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01-10-2021 | Laser | Original Article

Assessing the local temperature of human cornea exposed to surface ablation by different laser refractive-surgery devices: a numerical comparative study

Authors: Ibrahim Abdelhalim, Omnia Hamdy, Aziza Ahmed Hassan, Salah Hassab Elnaby

Published in: Lasers in Medical Science | Issue 8/2021

Abstract

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 Pulzar^TMZ1. 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.

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Title: Assessing the local temperature of human cornea exposed to surface ablation by different laser refractive-surgery devices: a numerical comparative study
Authors: Ibrahim Abdelhalim
Omnia Hamdy
Aziza Ahmed Hassan
Salah Hassab Elnaby
Publication date: 01-10-2021
Publisher: Springer London
Keyword: Laser
Published in: Lasers in Medical Science / Issue 8/2021
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-021-03347-5

At a glance: The STEP trials

Springer Medicine

Assessing the local temperature of human cornea exposed to surface ablation by different laser refractive-surgery devices: a numerical comparative study

Abstract

At a glance: The STEP trials

Springer Medicine

Abstract

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