Therapy monitoring of laser cyclophotocoagulation

Uwe Oberheide; Christoph Lee; Ronald Krebs; Herbert Welling; Wolfgang Ertmer; Holger Lubatschowski

doi:10.1117/12.470605

13 June 2002 Therapy monitoring of laser cyclophotocoagulation

Uwe Oberheide, Christoph Lee, Ronald Krebs, Herbert Welling, Wolfgang Ertmer, Holger Lubatschowski

Proceedings Volume 4611, Ophthalmic Technologies XII; (2002) https://doi.org/10.1117/12.470605
Event: International Symposium on Biomedical Optics, 2002, San Jose, CA, United States

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.

Citation Download Citation

Uwe Oberheide, Christoph Lee, Ronald Krebs, Herbert Welling, Wolfgang Ertmer, and Holger Lubatschowski "Therapy monitoring of laser cyclophotocoagulation", Proc. SPIE 4611, Ophthalmic Technologies XII, (13 June 2002); https://doi.org/10.1117/12.470605

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