4 May 2001 Femtosecond subsurface photodisruption in scattering human tissues using long infrared wavelengths
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Proceedings Volume 4241, Saratov Fall Meeting 2000: Optical Technologies in Biophysics and Medicine II; (2001); doi: 10.1117/12.431510
Event: Saratov Fall Meeting 2000, 2001, Saratov, Russian Federation
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.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zachary S. Sacks, Ronald M. Kurtz, Tibor Juhasz, Gerard A. Mourou, "Femtosecond subsurface photodisruption in scattering human tissues using long infrared wavelengths", Proc. SPIE 4241, Saratov Fall Meeting 2000: Optical Technologies in Biophysics and Medicine II, (4 May 2001); doi: 10.1117/12.431510; https://doi.org/10.1117/12.431510
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KEYWORDS
Tissues

Sclera

Natural surfaces

Femtosecond phenomena

Scattering

Surgery

Cornea

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