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Proceedings Paper • Open Access

Femtosecond subsurface photodisruption in scattering human tissues using long infrared wavelengths
Author(s): Zachary S. Sacks; Ronald M. Kurtz; Tibor Juhasz; Gerard A. Mourou

Paper Abstract

Approximately 5 million people worldwide are blind due to complications from glaucoma, and an estimated 105 million have the disease. Current surgical techniques often fail due to scarring that is associated with disruption of the ocular surface tissues using conventional surgical methods. Demonstrated in the transparent cornea, femtosecond lasers can create a highly precise incision beneath the surface of a tissue. Since sclera is highly scattering with one micron light, the same wavelength used in cornea cannot be focused to the small spot necessary for photodisruption far beneath the surface of sclera. We now demonstrate completely subsurface incisions in human sclera by selecting a laser wavelength that is focusable beneath the surface, namely 1700 nm. Similar techniques may be used in other translucent tissues such as skin. Subsurface femtosecond photodisruption may be a useful for in vivo surgical technique to perform a completely subsurface surgery.

Paper Details

Date Published: 4 May 2001
PDF: 14 pages
Proc. SPIE 4241, Saratov Fall Meeting 2000: Optical Technologies in Biophysics and Medicine II, (4 May 2001); doi: 10.1117/12.431510
Show Author Affiliations
Zachary S. Sacks, Univ. of Michigan (United States)
Ronald M. Kurtz, Univ. of Michigan and Kellogg Eye Ctr./Univ. of Michigan (United States)
Tibor Juhasz, Univ. of Michigan and Kellogg Eye Ctr./Univ. of Michigan (United States)
Gerard A. Mourou, Univ. of Michigan (United States)


Published in SPIE Proceedings Vol. 4241:
Saratov Fall Meeting 2000: Optical Technologies in Biophysics and Medicine II
Valery V. Tuchin, Editor(s)

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