THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

THRESHOLD OF PERMANENT CORNEA THERMAL DAMAGE DUE TO INCIDENTAL CONTINUOUS WAVE CO2 LASER IRRADIATION

ABSTRACT
Cornea thermal damage due to incidental continuous wave CO2 laser irradiation is studied numerically based on bio-heat equation. The interaction of laser with tissue leads to a rapid temperature increased in target and the nearby tissue. As the temperature of the eye surface reaches 44°C, a sensation of pain will cause aversion response of the reflex blink and/or shifting away from the source of pain. The aim of the work is to predict numerically the threshold limit of incidental laser power that causes damage to the anterior part of the cornea, which can be healed within 2-5 days as long as damage is not exceeding the outer part of the eye (epithelium). A finite element analysis is used to predict temperature distribution through the cornea where the necroses region can be obtained using thermal dose equation. The thermal dose that required for damaging the cornea is predicted from previously published experimental data on rhesus monkeys and used later as a limit for shrinkage to human cornea. The result of this work is compared by international standard of safety and a good nearby result is obtained which verified the result of this work.
KEYWORDS
PAPER SUBMITTED: 2009-12-03
PAPER REVISED: 2010-01-04
PAPER ACCEPTED: 2010-01-06
DOI REFERENCE: https://doi.org/10.2298/TSCI1002459T
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2010, VOLUME 14, ISSUE 2, PAGES [459 - 467]
REFERENCES
  1. Hamed, M., Nadeau, V., Dickinson, M. R., A Novel Modeling and Experimental Technique to Predict and Measure Tissue Temperature During CO2 Laser Stimuli for Human Pain Studies, J. Lasers Med. Sci, 21 (2006), 2, pp. 95-100
  2. Ready, J. F., Industrial Applications of Lasers, 2nd ed., Academic Press, San Diego, Cal., USA, 1997
  3. Cicekli, U., Computational Model for Heat Transfer in the Human Eye Using the Finite Element Method, M. Sc. thesis, Louisiana State University, Baton Rouge, La., USA, 2003
  4. Mihran, R. T., Interaction of Laser Radiation with Structure of the Eye, IEEE Transactions on Education, 34 (1991), 3, pp. 250-257
  5. Minkowycz, W. I., Sparrow, E. M., Murthy, J. Y., Handbook of Numerical Heat Transfer, 2nd ed., John Willey & Sons, Inc., New York, USA, 2006
  6. Ooi, E., Ang, W., Ng, E., Bioheat Transfer in the Human Eye: A Boundary Element Approach, Engineering Analysis with Boundary Elements, 31 (2007), 6, pp. 494-500
  7. Mcquistion, F. C., et. al. Heating, Ventilating, and Air Conditioning, 5th ed., John Wiley & Sons, Inc., New York, USA, 2000
  8. Mishima, S., Some Physiological Aspect of the Personal Tear Film, Arch. Ophthalmol, 73 (1965), pp. 233-241
  9. Niemz, M. H., Laser-Tissue Interactions, Springer-Verlag, Berlin, Heidelberg, Germany, 1996
  10. Amara, E. H., Numerical Investigation on Thermal Effects of Laser Ocular Media Interaction, International Journal of Heat and Mass Transfer, 38 (1995), 13, pp. 2479-2488
  11. Waddell, H. G., et al., Advance in Biological Heat and Mass Transfer (Ed. J. J . McGrath), ASME HTD, New York, USA, 1992
  12. Chen, B., Experimental and Modeling Study of Thermal Response of Skin and Cornea Wavelengths Laser Irradiation, Ph. D. thises, The University of Texas at Austin, Tex., USA, 2007
  13. Lewis, R. W., et. al., The Finite Element Method in Heat Transfer Analysis, John Wiley & Sons Ltd., Chi- chester, UK, 1996
  14. Sapareto, S. A., Dewey, W. C., Thermal Dose Determination in Cancer Therapy, Int. J. Radiat. Oncol. Biol. Phys., 10 (1984), 6, pp. 787-800
  15. Chato, J. C., Fundamentals of Bioheat Transfer, in: Thermal Dosimetry Planning (Ed. M. Gautherie), Springer-Verlag, Berlin, 1990
  16. Roemer, R. B., Thermal Dosimetry, in: Thermal Dosimetry Planning (Ed. M. Gautherie), Berlin, Springer-Verlag, 1990
  17. Arkin, H., Xu, X., Holmes, K. R., Recent Developments in Modeling Heat Transfer in Blood Perfusion Tissues, IEEE Trans. Biomed. Eng., 41 (1994), 2, pp. 97-107
  18. Dewey, W. C., Arrhenius Relationships from the Molecules and Cell to the Clinic, Int. J. Hyperthermia, 10 (1994), 4, pp. 457-483
  19. Damianou, C. A., Hynynen, K., Fan, X., Evaluation of Accuracy of a Theoretical Model for Predicting the Necroses Tissue Volume during Focused Ultrasound Surgery, IEEE Trans. Ultrason. Ferroelect. Freq. Contr., 42 (1995), 2, pp. 182-187

© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence