Comparative Study of Risk Factors for Opaque Bubble Layer Formation in Femtosecond-Laser Assisted LASIK

Abstract

he femtosecond laser (FSL) has revolutionized corneal and refractive surgery. It enables the creation of precise flaps with uniform thickness across the flap. The incidence of flap complications such as button-hole, epithelial abrasion, incomplete flap, free cap, and irregular cuts are substantially reduced with FSLs. However, there are some complications specific to FSLs such as OBL. Our study aimed to study risk factors responsible for OBL formation in FSL-assisted LASIK. This retrospective study was conducted on 200 eyes of 101 patients who were eligible for FSL-assisted LASIK using FS200 laser machine in the period from January 2015 to January 2017. One hundred eyes had OBL and 100 eyes did not develop OBL.