Twelve-Month Outcomes Of A New Refractive Lenticular Extraction Procedure—Smartsight By Schwind Eye-Tech-Solutions

To evaluate the 12-month refractive and visual outcomes of Small Incision Guided Human-cornea Treatment (SmartSight®, SCHWIND eye-tech-solutions, Kleinostheim, Germany) in the treatment of myopia corrections with low to moderate astigmatism with the use of a new femtosecond laser system.

Case series.

1082 eyes of 541 patients consecutively treated with SmartSight lenticule extraction were assessed. The mean age of the patients was 24.5±3.9 years at the time of treatment with a mean spherical equivalent refraction of -4.5±1.78D and mean astigmatism of 1.23±0.88D. Monocular corrected distance visual acuity (CDVA), uncorrected distance visual acuity (UDVA) were assessed pre- and post-operatively. Refractive changes have been determined in terms of changes in refraction, as well as changes in keratometric readings. The changes in central epithelial thickness have been determined.

At twelve months post-operatively, mean UDVA was 20/21±1.7. Spherical equivalent showed a residual refraction of -0.28±0.51D with refractive astigmatism of 0.43±0.18D postoperatively. There was a slight decrease of -0.15 Snellen lines at 12-months follow-up. The same correction was determined using changes in refraction, as well as changes in keratometric readings.  Spherical equivalent correction within ±0.50D was achieved in 923 eyes (85.3%), and cylindrical correction in 1001 (92.5%). Preoperative corrected distance visual acuity (CDVA) was 20/20 or better in 1038 eyes (96%), and postoperative uncorrected (UDVA) was 20/20 or better in 1006 eyes (93%). No eye had lost two or more Snellen lines of CDVA.

Myopic astigmatism correction with SmartSight provided good results for efficacy, safety, predictability, and visual outcomes at the twelve months of follow up.