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Ocular optical quality after small incision lenticule extraction surgery to correct myopia

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Session Details

Session Title: SMILE, LASIK and Re-treatment

Session Date/Time: Monday 09/10/2017 | 14:30-16:00

Paper Time: 14:48

Venue: Room 2.1

First Author: : J.Alio SPAIN

Co Author(s): :    A. Plaza-Puche   J. Alio del Barrio   M. Canto-Cerdan   P. Yebana           

Abstract Details


To evaluate visual outcomes and ocular optical quality after small incision lenticule extraction surgery (SMILE) to correct myopia.


Vissum Corporation and Miguel Hernández University, Alicante, Spain


This prospective consecutive observational case series comprised 24 eyes of 12 patients who underwent SMILE to correct myopia. Visual outcomes, refractive status, corneal topography and aberrometry, ocular aberrations with pyramidal aberrometer and ocular optical quality with the third generation of the Optical Quality Analysis System (OQAS) were evaluated after surgery.


Mean preoperative spherical equivalent (SE) was -6.43±1.85D and mean postoperative SE was -0.36±0.61D, (p<0.01). 75% and 92% of eyes had a spherical equivalent within ±0.50D and ±1.00D, respectively. Mean postoperative uncorrected visual acuity (UVA) was 0.05 LogMAR. The efficacy index was 0.87 and the safety index was 1.02. Preoperative corneal root mean square (RMS) high order aberrations (HOA) was 0.36±0.11µm and postoperative RMS HOA was 0.72±0.25µm (p<0.01). Mean postoperative ocular Strehl Ratio was 0.182±0.052 and mean modulation transfer function (MTF) cut-off point was 33.02±11.09 cycles per degree (cpd).


The SMILE surgery is an effective and safe technique to correct myopia and provides adequate postoperative ocular optical quality.

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