上海五官科医院-Comparison of corneal deformation parameters after SMILE, LASEK, and femtosecond laser-assistedLASIK.pdf

O R I G I N A L A R T I C L E Comparison of Corneal Deformation Parameters After SMILE, LASEK, and Femtosecond Laser-Assisted LASIK Yang Shen, MD; Zhi Chen, MD; Michael C. Knorz, MD; Meiyan Li, MD; Jing Zhao, MD; Xingtao Zhou, MD, PhD orneal biomechanical properties have been a focal ABSTRACT C point of research not only because of the influence on intraocular pressure assessment but also for assess- PURPOSE: To investigate the differences in corneal ing the influence on corneal structural integrity after refrac- deformation parameters after femtosecond laser small tive surgery.1-3 Small incision lenticule extraction (SMILE) incision lenticule extraction (SMILE), laser-assisted sub- epithelial keratomileusis (LASEK), and femtosecond is a flapless, minimally invasive, and all-femtosecond laser laser-assisted LASIK (FS-LASIK). refractive procedure that can correct myopia without creat- 4 ing a corneal flap and thus avoid the flap-related complica- METHODS: In this retrospective study, 17 eyes of 17 tions that may occur after femtosecond laser-assisted LASIK patients after SMILE, 18 eyes of 18 patients after (FS-LASIK).5,6 Laser-assisted subepithelial keratomileusis LASEK, and 17 eyes of 17 patients after FS-LASIK were (LASEK) does not create a flap and therefore corneal struc- included. Corneal deformation parameters were mea- tural integrity is less affected than it is with