Optical model for light distribution during transscleral cyclophotocoagulation

Journal Article · Sun Feb 01 04:00:00 EST 1998 · Applied Optics

DOI:https://doi.org/10.1364/AO.37.000764· OSTI ID:679097

Nemati, B; Dunn, A; Welch, A J; Rylander, III, H G ^[1]

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1. Medical Optics Laboratory, Biomedical Engineering Program, ENS 610, University of Texas, Austin, Texas 78712 (United States)

Transscleral cyclophotocoagulation (TSCPC) is currently performed clinically as an effective treatment for end-stage glaucoma. We develop a theoretical model for the analysis of optical attenuation phenomena during TSCPC as a basis for selection of an optimal wavelength. A multilayered Monte Carlo model was developed to calculate the fluence and the rate of heat generation in each tissue layer for the wavelengths of Nd:YAG, diode, ruby, krypton yellow, and argon lasers. Of the five wavelengths under study, our theoretical results suggest that the diode laser wavelength offers the best penetration through the conjunctiva, sclera, and ciliary muscle and highest absorption within the ciliary pigment epithelium. {copyright} 1998 Optical Society of America.

• DOE Contract Number: FG03-95ER61971
• OSTI ID: 679097
• Journal Information: Applied Optics, Journal Name: Applied Optics Journal Issue: 4 Vol. 37; ISSN APOPAI; ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

56 BIOLOGY AND MEDICINE
APPLIED STUDIES
COAGULANTS
EYES
LASER RADIATION
LIGHT TRANSMISSION
MONTE CARLO METHOD
PHYSICAL RADIATION EFFECTS
THERAPY
VISIBLE SPECTRA