Scleral heating with pulsed mid-infrared lasers and temperature-dependent absorption coefficient

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

We studied the effect of the temperature-dependence of the scleral absorption coefficient on the accuracy of thermal models of laser-induced scleral heating. The scleral surface temperature increase during pulsed Holmium:YAG and Thulium:YAG laser irradiation was calculated with a constant (static model) and temperature-dependent (dynamic model) absorption coefficient. The 1D heat equation was solved with the assumption that thermal diffusion during the pulse is negligible. We found that the dynamic model yields lower temperatures than the static model. For the sclera, the overestimation becomes significant when the surface temperature is above 70°C. This study shows that the temperature-dependence of the absorption coefficient must be taken into account to accurately predict laser-induced scleral or corneal heating.

Original languageEnglish (US)
Pages (from-to)55-58
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2971
DOIs
StatePublished - Dec 1 1997
Externally publishedYes
EventOphthalmic Technologies VII - San Jose, CA, United States
Duration: Feb 8 1997Feb 8 1997

Keywords

  • Absorption coefficient
  • Heating
  • Laser
  • Laser scleral buckling
  • Laser thermokeratoplasty
  • Mid-infrard lasers
  • Sclera
  • Temperature
  • Thermal model

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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