Incidence of Posterior Vitreous Detachment in Myopes UndergoingFemtosecond Laser-Assisted In-situ Keratomileusis Using a 200 kHzFemtosecond Laser System

Introduction: This is a Prospective non-randomized interventional clinical trial conducted to determine the incidence of posterior vitreous detachment (PVD) in myopes following femtosecond laser-assisted in-situ keratomileusis( FS-LASIK) using Wavelight FS200 (Alcon Laboratories Inc.). Methods: This prospective clinical trial was conducted on 30 eyes of 15 patients in the interval between June 2017 and March 2018. Patients who showed no evidence of preoperative PVD using dynamic B-scan ultrasound (US) underwent FS-LASIK using Alcon wavelight FS-200. Postoperative dynamic B-scan US was performed 3 weeks later to determine whether or not PVD will develop. Results: Only three eyes developed PVD postoperatively equivalent to an incidence of 10%. Conclusion: Incidence of PVD following FS-LASIK using Alcon wave light FS-200 is lower than that reported with other femtosecond laser systems with lower frequencies.