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Comparative OCT analysis of the morphology of the cap vs flap 3 months after SMILE and LASIK performed with the Visumax® femtosecond laser platform

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First Author: M.Teus SPAIN

Co Author(s):    J. Alió   J. Alió Del Barrio   A. Parafita   J. Gros   M. Garcia-Gonzalez        

Abstract Details

Purpose:

To compare the accuracy and homogeneity in flap and cap thickness 3 month after SMILE and LASIK, performed with the same Visumax® (Zeiss) femtosecond laser device

Setting:

Vissum Alicante, Spain

Methods:

Prospective, observational study. Anterior segment optical coherence tomography (AS-OCT) (MS39, CSO) analysis of the cap and flap thickness was performed 3 months after both SMILE and VisuLASIK performed to correct myopia. The same observer manually measured the central thickness and the homogeneity in thickness at 2mm nasal and temporal from the corneal vertex of both the cap and the flap

Results:

39 eyes treated with SMILE versus 39 eyes treated with VisuLASIK were included in the study. The difference between the achieved versus targeted cap and flap central thickness was 11.0±7.8 and 2.7±8.9 microns, respectively (P=0.0001). The cap and the flap thickness homogeneity at 2mm eccentricity was 9.4±7.7 and 6.2±8.9 microns in caps and flaps, respectively (P=0.04). No significant difference were found in either the refractive or visual outcomes between groups

Conclusions:

The Visumax® FS laser seems to be more precise, in terms of central thickness and thickness homogeneity, when cutting flaps for LASIK than caps for SMILE.

Financial Disclosure:

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