Official ESCRS | European Society of Cataract & Refractive Surgeons
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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Outcome of photorefractive keratectomy vs laser-assisted in situ keratomileusis for myopia

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Session Details

Session Title: LASIK

Session Date/Time: Monday 12/09/2016 | 08:00-10:30

Paper Time: 08:12

Venue: Hall C3

First Author: : S.Holland CANADA

Co Author(s): :    D. Lin   S. Mosquera                 

Abstract Details


To compare the outcome of myopic photorefractive keratectomy (PRK) and laser assisted in-situ keratomileusis (LASIK) using two different laser platforms at the 12 month postoperatively.


Pacific Laser Eye Centre, Vancouver, BC, Canada


Retrospective case series. The outcomes of 446 myopic transepithelial PRK (TE-PRK) eyes performed with Schwind Amaris (SA) were compared to 1798 myopic LASIK eyes performed with Wavelight Allegretto (WA) at 12 month follow-up. Analysis divided into moderate ( ≤8.00D) and high myopia (≥8.00D). Refractive and visual comparisons were performed for spherical equivalent (SE), uncorrected visual acuity (UCVA), corrected distance visual acuity (CDVA) and safety (change of CDVA from baseline).


At one year, SE: +0.15±0.5D for PRK (n=446), -0.10±0.4D for LASIK (n=1779), p=0.0003 in both groups UCVA≥20/20 achieved by 84%(328eyes) and 47%(27eyes) in moderate and high myopia of PRK-SA versus 74%(1218 eyes) and 33%(52 eyes) in LASIK-WA (p=0.02); UCVA≥20/40 achieved by 99%(384eyes) with PRK-SA and 89%(51eyes) in moderate and high myopia vs. 98%(1610eyes) and 88%(140eyes) in LASIK-WA (p=0.1). Two eyes gained ≥2 lines of vision in high myopia PRK-SA vs. none with LASIK-WA. Only 2 eyes lost ≥2 lines both with high myopia LASIK-WA (NS). No re-treatments in PRK-SA, 1%(19eyes) and 5%(8 eyes) in moderate and high myopia of LASIK-WA.(p=0.1).


Uncorrected vision after myopic PRK with Schwind Amaris laser was significantly better than LASIK with Wavelight Allegretto for both moderate and high myopia at one year post-operatively with similar CDVA and safety. Surface ablation with trans epithelial PRK may be a better option than LASIK for moderate and extreme myopia avoiding issues such as post-LASIK ectasia.

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, ... receives consulting fees, retainer, or contract payments from a competing company

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