Incidence of post SMILE ectasia in patients with normal and borderline topography from a high volume refractive surgery center from India

Session Details

Session Title: Refractive
Session Date/Time: Friday 21/02/2020 | 08:15-10:10
Paper Time: 09:48
Venue: Fes 1.

First Author: S.Ganesh INDIA
Co Author(s): S. Brar                 

Abstract Details

Purpose:

To report the incidence of ectasia in eyes with normal and borderline topography undergoing SMILE and SMILE Xtra (SMILE combined with simultaneous crosslinking) in a high volume tertiary refractive surgery center from India.

Setting:

Nethradhama Superspeciality Eye Hospital, Bangalore

Methods:

In this retrospective study, corneal topography of all patients who underwent ReLEx SMILE or ReLEx SMILE Xtra from January 2015 to June 2018 were analysed. The corneal topographies were categorised into normal and borderline topography based on criteria such as age, corneal thickness, residual bed thickness, I/S asymmetry and Belin Ambrasio display.A total of 4630 eyes were analysed, 698 eyes had borderline and 3932 eyes had normal topography.

Results:

In borderline eyes, 334 eyes underwent SMILE Xtra and 364 eyes underwent only SMILE. Incidence of corneal ectasia in the borderline group was 1.16%, as 5 / 698 eyes in this group reported ectasia at a mean duration of 21.3 months (1.7 yrs). All the 5 ectasia eyes had undergone SMILE, however borderline eyes which had undergone SMILE Xtra (334 eyes) remained stable and did not show any evidence of ectasia (0%). Also 3932 normal topography eyes which underwent SMILE showed no ectasia (0%).Overall incidence of ectasia in eyes undergoing SMILE was 0.17% in 3 yrs duration study.

Conclusions:

Results of this study indicate that SMILE combined with simultaneous crosslinking (SMILE Xtra) may be a valid option in treating borderline corneas to prevent future ectasia.

Financial Disclosure:

... receives consulting fees, retainer, or contract payments from a competing company