Comparison between femtosecond laser-assisted astigmatic keratotomy and toric intraocular lens implantation for correcting astigmatism

Session Details

Session Title: Femtolaser-Assisted Cataract Surgery (FLACS)

Session Date/Time: Monday 16/09/2019 | 08:30-10:30

Paper Time: 08:48

Venue: Free Paper Forum: Podium 4

First Author: : H.Noh SOUTH KOREA

Co Author(s): :    T. Chung   J. Kim   D. Paik   D. Lim   K. Shin   Y. Yoo              

Abstract Details

Purpose:

We aimed to compare the clinical outcomes of femtosecond laser-assisted astigmatic keratotomy (FSAK) to those of toric intraocular lens (IOL) implantation for cor¬recting astigmatism in patients with cataract.

Setting:

This retrospective case-control study comprised patients who had corneal astigmatism (1.0-3.0 diopters) before the cataract surgery. They underwent combined femtosecond laser-assisted cataract surgery (FLACS) and astigmatic keratotomy (AK) or toric IOL implantation for treating cataract and correcting astigmatism at Samsung Medical Center between March 2017 and December 2018.

Methods:

32 patients (41 eyes) underwent combined FLACS and AK and 23 patients (31 eyes) underwent toric IOL implantation. Among the FSAK group, partial-thickness AK was performed for 22 eyes and full-thickness AK was performed for 19 eyes. The modified nomogram based on our previous study was used to plan the arc length in FSAK in the present study. All patients underwent examinations before, 1 month, and 3 months after surgery; best-corrected visual acuity, manifest refraction (MR), and corneal astigmatism were evaluated and recorded. Vector analysis of astigmatic change was performed by using the Alpins method.

Results:

The refractive astigmatism decreased in both FSAK and toric group. The correction index (CI) of refractive astigmatism was 0.87±0.50 in the FSAK group and 0.98±0.47 in the toric group at 3 months postoperatively. There was no difference between two groups (p=0.374). Among the FSAK group, the CI of refractive astigmatism was 0.76±0.49 in the partial-thickness group and 0.99±0.57 in the full-thickness group; the CI of corneal astigmatism was 0.42±0.32 in partial-thickness group and 0.61±0.73 in full-thickness group at 3 months postoperatively. There were no differences in the CI between two groups (p=0.192 and 0.318).

Conclusions:

FSAK may be effective procedure comparable to toric IOL implantation for correcting preoperative astigmatism in cataract surgery.

Financial Disclosure:

None