Interface morphology and gas production by a refractive 347 nm ultraviolet femtosecond laser: Comparison with established laser systems

Journal of Cataract and Refractive Surgery
Christian M HammerTheo Seiler

Abstract

To evaluate gas production and interface quality after refractive lenticule creation. A new ultraviolet (UV) 347 nm femtosecond laser was compared with the FS200 and the Visumax lasers. Department of Anatomy II, University of Erlangen-Nürnberg, Erlangen, Germany. Experimental study. Refractive lenticules were created in 52 porcine corneas with the UV laser (n = 20), the Visumax laser (n = 20), and a modified FS200 laser (n = 12). Twelve corneas in each laser group were fixed immediately after lenticule creation to entrap the gas produced. Lenticule extraction was omitted. From 16 other corneas (UV and Visumax lasers; n = 8 each) -5.0 diopter (D) and -10.0 D lenticules were extracted. On lenticule extraction, a flap was created and lifted. In 12 additional corneas, a flap was cut using the FS200 laser and lifted afterward; laser in situ keratomileusis was performed on 8 of these samples. The corneas were processed for light microscopy (gas bubble 2-dimensional morphometry) and scanning electron microscopy (interface quality). The Visumax generated approximately one half as much gas as the FS200. The UV laser undercut the Visumax by another 50%. The interfaces created by the FS200 appeared smooth and without irregularities. The o...Continue Reading

References

Apr 1, 1989·Archives of Ophthalmology·D SternJ G Fujimoto
Aug 8, 2002·Current Opinion in Ophthalmology·Alan Sugar
Jul 29, 2008·Journal of Cataract and Refractive Surgery·Omid Kermani, Uwe Oberheide
May 13, 2009·Journal of Refractive Surgery·Ronan Le HarzicChristof Dnitzky
Oct 20, 2009·Journal of Refractive Surgery·Fabricio Witzel de MedeirosSteven E Wilson
Mar 6, 2010·Journal of Cataract and Refractive Surgery·R Krishna SankaJ Bradley Randleman
Dec 25, 2010·Journal of Cataract and Refractive Surgery·Rupal ShahSayantan Sengupta
Jan 18, 2011·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Kathleen S KunertJens Heichel
Feb 12, 2011·Ophthalmic Research·Jens HeichelKathleen S Kunert
Aug 20, 2014·Journal of Cataract and Refractive Surgery·Marcus BlumWalter Sekundo
Jul 21, 2015·Journal of Cataract and Refractive Surgery·Christian M HammerJohannes Menzel-Severing
Aug 1, 2015·Cornea·Arturo Ramirez-MirandaEnrique O Graue-Hernandez
Sep 10, 2015·Journal of Refractive Surgery·Romain CourtinDamien Gatinel
Nov 10, 2017·Journal of Cataract and Refractive Surgery·Christian M HammerJohannes Menzel-Severing

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Citations

Oct 28, 2019·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Juan Gros-OteroMiguel Teus
Dec 15, 2020·Journal of Cataract and Refractive Surgery·Kelvin H WanDennis S C Lam

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