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Thermal Modelling of the Human Eye exposed to Infrared Radiation of 1064 nm Nd:YAG and 2090 nm Ho:YAG Lasers

In the last few decades laser eye surgery has been implemented in various ophthalmic procedures. The most important issue with laser eye surgery is estimation of temperature rise in eye tissues due to absorption of high intensity laser radiation. The 2D model of the human eye, using the Finite Elements Method, is developed in order to study the temperature distribution in human eye subjected to radiation by two infrared lasers, 1064 nm Nd:YAG and 2090 nm Ho:YAG laser. The mathematical model is based on the space--time dependent Pennes' bioheat transfer equation supplemented with natural boundary condition equations for cornea and sclera. The results could prove to be useful in predicting the damage to intraocular tissues due to heating by infrared laser radiation.

infrared laser-eye interaction; thermal modelling; FEM

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