Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques

4 figures.

Detalhes bibliográficos
Autores: Gokul, K. C., Kandel, Himal, Valiño García, Luis, Kaiti, Raju, Roy, Prosun, Sohail, Muhammad, Gurung, Dil Bahadur
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/329509
Acesso em linha:http://hdl.handle.net/10261/329509
Access Level:acceso abierto
Palavra-chave:Excimer laser
Finite element method
Heat transfer
Laser refractive surgery
http://metadata.un.org/sdg/3
Ensure healthy lives and promote well-being for all at all ages
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spelling Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniquesGokul, K. C.Kandel, HimalValiño García, LuisKaiti, RajuRoy, ProsunSohail, MuhammadGurung, Dil BahadurExcimer laserFinite element methodHeat transferLaser refractive surgeryhttp://metadata.un.org/sdg/3Ensure healthy lives and promote well-being for all at all ages4 figures.Refractive errors are the most common causes of vision impairment worldwide and laser refractive surgery is one of the most frequently performed ocular surgeries. Clinical studies have reported that approximately 10.5% of patients need an additional procedure after the surgery. The major complications of laser surgery are over/under correction and dry eye. An increase in temperature may be a cause for these complications. The purpose of this study was to estimate the increase in temperature during laser refractive surgery and its relationship with the complications observed for different surgical techniques. In this paper, a finite element model was applied to investigate the temperature distribution of the cornea when subjected to ArF excimer laser at a single spot using various beam delivery systems (broad beam, scanning slit, and flying spot). The Pennes bio-heat equation was used to predict the temperature values at different laser pulse energies and frequencies. The maximum temperature increase by ArF laser (500Hz frequency and 0.5J pulse energy) at a single spot was 33.94∘C,15.86∘C,12.48∘C for 6 diopter correction (65.4μm of ablation of corneal stroma) using broad beam, scanning slit, and flying spot beam delivery approaches respectively. The peak temperature due to a single pulse was estimated to be 234.14∘C. Although the peak temperature (sufficient energy to break intermolecular bonds) exists for a very short time (10−30ns) compared to the thermal relaxation time (2000−10,000μs), there is some thermal energy exchange between corneal tissues during a laser refractive surgery. Heating may cause collagen denaturation, collagen shrinkage, and more evaporation and hence proposed to be a risk factor for over/under correction and dry eye.Peer reviewedSpringerKandel, Himal [0000-0002-6745-6411]Valiño García, Luis [0000-0002-2384-5896]Kaiti, Raju [0000-0002-0143-2548]Roy, Prosun [0000-0003-1978-0484]Gokul, K. C. [gokul.kc@ku.edu.np]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/329509reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1007/s10103-021-03420-zSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3295092026-05-22T06:33:51Z
dc.title.none.fl_str_mv Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques
title Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques
spellingShingle Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques
Gokul, K. C.
Excimer laser
Finite element method
Heat transfer
Laser refractive surgery
http://metadata.un.org/sdg/3
Ensure healthy lives and promote well-being for all at all ages
title_short Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques
title_full Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques
title_fullStr Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques
title_full_unstemmed Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques
title_sort Computational study for temperature distribution in ArF excimer laser corneal refractive surgeries using different beam delivery techniques
dc.creator.none.fl_str_mv Gokul, K. C.
Kandel, Himal
Valiño García, Luis
Kaiti, Raju
Roy, Prosun
Sohail, Muhammad
Gurung, Dil Bahadur
author Gokul, K. C.
author_facet Gokul, K. C.
Kandel, Himal
Valiño García, Luis
Kaiti, Raju
Roy, Prosun
Sohail, Muhammad
Gurung, Dil Bahadur
author_role author
author2 Kandel, Himal
Valiño García, Luis
Kaiti, Raju
Roy, Prosun
Sohail, Muhammad
Gurung, Dil Bahadur
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Kandel, Himal [0000-0002-6745-6411]
Valiño García, Luis [0000-0002-2384-5896]
Kaiti, Raju [0000-0002-0143-2548]
Roy, Prosun [0000-0003-1978-0484]
Gokul, K. C. [gokul.kc@ku.edu.np]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Excimer laser
Finite element method
Heat transfer
Laser refractive surgery
http://metadata.un.org/sdg/3
Ensure healthy lives and promote well-being for all at all ages
topic Excimer laser
Finite element method
Heat transfer
Laser refractive surgery
http://metadata.un.org/sdg/3
Ensure healthy lives and promote well-being for all at all ages
description 4 figures.
publishDate 2021
dc.date.none.fl_str_mv 2021
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/329509
url http://hdl.handle.net/10261/329509
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1007/s10103-021-03420-z
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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