DR. SMITH SUTE

DR. SHEETAL BRAR, DR. SRI GANESH

Abstract

Purpose: To compare the long-term safety, efficacy, predictability, and refractive stability following SMILE versus SMILE combined with accelerated cross linking (SMILE Xtra), and study the regression patterns following them.

Methods: Retrospective study included age and refractive error matched groups of 54 eyes each of SMILE and SMILE Xtra treated for normal and borderline cases of myopia/ myopic astigmatism respectively, based upon certain pre-defined topographic features and risk factors. The mean post-op follow-up for the SMILE group was 22.18± 10.41 months and SMILE Xtra group was 21.81± 10.19 months.

Results:At the end of follow-up, 94 % eyes maintained an UDVA of 20/20 or better in both the groups.Safety and Efficacy indices for SMILE group were 1.004 and 0.99 and for the SMILE XTRA group were 1.036 and 1.006.

Conclusion: Both SMILE and SMILE Xtra resulted in comparable outcomes. Combination of prophylactic CXL with SMILE did not result in a hyperopic shift in the long-term.