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; christoph.wvm{at}gmail.com
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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
Abstract
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.
Footnotes
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Competing interests CWvM, RK, JS, MM and CPL none. CW and CD are employees of WaveLight GmbH, Erlangen, Germany.
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Patient consent Obtained.
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Ethics approval Ethics approval was obtained from the local ethics board.
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Provenance and peer review Not commissioned; externally peer reviewed.
