Official ESCRS | European Society of Cataract & Refractive Surgeons
Vienna 2018 Delegate Registration Programme Exhibition Virtual Exhibition Satellites 2018 Survey


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Myopia correction with transepithelial photorefractive keratectomy vs microkeratome and femtosecond-assisted laser in situ keratomileusis: two year case-matched analysis

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Session Details

Session Title: LASIK I

Session Date/Time: Sunday 23/09/2018 | 14:00-16:00

Paper Time: 14:18

Venue: Room A3, Podium 2

First Author: : M.Arbelaez OMAN

Co Author(s): :    J. Arbelaez   S. Arba Mosquera                 

Abstract Details


To compare visual, refractive, and wavefront aberration outcomes of single-transepithelial photorefractive keratectomy (T-PRK), microkeratome-assisted laser in situ keratomileusis (M-LASIK) and femtosecond-assisted laser in situ keratomileusis (F-LASIK) after excimer laser ablation with an aspheric ablation profile.


Muscat Eye Laser Center, Muscat, Sultanate of Oman.


A retrospective analysis of 1488 eyes of 1251 patients with myopia up to -10 diopters (D) (220 eyes, T-PRK; 506 eyes M-LASIK with the Carriazo-Pendular microkeratome; and 762 eyes F-LASIK with the Ziemer LDV Z-series) was conducted. Surgery was performed using the SCHWIND AMARIS 1050RS Aberration-Free aspheric ablation profile. The clinical outcomes evaluated were predictability, refractive outcomes, and visual acuity. The Student t test and chi-square test were used for statistical analysis.


Groups were comparable preoperative except for higher myopia, lower UDVA and thinner pachymetry in T-PRK. From 3m postoperative, all were comparable for uncorrected and corrected distance visual acuity, efficacy index, safety, and refractive predictability, whereas before 1m postoperative T-PRK UDVA was lower compared to M-LASIK and F-LASIK. All demonstrated improved contrast sensitivity. All demonstrated significant change in spherical aberration. The induced spherical aberration was 0.040 µm/D in T-PRK group, 0.031 µm/D in M-LASIK group, and 0.028 µm/D in F-LASIK group. Other higher order aberrations didn't show significant change. The change in higher order aberrations was not significantly different in groups.


The aspheric ablation profile is safe, effective, and predictable and produces similar visual and refractive results with three different surgical approaches of T-PRK, M-LASIK, and F-LASIK. The ablation profile demonstrated a low induction rate of higher order aberrations regardless of surgical approach. T-PRK outcomes from 3-months postoperatively were equivalent to those of M-LASIK and F-LASIK. T-PRK was efficacious and safe; however, the procedure had a longer recovery time than M-LASIK and F-LASIK.

Financial Disclosure:

... is employed by a for-profit company with an interest in the subject of the presentation, ... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented

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