First clinical results with a new 200 kHz femtosecond laser system
- Christoph Winkler von Mohrenfels1,
- Ramin Khoramnia1,
- Josefina Salgado2,
- Christian Wüllner3,
- Christof Donitzky3,
- Mathias Maier1,
- Chris P Lohmann1
- 1Augenklinik Klinikum rechts der Isar, Technische Universität München, Munich, Germany
- 2Augenklinik, Julius-Maximilians-Universität, Würzburg, Germany
- 3WaveLight GmbH, Erlangen, Germany
- Correspondence to Dr Christoph Winkler von Mohrenfels, Technische Universität München, Ismaningerstrasse 22, Munich 81675, Germany;
Contributors CWvM, conception and design, analysis and interpretation of data; CW, RK, JS, analysis and interpretation of data; MM, CD drafting the article or revising it critically for important intellectual content; CPL, final approval of the version to be published.
- Accepted 12 November 2011
- Published Online First 16 December 2011
Background The aim of this study was to perform the first femtosecond laser cuts with a new prototype femtosecond laser, in vivo and to evaluate its safety, stability and efficacy.
Methods A LASIK cut was performed with a prototype 200 kHz femtosecond laser in both eyes of nine patients and one eye of two patients (20 individual eyes in total). A complete ophthalmic examination was performed preoperatively and postoperatively at 1, 3, 6 and 12 months after the procedure.
Results In the pilot series of 20 eyes, flap creation was possible in each case. The mean preoperative manifest refractive spherical equivalent was À−4.22 D (SD±61.22 D). The postoperative spherical equivalent refraction was À−0.1 D (SD±60.26 D) at 1 month, À−0.22 D (SD±60.24 D) at 3 months and À−0.15 D (SD±60.16 D) 12 months after surgery.
Conclusions Femto-LASIK with this new laser system showed high levels of safety, stability and efficacy without any enhancement.
Clinical trials registration http://www.dimdi.de. DE/CA126/AP4/3332/27/09. Bfam registration 09/03/2009, DE/CA126.
Competing interests CWvM, RK, JS, MM and CPL none. CW and CD are employees of WaveLight GmbH, Erlangen, Germany.
Patient consent Obtained.
Ethics approval Ethics approval was obtained from the local ethics board.
Provenance and peer review Not commissioned; externally peer reviewed.