3 MONTHS CLINICAL OUTCOMES FOLLOWING LENTICULE EXTRACTION USING THE ATOS FEMTOSECOND LASER EQUIPPED WITH AN ADVANCED EYE-TRACKER IN CASES OF MYOPIA OR MYOPIC ASTIGMATISM

To assess the safety, efficacy, and refractive outcomes of lenticule extraction in myopic patients, both with and without astigmatism, employing a femtosecond laser system equipped with an eye-tracker for precise centration and cyclotorsion compensation.

Sophia Puijastuti, MD, Jakarta, Indonesia

A retrospective analysis was conducted on 100 eyes from 55 patients, with a mean age of 27.4±7.8 years (range: 18–45 years), who underwent lenticule extraction treatments using the SmartSight method with the SCHWIND ATOS femtosecond laser. The preop SEQ was -5.65±1.66D [range -2.38 to -10.63D] and the cylinder was ≤3.75D with a mean optical zone of 6.3±0.3mm [range 5.8 to 7.0mm]. The three-month follow-up included a comprehensive assessment of safety, efficacy, and refractive outcomes, focusing on spherical equivalent (SEQ) and cylinder parameters in all cases.

The study comprises 100 eyes. Three months postop the mean SEQ refraction was -0.04±0.17D (range up to -1.25D) and the mean cylinder was -0.02±0.10D (range up to -0.50). The uncorrected distance visual acuity (UDVA) was the same as or better than the CDVA in 96% of the cases. The mean efficacy index was 1.09±0.16 and the mean safety index was 1.10±0.13. The residual astigmatism was 0.25D or less in 97% of all patients and all eyes were within ±0.50D. The Target Induced Astigmatism and the Surgical Induced Astigmatism were in both cases 1.10±0.85.

The data from the 3-month follow-up myopic correction reveal rapid visual recovery and a precise postoperative refraction. SmartSight emerges as an effective and safe procedure for addressing myopia and myopic astigmatism, particularly notable for its efficacy in utilizing large optical zones.