Infrared measurement of thermal constants in laser-irradiated scleral tissue

Jamie D. Rhead; Aravinda Kar; Glenn D. Boreman; Fabrice Manns; Mikio Sasoh M.D.; Jean-Marie A. Parel

doi:10.1117/12.240200

17 May 1996 Infrared measurement of thermal constants in laser-irradiated scleral tissue

Jamie D. Rhead, Aravinda Kar, Glenn D. Boreman, Fabrice Manns, Mikio Sasoh M.D., Jean-Marie A. Parel

Proceedings Volume 2673, Ophthalmic Technologies VI; (1996) https://doi.org/10.1117/12.240200
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Laser scleral buckling (LSB) experiments were performed by irradiating human cadaver eyes with a focused beam from a 2.1-micrometer Ho:YAG laser. Spatially and temporally resolved temperature maps of the sclera were inferred from infrared images of the tissue's thermal radiation. An infrared focal-plane camera operating in the 3- to 5-micrometer wavelength interval was used for the measurements, from which we derived absorption and thermal diffusivity coefficients of the scleral tissue, along with the temperature dependence of these coefficients. A thermal-response model was developed, which describes the tissue surface temperature in response to a train of laser pulses, given the pulse repetition rate, beam fluence, spot size, and total energy delivered. This model provides guidance for optimization of laser-irradiation parameters for LSB treatment.

Citation Download Citation

Jamie D. Rhead, Aravinda Kar, Glenn D. Boreman, Fabrice Manns, Mikio Sasoh M.D., and Jean-Marie A. Parel "Infrared measurement of thermal constants in laser-irradiated scleral tissue", Proc. SPIE 2673, Ophthalmic Technologies VI, (17 May 1996); https://doi.org/10.1117/12.240200

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