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Proceedings Paper

Therapy monitoring of laser cyclophotocoagulation
Author(s): Uwe Oberheide; Christoph Lee; Ronald Krebs; Herbert Welling; Wolfgang Ertmer; Holger Lubatschowski
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Paper Abstract

Laser induced ultrasound provides a powerful tool for solving a major problem of laser cyclophotocoagulation, which is caused by difficulties in localization and determination of optical properties. Furthermore it adds the possibility of an online control mechanism for the process of coagulation of the ciliary body. We have developed a transducer system which is based on a fiber with 600 micrometers core diameter surrounded by a ring shaped piezoelectric PVDF detector. With this detector it is possible to localize the lateral position of the ciliary body on enucleated pigs and rabbit eyes as well as its depth. Our findings correspond well with histological sections of the measured area. Additionally, the changes in the tissue's optical properties induced by coagulation with a diode laser have been detected in real time.

Paper Details

Date Published: 13 June 2002
PDF: 6 pages
Proc. SPIE 4611, Ophthalmic Technologies XII, (13 June 2002); doi: 10.1117/12.470605
Show Author Affiliations
Uwe Oberheide, Laser Zentrum Hannover e.V. (Germany)
Christoph Lee, Laser Zentrum Hannover e.V. (Germany)
Ronald Krebs, Univ. Hannover (Germany)
Herbert Welling, Laser Zentrum Hannover e.V. (Germany)
Wolfgang Ertmer, Univ. Hannover (Germany)
Holger Lubatschowski, Laser Zentrum Hannover e.V. (Germany)

Published in SPIE Proceedings Vol. 4611:
Ophthalmic Technologies XII
Fabrice Manns; Per G. Soederberg; Arthur Ho, Editor(s)

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