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Vienna 2018 Delegate Registration Programme Exhibition Virtual Exhibition Satellites 2018 Survey


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Refractive lenticule extraction: Canadian series 18 month outcomes

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Session Details

Session Title: SMILE

Session Date/Time: Sunday 23/09/2018 | 16:30-18:00

Paper Time: 16:30

Venue: Room A3, Podium 2

First Author: : A.Aguayo CANADA

Co Author(s): :    C. Kranemann                    

Abstract Details


To determine the stability and consistency of outcomes of the Small Incision Lenticule Extraction (SMILE) over 1 year follow up and identify nomogram variations across a range of myopic refractive errors.


Clearview Institute Refractive Clinic


The initial consecutive first 170 patients undergoing the SMILE procedure after its approval were followed for 18 months.They underwent a cycloplegic refraction/toatl eye and corneal wavefronts/corneal topography/HD Analyzer/Tear Osmolality preoperatively as well as postoperatively at mongth 1, 3, 6, 12 and 18. The patients were divided into grophs ! -1.25 to -3, B -3.25 to -6.75 and C greater than -7. Each group was subdivided into clinders up to -2 and greater than -2. The data were analyzed with the ASSORT program.


332 eyes of 170 patients were analyzed. The mean uncorrected visual acuity was 20/17 at month 18 and no eyes lost a line of BCVA. Myopia ranging from -1.5 to -13. and cylinder from .5 to 5 were treated. The nomogram adjustments varied across the groups and were of a higher percentage value for the lower refractive errors with an absolute value of 45 for Group A, 55 for Group B and 8 for Group C. The mean residual cylinder was 0.4 diopters. 8/332 eyes required a retreatment.. The mean topographic change after month 1 was 0.35 diopters (NS).


Refractive Lenticule Extraction appears to yield stable and predictable results. Nomogram adjustments will have to be titrated according the the specific refractive error. The retreatment rates appear to be low.

Financial Disclosure:


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