Scleral heating with pulsed mid-infrared lasers and temperature-dependent absorption coefficient
Identifieur interne : 002A78 ( Main/Exploration ); précédent : 002A77; suivant : 002A79Scleral heating with pulsed mid-infrared lasers and temperature-dependent absorption coefficient
Auteurs : F. Manns [États-Unis] ; J.-M. ParelSource :
- SPIE proceedings series [ 1017-2653 ] ; 1997.
Descripteurs français
- Pascal (Inist)
English descriptors
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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 one-dimensional 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.
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Parel</name></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">97-0482787</idno><date when="1997">1997</date><idno type="stanalyst">PASCAL 97-0482787 INIST</idno><idno type="RBID">Pascal:97-0482787</idno><idno type="wicri:Area/Pascal/Corpus">001352</idno><idno type="wicri:Area/Pascal/Curation">001352</idno><idno type="wicri:Area/Pascal/Checkpoint">001301</idno><idno type="wicri:explorRef" wicri:stream="Pascal" wicri:step="Checkpoint">001301</idno><idno type="wicri:doubleKey">1017-2653:1997:Manns F:scleral:heating:with</idno><idno type="wicri:Area/Main/Merge">002C73</idno><idno type="wicri:Area/Main/Curation">002A78</idno><idno type="wicri:Area/Main/Exploration">002A78</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Scleral heating with pulsed mid-infrared lasers and temperature-dependent absorption coefficient</title><author><name sortKey="Manns, F" sort="Manns, F" uniqKey="Manns F" first="F." last="Manns">F. Manns</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Ophthalmic Biophysics Center, Bascom Palmer Eye Institute, University of Miami</s1><s2>Miami, FL 33136</s2><s3>USA</s3></inist:fA14><country>États-Unis</country><wicri:noRegion>Miami, FL 33136</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Biomedical Engineering, University of Miami</s1><s2>Coral Gables, FL 33124</s2><s3>USA</s3></inist:fA14><country>États-Unis</country><wicri:noRegion>Coral Gables, FL 33124</wicri:noRegion></affiliation></author><author><name sortKey="Parel, J M" sort="Parel, J M" uniqKey="Parel J" first="J.-M." last="Parel">J.-M. Parel</name></author></analytic><series><title level="j" type="main">SPIE proceedings series</title><idno type="ISSN">1017-2653</idno><imprint><date when="1997">1997</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">SPIE proceedings series</title><idno type="ISSN">1017-2653</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorptance</term><term>Laser</term><term>Laser heating</term><term>Mid infrared radiation</term><term>Modeling</term><term>Sclera</term><term>Temperature</term><term>Thermal method</term><term>Thermokeratoplasty</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Sclérotique</term><term>Coefficient absorption</term><term>Méthode thermique</term><term>Modélisation</term><term>Température</term><term>Chauffage laser</term><term>Rayonnement IR moyen</term><term>Laser</term><term>Thermokératoplastie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">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 one-dimensional 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.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country></list><tree><noCountry><name sortKey="Parel, J M" sort="Parel, J M" uniqKey="Parel J" first="J.-M." last="Parel">J.-M. Parel</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Manns, F" sort="Manns, F" uniqKey="Manns F" first="F." last="Manns">F. Manns</name></noRegion><name sortKey="Manns, F" sort="Manns, F" uniqKey="Manns F" first="F." last="Manns">F. Manns</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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