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Proceedings Paper

YAG:Er laser device for microsurgery treatment of a human lens cataract
Author(s): Vladislav A. Kamensky; Valentin M. Gelikonov; Grigory V. Gelikonov; Felix I. Feldchtein; Alexander M. Sergeev; Kirill I. Pravdenko; Nikolai Artemiev; Nikita M. Bityurin; I. V. Skripachev; G. E. Snopatin
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Paper Abstract

We have designed a laser complex which is a combination of a YAG:Er laser operating in the free-running mode, a radiation delivery system based on a chalcogenide fiber with uniquely high damage threshold, and a diagnostic optical coherent tomography (OCT) device for in situ monitoring of surface layers of the tissue under treatment. A flexible chalcogenide glass multimode fiber operates with pulse energy 150 mJ at a repetition rate of 3 Hz. Neither degradation nor laser damage were observed after transmission of 104 laser pulses through the fiber delivery instrument. This complex was employed to study the effect of YAG:Er laser radiation on a cataract-suffered human lens. The laser ablation process has been monitored by OCT. During the lens treatment the image of ablation crater and inner layers with a scanning depth of several millimeters and spatial resolution of 15 micrometers was available. The kinetics of pulse-to-pulse ablation crater growth a well as of the adjacent thermally damaged zone formation were investigated.

Paper Details

Date Published: 2 April 1997
PDF: 5 pages
Proc. SPIE 3091, Laser Applications Engineering (LAE-96), (2 April 1997); doi: 10.1117/12.271785
Show Author Affiliations
Vladislav A. Kamensky, Institute of Applied Physics (Russia)
Valentin M. Gelikonov, Institute of Applied Physics (Russia)
Grigory V. Gelikonov, Institute of Applied Physics (Russia)
Felix I. Feldchtein, Institute of Applied Physics (Russia)
Alexander M. Sergeev, Institute of Applied Physics (Russia)
Kirill I. Pravdenko, Institute of Applied Physics (Russia)
Nikolai Artemiev, Institute of Applied Physics (Russia)
Nikita M. Bityurin, Institute of Applied Physics (Russia)
I. V. Skripachev, Institute of Chemistry of High-Purity Substances (Russia)
G. E. Snopatin, Institute of Chemistry of High-Purity Substances (Russia)


Published in SPIE Proceedings Vol. 3091:
Laser Applications Engineering (LAE-96)
Vadim P. Veiko, Editor(s)

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