Clinical Effects Of Different Corneal Flap Thickness In Femto-Lasik Procedure
Published 2024 - 42nd Congress of the ESCRS
Reference: FP08.10 | Type: Free paper | DOI: 10.82333/yf1m-cr60
Authors: Luca Iacobelli 1 , Luigi Mosca* 2 , Luca Mosca 3 , Domenico Schiano Lomoriello 4
1Studi Oculistici Iacobelli,Rome,Italy, 2Ophthalmology,Policlinico Gemelli,Rome,Italy, 3GrupppoINI,Rome,Italy, 4Fondazione Bietti,Rome,Italy
Purpose
Our goal was to analyze and compare clinical outcomes of two types of corneal flap thickness in Visumax femtosecond laser-assisted stromal for situ keratomileusis (FS-LASIK)
Setting
VistaVision Eye Clinic-Rome
Methods
60 eyes of 30 patients underwent myopic Visumax FS-LASIK and depending on corneal flap thickness, they were divided into a group of 100-μm flap (30 eyes) and a group of 110-μm flap (30 eyes). The first group included patients with a reduced pre-operative central corneal thickness (CCT). Both groups had the same flap diameter and side-cut angle with a comparable pre-operative mean equivalent refractive error
Results
Both groups provided excellent quality of vision with no significant differences in terms of best natural visual acuity (BNVA) and residual refractive errors. A higher rate of opaque bubble layer (OBL) and of microstriae occurred in the first group (70% of the eyes respect to the 50% of the second group) with no influence on visual acuity
Conclusions
The slight higher incidence of microstriae observed in the 100-μm flap group was probably dued to the higher rates of opaque bubble layer (OBL) formation in this group respect to the 110-μm one, and a consequent more difficult flap-lifting procedure. Thicker CCT is reported as a risk factor for the development of OBL although in our study they didn’t cause any clinical consequences