Comparison Of Epithelial And Total Corneal Higher Order Aberrations Following Smile Versus Prk
Published 2022 - 40th Congress of the ESCRS
Reference: FPM03.06 | Type: Free paper | DOI: 10.82333/qn3e-td67
Authors: Shadwala Bharti* 1 , Sri Ganesh 1 , Sheetal Brar 1
1Phaco-Refractive Department,Nethradhama Super Speciality Eye Hospital, Bangalore, India,Bangalore,India
Purpose
Setting
Methods
This prospective study included age and spherical equivalent (SE) matched eyes with low and moderate myopia [SE up to -6.00D) undergoing SMILE or PRK. In addition to visual acuity and refraction, total corneal and epithelial HOA, coma and spherical aberration (SA) were measured using OCT based tomographer (MS-39, CSO, Italy) before and 3 months after surgery.
Results
A total of 60 myopic eyes (n= 30 eyes in each group) were enrolled. At baseline, the differences in uncorrected and corrected visual acuity were statistically non-significant between the subgroups of surgical method (all p>0.05). At 3 months, coma and total epithelial HOA were significantly less in the SMILE group (p=0.04, p=0.0001 respectively), while, epithelial SA was non-significant in the groups (p=0.414). For the total (epithelial and stromal) HOA, at 3 months, SA was significantly less in SMILE group (p=0.03), while others were non-significant (all p>0.05).
Conclusions
In correction of low to moderate myopia, SMILE has better results in inducing lesser total and epithelial HOAs as compared to PRK.
Financial Disclosure : Dr Sri Ganesh and Dr Sheetal Brar are consultants for Carl Zeiss Meditec.