Six-Month Outcomes Of Klex

To evaluate the 6-month refractive and visual outcomes of KLEx (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.

100 eyes of 50 patients consecutively treated with KLEx  (SmartSight lenticule extraction) were assessed. The mean age of the patients was 33±5 years at the time of treatment with a mean spherical equivalent refraction of -3.57±1.01D and mean astigmatism of 0.86±1.09D. 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 six months post-operatively, mean UDVA was 0.00±0.09 LogMAR. Spherical equivalent showed a residual refraction of -0.06±0.20D with refractive astigmatism of -0.11±0.23D postoperatively. There was a slight decrease of -0.1 Snellen lines at 6-months follow-up. The central epithelial thickness increased by +3±2µm. Spherical equivalent correction within ±0.50D was achieved in 100 eyes (100%), and cylindrical correction in 94 (94%). Preoperative corrected distance visual acuity (CDVA) was 20/20 or better in 100 eyes (100%), and postoperative uncorrected (UDVA) was 20/20 or better in 86 eyes (86%). No eye had lost two or more Snellen lines of CDVA.