Simulation of the temperature increase in porcine cadaver iris during direct illumination by femtosecond laser pulses

Hui Sun; Ronald M. Kurtz; Tibor Juhasz

doi:10.1117/12.905279

9 February 2012 Simulation of the temperature increase in porcine cadaver iris during direct illumination by femtosecond laser pulses

Hui Sun, Ronald M. Kurtz, Tibor Juhasz

Author Affiliations +

Proceedings Volume 8221, Optical Interactions with Tissue and Cells XXIII; 82211C (2012) https://doi.org/10.1117/12.905279
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

As a model for laser exposure of the iris during femtosecond corneal surgery, we simulated the temperature rise in porcine cadaver iris during direct illumination by the femtosecond laser. The temperature increase induced by a 60 kHz iFS Advanced Femtosecond Laser (AMO Inc., Santa Ana, CA) in porcine cadaver iris was simulated using COMSOL (Comsol Inc., Burlington, MA) finite element software. Temperature increases up to 2.45 °C (corresponding to 2 μJ laser pulse energy and 24 second illumination) were observed in the porcine cadaver iris from the simulation with little variation in temperature profiles compared with specimens for the same laser energy illumination in experiment. : The commercial iFS Advanced Femtosecond Laser operating with pulse energies at approximately the lower limit of the range evaluated in this study would be expected to result in a 1.23 °C temperature increase and, therefore, does not present a safety hazard to the iris.

Citation Download Citation

Hui Sun, Ronald M. Kurtz, and Tibor Juhasz "Simulation of the temperature increase in porcine cadaver iris during direct illumination by femtosecond laser pulses", Proc. SPIE 8221, Optical Interactions with Tissue and Cells XXIII, 82211C (9 February 2012); https://doi.org/10.1117/12.905279

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