Standard wavefront-optimized ablation profile for high myopia and astigmatism laser correction

Poster Details

First Author: V.Neyasov RUSSIA

Co Author(s):    A. Ivashina   N. Korshunova           

Abstract Details

Purpose:

We present the postoperative clinical outcomes of LASIK performed with Allegretto Wave excimer laser to correct high myopia and astigmatism using standard aspheric wavefront-optimized ablation profile.

Setting:

Ophthalmic clinic " OKOMED" , Moscow, Russia

Methods:

Fifty six consecutive eyes of 28 patients, aged 20 to 38 years, (mean age 25 years) underwent LASIK procedure to correct high myopia and high myopia with astigmatism. All LASIK procedures were performed using standard aspheric wavefront-optimized algorithm with 6,0 or 6,5 mm optical zone. Target refraction was -0,5 D or emmetropia. Clinical outcomes were evaluated in terms of predictability, safety, refractive and functional results (UCVA and BCVA). The follow-up period was six months after correction.

Results:

Preoperative spheroequivalent refractive error (SRE) ranged - 6,75 to -10,75 D (mean -7,47±1,21 D). Mean corneal cylinder was - 1,46±1,32 D (range - 0,25 to – 3,25 D). At the last visit, 75,8% of eyes not needed any correction, 88,8% were within -0.5 D of intended correction and 100% were within -1,25 D. Mean SRE was – 0,32±0,43 D (range -1,25 to +0,25 D). Mean postop corneal cylinder was – 0,86±0,62 D (range 0 to – 1,5 D). All eyes had 0,7 or better UCVA, whereas 64,2% had 1,0. No eyes lost any lines of BCVA, and 32% of them gained one or two Snellen lines compared to preoperative values. Subjective patient’s quality of vision assessment was positive. 24% of the patients notice halos in mesopic and skotopic conditions in the first month after correction. Stability of the postoperative refraction was achieved from the first week follow-up. The best functional outcomes were reached within one month after treatment.

Conclusions:

The standard aspheric wavefront-optimized ablation profile provided good refractive outcomes in the treatment of high myopia and high myopia with astigmatism. Functional results were extremely satisfactory as well. FINANCIAL DISCLOSURE?: No