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Proceedings Paper

Laser welding of corneal tissue: preliminary experiences using 810nm and 1950nm diode lasers
Author(s): Giuseppe Trabucchi; Pier Giorgio Gobbi; Rosario Brancato; Francesco Carones; Antonio Giordano Resti; Anita Jansen; Roberto Pini
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Paper Abstract

Laser welding of corneal incisions was performed using two different diode laser wavelengths. Tissue fusion was attempted both with direct absorption of radiation at 1950 nm radiation and with ICG dye-enhanced technique at 810 nm. Thirty deep (not full thickness) corneal incisions of 15 fresh-enucleated porcine eyes were treated. Semiconductor diode lasers emitting in continuous wave at 1950 nm and at 810 nm were used. Both were coupled to an optic fiber handpiece. Wound samples were explanted on day 0 after treatment for histological evaluation. The group of corneal wounds treated with the ICG-enhanced technique revealed tissue welding in 70% of treated wounds. Using 1950 nm tissue fusion was observed in 50% of treated wounds. Macroscopic evaluation revealed a pronounced thermal damage of the epithelium in the samples treated with 1950 nm radiation. Wound closures obtained using 1950 nm were characterized by superficial welding of corneal layers. (Abstract truncated.)

Paper Details

Date Published: 19 January 1996
PDF: 8 pages
Proc. SPIE 2623, Medical Applications of Lasers III, (19 January 1996); doi: 10.1117/12.230353
Show Author Affiliations
Giuseppe Trabucchi, Univ. of Milan (Italy)
Pier Giorgio Gobbi, Scientific Institute Hospital San Rafaele (Italy)
Rosario Brancato, Univ. of Milan (Italy)
Francesco Carones, Univ. Milano and Scientific Institute Hospital San Rafaele (Italy)
Antonio Giordano Resti, Univ. of Milan (Italy)
Anita Jansen, Univ. of Milan (Italy)
Roberto Pini, Quantom Electronic Institute/CNR (Italy)


Published in SPIE Proceedings Vol. 2623:
Medical Applications of Lasers III
Stephen G. Bown; Herbert J. Geschwind; Raimund Hibst; Frederic Laffitte; Giulio Maira; Roberto Pini; Hans-Dieter Reidenbach; Hans H. Scherer; Pasquale Spinelli, Editor(s)

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