Posters

Long-term efficacy and safety of small incision lenticule extraction (SMILE) for the correction of astigmatism

Poster Details

First Author: E.Igras POLAND

Co Author(s): B. Czarnota-Nowakowska   P. Krzywicki                 

Abstract Details

Purpose:

To examine the long-term surgical efficacy, safety and stability of small incision lenticule extraction (SMILE) for the surgical correction of astigmatism of 0.75 Diopter (D) and more in Polish laser clinics.

Setting:

Two Optegra Laser Refractive Clinics in Szczecin and Poznan, Poland

Methods:

We reviewed the case notes of all patients who underwent correction of myopic astigmatism between January 2016 and December 2017 using the 500 kHz VisuMax femtosecond laser (Carl Zeiss Meditec). Consecutive patients aged ≥21 with stable refractive errors (-0.5 and -10.0 D) and astigmatism ranging from 0.75D up to 5 D were included. Where available, data from preoperative, 1-week, 2-month, 8-month, and 12-month reviews were analyzed.

Results:

In all, 355 eyes representing 209 patients, median age 32(±5)years, were identified; 58.4% were female and 70% had with-the-rule astigmatism. Mean preoperative UDVA was 0.09±0.09D, BCVA 0.91±0.15D, SEQ -5.6±2.16D and cylinder -1.7±1D. Two-months postoperatively, mean UDVA and BCVA were 0.83±0.24D and 0.91±0.15D, respectively. At 12-month follow-up, 69% achieved UDVA similar or better than their pre-op CDVA and 87% had a UDVA within one line of CDVA. Only 0.4% lost ≥2 lines of CDVA. SEQ was within ±0.50D for 86% and within ±1.00D for 95%. Most(77%), achieved a refractive cylinder within+/-0.50D and 95% within+/-1.0D.

Conclusions:

This study confirms and adds to the growing body of evidence showing that SMILE in myopic astigmatism is an effective procedure with long-term refractive stability in a large sample in two centers followed for up to one year. While the sample mainly included those having with-the-rule astigmatism, almost one-third had oblique and against-the rule cylinders suggesting that irrespective, SMILE is useful for the surgical correction of myopic astigmatism. More research following patients beyond one-year is required.

Financial Disclosure:

None