Effects of anisotropy in cornea thermal conductivity on temperature profiles in RF thermokeratoplasty

Author

Berjano, Enrique J. ; Saiz, Javier ; Ferrero, José M. ; Alió, Jorge L.

Author_Institution

Inst. Oftalmologico de Alicante, Spain

Volume

4

fYear

1998

fDate

29 Oct-1 Nov 1998

Firstpage

1953

Abstract

This work presents a theoretical study on the effect of possible anisotropy of the thermal conductivity of the cornea during the heating with RF currents in radiofrequency thermokeratoplasty. The model is based on the finite element method and includes a fragment of cornea, aqueous humor and a stainless steel electrode on the cornea surface. The results reveal that the effect of the possible anisotropy in cornea thermal conductivity is more important during heatings of several seconds and negligible for short duration applications less than 100 ms

Keywords

eye; finite element analysis; hyperthermia; physiological models; radiofrequency heating; temperature distribution; thermal conductivity; FEM model; RF coagulation; RF thermokeratoplasty; anisotropy effects; aqueous humor; axisymmetric model; computer simulation; cornea fragment; cornea thermal conductivity; heating with RF currents; stainless steel electrode; temperature profiles; Anisotropic magnetoresistance; Cornea; Electrodes; Finite element methods; Heating; Numerical models; Radio frequency; Steel; Temperature; Thermal conductivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE

Conference_Location

Hong Kong

ISSN

1094-687X

Print_ISBN

0-7803-5164-9

Type

conf

DOI

10.1109/IEMBS.1998.746983

Filename

746983