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Early clinical and wavefront outcomes of myopic wavefront-guided LASIK and photorefractive keratectomy (PRK) using a new generation aberrometer

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Session Details

Session Title: Photoablation, Cross-Linking and Intracorneal Ring Segment

Session Date/Time: Monday 07/09/2015 | 08:00-10:30

Paper Time: 09:42

Venue: Room 16

First Author: : Bosredon FRANCE

Co Author(s): :    D. Smadja   J. Tellouck   F. Lecomte   T. de Castro   D. Touboul        

Abstract Details


To evaluate the safety, efficacy and predictability of myopic wavefront-guided with both techniques, LASIK and PKR, using data derived from a new-generation of Hartmann-Shack aberrometer.


Bordeaux Hospital University, Refractive Surgery Department, France


This study includes 149 myopic eyes of 77 patients prospectively treated by wavefront-guided excimer laser with either PRK or LASIK procedure based on the preoperative screening evaluation: 104 eyes underwent a LASIK procedure and 45 eyes underwent a PRK. All eyes were treated using the S4 excimer laser and Fourier treatment tables generated from the iDesign wavefront system (Abbott Medical Optics). Mean spherical equivalent (MRSE), uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA) and percentage of eyes within 0.5D of the intended refraction were analyzed at 3months postoperatively.


Mean patient age was 30,6 ±9,9 years (22-59) and 30,2 ±7,7 years (21-57) respectively in LASIK and PRK group. Mean preoperative manifest refraction spherical equivalent (MRSE) was lower in PRK group than in LASIK group (p< 0.01) with -2,23 ± 1,31 D (-5; +1D) and -4,05 ± 1,62 D (-2; -6,5D), respectively. At 3 months postoperative, 100% and 95.5% of eyes were within 0.5D of emetropia, respectively for LASIK and PRK. In the LASIK group, postoperative MRSE was -0.16 ± 0.45 D, uncorrected visual acuity (UCVA) of 20/20 or better was achieved in 94.4% in the LASIK group. In the PRK group, postoperative MRSE was -0.04 ± 0.2 D with UCVA of 20/20 or better achieved in 95,5%.


The early postoperative clinical results of wavefront-guided LASIK and PRK for low to moderate myopia using the new generation S4IR excimer platform were safe, highly effective and predictable.

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