3D FEM Temperature Distribution Analysis Of
The Human Eye Exposed To Laser Radiation
Author(s)
M. Cvetkovi´c, D. ˇCavka, D. Poljak & A. Peratta
Abstract
This paper is an extension of a previously published work on thermal modelling
of the human eye exposed to radiation by various lasers. The 2D model is now
extended to 3D in order to give a more realistic representation of the human
eye model when irradiated by laser. The model is based on space-time dependent
Pennes’ bio-heat transfer equation solved by the finite elements method featuring
Galerking-Bubnov procedure. The results for the temperature field inside the eye
could prove to be useful in minimising the possible damage to intraocular tissues
during the ophthalmological procedures and also later in analysis of laser-tissue
interaction mechanisms. Also, analysis of various parameters on the calculated
temperature distribution is carried out.
1 Introduction
The last few decades have witnessed an expansion of laser usage in various ophthalmological
operations. Nowadays, medical lasers cover wavelengths from ultraviolet
to the infrared parts of the electromagnetic spectrum.
An increasing number of laser uses and spread of different types of eye surgeries
has led to a need for quantitatively understanding basic laser-tissue interaction.
Due to this fact, a number of models [1–5] were developed to predict the various
processes inside the eye, with the goal of helping ophthalmologists in minimizing
the possible damage to ocular tissue while operating with laser.
The interaction of light with tissue results in either a transmission, reflection,
scattering, or absorption of this light. Inmodelling laser-tissue interaction, themost
important among these is absorption, since absorbed light is re-emitted as radiant
Keywords
Related Book
Other papers in this volume
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