FETD COMPUTATION OF THE TEMPERATURE DISTRIBUTION INDUCED INTO A HUMAN EYE BY A PULSED LASER | Zendy

Mario Cvetković | Zendy; Dragan Poljak | Zendy; Andrés Peratta | Zendy

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FETD COMPUTATION OF THE TEMPERATURE DISTRIBUTION INDUCED INTO A HUMAN EYE BY A PULSED LASER

Author(s) -

Mario Cvetković,

Dragan Poljak,

Andrés Peratta

Publication year - 2011

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier11080405

Subject(s) - laser , computation , distribution (mathematics) , human eye , optics , materials science , pulsed laser , computer science , physics , psychology , optometry , mathematics , medicine , algorithm , mathematical analysis

In this paper we present the three-dimensional flnite element time domain model of the human eye exposed to pulsed holmium: YAG laser radiation used in thermokeratoplasty procedure. The model is based on the Pennes' bioheat transfer equation and takes into account the focusing action of the lens. The absorption of laser energy inside the eye tissues is modeled using the Lambert-Beer's law. Model takes into account the pulse temporal proflle. The maximum temperature values obtained from steady state and transient analysis are compared against those reported from other papers. Finally, sensitivity analysis of several parameters on the calculated temperature fleld is carried out.

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