Assessing the local temperature of human cornea exposed to surface ablation by different laser refractive-surgery devices: a numerical comparative study
| Autor: | Ibrahim Abdelhalim, Omnia Hamdy, Salah Hassab Elnaby, Aziza Ahmed Hassan |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
medicine.medical_treatment Keratomileusis Laser In Situ Dermatology Radiation law.invention Cornea 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Optics law Refractive surgery medicine Myopia Humans business.industry Temperature LASIK 030206 dentistry Finite element solution Laser Ablation medicine.anatomical_structure Surgery Lasers Excimer business Beam (structure) |
| Zdroj: | Lasers in medical science. 36(8) |
| ISSN: | 1435-604X |
| Popis: | To evaluate the local temperature at corneal tissue after applying single laser pulse from six commercial devices; Medilex™, Katana laser-soft, MEL90, Technolas-Teneo317, Alcon EX500, and PulzarTMZ1. The temperature distribution is simulated using finite element solution of the Penne’s bio-heat transfer equation on a 3-D model of human cornea using the manufacturer’s assigning parameters. The obtained results showed that the heating effect of Katana laser soft is 40% lower than MEL90 and Pulzar™ Z1, while the broad beam Medilex™ showed the minimum temperature rise especially at 248-nm laser radiation. The change in laser parameters selected for ablation has significant effect on the corneal local temperature. The broad beam-based device produces lower local corneal temperature than other flying spot types. |
| Databáze: | OpenAIRE |
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