Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Influence of corneal cap parameters during SMILE operation on functional results in patients with myopia and complex myopic astigmatism

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Session Details

Session Title: Presented Poster Session: Femtosecond-Assisted Refractive Surgery

Session Date/Time: Saturday 10/09/2016 | 09:30-11:00

Paper Time: 10:20

Venue: Poster Village: Pod 2

First Author: : S.Rebrikov RUSSIA

Co Author(s): :    O. Kostin   A. Ovchinnikov   A. Stepanov        

Abstract Details


To perform a comparative estimation of refraction, uncorrected (UCVA) and corrected (BCVA) visual acuity in patients with myopia and complex myopic astigmatism after SMILE operation in expert mode with corneal cap thickness of 120 and 60 microns.


IRTC Eye Microsurgery Ekaterinburg Center, Ekaterinburg, Russia.


Two groups of patients, 13 persons (26 eyes) with myopia and complex myopic astigmatism in each were examined. SMILE operation with VisuMax femtosecond laser (Carl Zeiss Meditec AG, Germany) was performed; in group 1 corneal cap thickness was 120 microns, in group 2 – 160 microns. Expert mode with track distance of 3.5 microns and spot distance of 3.5 microns was used. A 8- mm corneal cap and a 7- mm corneal lenticule were formed with subsequent extraction of the lenticule. Refraction, UCVA and BCVA were measured before SMILE, at day 1, 1 month and 3 months after the operation.


In group 1 UCVA before SMILE was 0.05±0.09; during post-op follow-up 0.89±0.13; 0.93±0.11; 0.94±0.1. In group 2 UCVA before SMILE was 0.06±0.04; during post-op follow-up 0.61±0.16; 0.82±0.17; 0.84±0.15; the difference was statistically significant (p<0.05). Spherical equivalent before and after SMILE was not different between the groups. In group 1 BCVA before SMILE was 0.97±0.1; at post-op follow up 0.92±0.11; 0.97±0.09; 0.97±0.1. In group 2 BCVA before SMILE was 1.0±0.01; during post-op follow-up 0.65±0.15; 0.89±0.14; 0.97±0.09. BCVA was significantly lower in group 2 at day1 and month 1 after the operation (p<0.05).


Forming of corneal cap with the thickness of 160 microns during SMILE operation in expert mode extends rehabilitation period and slows down the recovery of visual functions compared to 120 microns cap in patients with myopia and complex myopic astigmatism.

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