Clinical Outcomes After Lenticule Extraction Using A Femtosecond Laser With A Sophisticated Eye-Tracker.

To evaluate the safety, efficacy, and refractive outcomes in lenticule extraction for myopic patients with and without astigmatism using a femtosecond laser system with an eye-tracker for centration and cyclotorsion compensation.

Medipolis Eye Center

Boomsesteenweg 223

2610 Antwerpen

Belgium

46 eyes from 23 patients at a mean age of 31±4.7 years [range 22 – 41 years] with 1-month follow up were analysed retrospectively analysed. Lenticule extraction treatments were performed with the SmartSight treatment method of the SCHWIND ATOS femtosecond laser. In all cases, the safety, efficacy, and refractive outcomes in terms of the SEQ and cylinder have been analysed.

The study comprises 46 eyes. Preoperatively the mean attempted spherical equivalent SEQ correction was -3.85±0.86D (range -1.88 to -6.13) and the cylinder was ≤2,5D. One month postop the mean SEQ refraction was -0.06±0.21D (range -0.75 to 0.50D) and the mean cylinder was -0.03±0.12D (range -0.50 to 0.00D). The uncorrected distance visual acuity (UDVA) was the same or better than the CDVA in 92% of the cases. The mean efficacy index was 0.93 and the mean safety index was 0.96. The angle of error was ±5 degrees in 93% and ±15 degrees in 100% of the cases. The residual astigmatism was 0,5D or less in 96% and less 1,0D or less in all patients.

Lenticule extraction with the SmartSight treatment method for the correction of myopia or myopic astigmatism was safe and effective and the learning curve was steep. Due to the precise refractive outcome no target adjustment was performed.