Implantation of toric intraocular lens and femtolaser arcuate keratotomy as ways for corneal astigmatism correction in single-stage phacoemulsification

Session Details

Session Title: Rotational Stability & Outcomes

Session Date/Time: Monday 24/09/2018 | 14:30-16:00

Paper Time: 15:44

Venue: Room A4

First Author: : A. Chuprov RUSSIA

Co Author(s): :    K. Malgin                    

Abstract Details

Purpose:

To compare the efficacy of 2 methods for cornel astigmatism correction: phacoemulsification with toric IOL implantation and femtolaser arcuate keratotomy.

Setting:

Orenburg branch of S.Fyodorov Eye Microsurgery Federal State Institution

Methods:

64 patients (80eyes) with lens pathology accompanied by corneal astigmatism from 0.75D to 8.0D underwent the surgery. Depending on the method of corneal astigmatism correction all patients were divided into 2 groups (40eyes in each group): group 1 – implantation of toric IOL (astigmatism 1.0D - 8.0D), group 2 – femtolaser arcuate keratotomy (astigmatism 0.75D - 4.5D). Efficacy was assessed by visual acuity, data from autorefractometry, keratotopography, aberrometry. The operation and postoperative period proceeded without complications. Femtolaser incisions were performed using LensX system, then they were completely opened. The toric IOL was implanted under the control of the Verion marker.

Results:

On the 1stday visual acuity was 0.8-1.0 in both groups. Keratometry, keratotopography in group 1 didn’t differ from preoperative data. Toric IOL position coincided with steep axis. In group 2, the magnitude of corneal astigmatism decreased by 80-90% of the initial value. According to keratotopogram SRI decreased 1.5 times the original value, SAI decreased 2 times the original value. Six months later, in 5 cases of group 1 (12.5%) visual acuity was 0.3-0.4 without correction due to IOL rotation as a result of capsular bag contracture. In 4 cases of group 2 (10%) it was 0.5-0.6 because of residual astigmatism.

Conclusions:

Phacoemulsification with toric IOL implantation and femtolaser arcuate keratotomy are effective, modern methods for corneal astigmatism correction. In the long-term postoperative period, the stability of the functional results remains in most cases. The toric IOL tends to rotation both independently after the operation, and because of the contracture of the capsular bag; after femtolaser arcuate keratotomy, visual function decrease due to residual astigmatism is noted.

Financial Disclosure:

-