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Incidence of intraoperative flap complications with 200 KHz femtosecond laser-assisted LASIK

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Session Details

Session Title: LASIK I

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

Paper Time: 15:14

Venue: Room A3, Podium 2

First Author: : M.Taechajongjintana THAILAND

Co Author(s): :    N. Wongpitoonpiya   J. Supokawate   M. Chongchareon   J. Duangpatra           

Abstract Details


To report the incidence of intraoperative flap complications following 200 KHz femtosecond laser-assisted laser in situ keratomileusis (femto-LASIK).


LASIK Center, Ophthalmology Department, Bangkok Metropolitan Administration General Hospital (Klang Hospital), Bangkok, Thailand.


From January 2016 to December 2017, patients undergone femto-LASIK were consecutively enrolled in this retrospective study. Flap creation was performed with the Wavelight FS-200 (Alcon Laboratories, Inc., Fort Worth, TX, USA). Femtosecond laser settings included raster scan pattern, spot/line separation 6.0/6.0 um, pulse repetition rate 200 KHz, pulse energy 0.6 uJ, and flap thickness 110 um. Excimer laser ablation was then performed with the Schwind Amaris 750S (Schwind eye-tech-solutions, Kleinostheim, Germany). Intraoperative complications during flap creation were recorded and described.


A total of 3343 eyes (1678 patients) were enrolled. The incidence of anterior chamber gas bubble was 1.05% (35 eyes), hard opaque bubble layer was 0.15% (5 eyes), suction loss was 0.15% (5 eyes), and vertical gas breakthrough was 0.15% (5 eyes). Incomplete flap cut was fortunately not found in our series.


Although an emerging evolution of femtosecond laser significantly improved a predictability of LASIK flap creation, specific complications due to the femtosecond laser were still inevitable. However, proper management can resolve these complications and the final visual outcome was not interfered.

Financial Disclosure:


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