aberrations (HOA) of the cornea measured with Topcon KR-1W

Setting:

Department of Ophthalmology Medical University of Warsaw, Poland

Methods:

It was a prospective case series study. HOAs of cornea were measured before and after phacoemulsification surgery on 51 eyes of 45 patients. Monofocal foldable IOLs were implanted after phacoemulsification through a clear-cornea, 2.4 mm incision without suture. Patients were observed 1 day before surgery, and at 7 days, 1 month and 3 months after surgery. HOAs included the total high order aberration (tHOA), spherical aberration (SA), coma, trefoil, 3rd, 4th, 5th, 6th order aberrations. Aberrations were compared in each eye using repeated measures and the optical changes induced by surgery were investigated.

Results:

The total HOA increased slightly from a mean of (0.289 +/- 0.171) microm preoperatively to (0.312 +/- 0.158) microm postoperatively with 3 mm aperture; and (0.980 +/- 0.215) microm preoperatively to (1.054 +/- 0.308) microm postoperatively with 6 mm aperture, respectively. The increase was statistically significant,. The changes of other HOAs were similar to the total HOA pre- and postoperative. The changes of other HOAs were similar to the total HOA pre- and postoperatively.

Conclusions:

Phacoemulsification cataract surgery does not systematically degrade the optical quality of the anterior corneal surface. However, it introduces significant changes in most HOAs of the posterior surface of cornea, so the surgery may degrade the optical quality of the posterior corneal surface.

Financial Disclosure:

NONE

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