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Proceedings Paper

Investigation of ultrashort pulse laser ablation of the cornea and hydrogels for eye microsurgery
Author(s): Guillaume Girard; Sheng Zhou; Nicolas Bigaouette; Isabelle Brunette; Mohamed Chaker; Lucie Germain; Pierre-Luc Lavertu; Francois Martin; Gilles Olivie; Tsuneyuki Ozaki; Mireille Parent; Francois Vidal; Jean-Claude Kieffer
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Paper Abstract

In 1985, the discovery of chirped-pulse amplification (CPA) by G. Mourou and D. Strickland led to ultrashort and high energy pulse lasers. Since energy deposition of ultrashort pulses occurs with limited heat transfer and damages, potential applications of femtosecond lasers to corneal surgery are very promising. By focusing a femtosecond laser on a solid surface, matter is ablated and this process is strongly laser parameter dependent. The goal of the experiment presented here was to measure the femtosecond laser ablation thresholds for different corneal layers and hydrogels. Experiments have been realized with the INRS Ti:Sapphire laser (60fs-400ps, 800nm, 10Hz) and they constitute an initial step toward the development of a new type of high precision surgical tool for corneal microsurgery. Results will be compared to theoretical calculation for light-tissue interaction and propagation using the hydrodynamic code developed at INRS. Grant Identification: NSERC, FRSQ Research in Vision Network and China Scholarship 22836034.

Paper Details

Date Published: 9 December 2004
PDF: 12 pages
Proc. SPIE 5578, Photonics North 2004: Photonic Applications in Astronomy, Biomedicine, Imaging, Materials Processing, and Education, (9 December 2004); doi: 10.1117/12.567111
Show Author Affiliations
Guillaume Girard, Institut National de la Recherche Scientifique (Canada)
Sheng Zhou, Univ. de Montreal (Canada)
JiangXi Provincial People's Hospital (China)
Nicolas Bigaouette, Institut National de la Recherche Scientifique (Canada)
Isabelle Brunette, Univ. de Montreal (Canada)
Mohamed Chaker, Institut National de la Recherche Scientifique (Canada)
Lucie Germain, Ctr. Hospitalier Affilie Universitaire (Canada)
Pierre-Luc Lavertu, Institut National de la Recherche Scientifique (Canada)
Francois Martin, Institut National de la Recherche Scientifique (Canada)
Gilles Olivie, Institut National de la Recherche Scientifique (Canada)
Tsuneyuki Ozaki, Institut National de la Recherche Scientifique (Canada)
Mireille Parent, Univ. de Montreal (Canada)
Francois Vidal, Institut National de la Recherche Scientifique (Canada)
Jean-Claude Kieffer, Institut National de la Recherche Scientifique (Canada)


Published in SPIE Proceedings Vol. 5578:
Photonics North 2004: Photonic Applications in Astronomy, Biomedicine, Imaging, Materials Processing, and Education
Marc Nantel; Glen Herriot; Graham H. McKinnon; Leonard MacEachern; Robert A. Weersink; Rejean Munger; Andrew Ridsdale, Editor(s)

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