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Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism

PURPOSE: To assess the stability, safety, predictability, and efficacy of topography-guided myopic Femto-LASIK with two different treatment protocols. SETTING: Ebsar Eye center, Benha, Qalyopia, Egypt. DESIGN: Single-center, retrospective, COHORT control study. METHODS: A total of 330 eyes enrolled...

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Autores principales: Abdelwahab, Shereef Mohammed, Hamed, Abdelmonem M, Bayoumy, Ahmed Sherin M, Elfayoumi, Maha Attaia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7755332/
https://www.ncbi.nlm.nih.gov/pubmed/33376296
http://dx.doi.org/10.2147/OPTH.S281736
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author Abdelwahab, Shereef Mohammed
Hamed, Abdelmonem M
Bayoumy, Ahmed Sherin M
Elfayoumi, Maha Attaia
author_facet Abdelwahab, Shereef Mohammed
Hamed, Abdelmonem M
Bayoumy, Ahmed Sherin M
Elfayoumi, Maha Attaia
author_sort Abdelwahab, Shereef Mohammed
collection PubMed
description PURPOSE: To assess the stability, safety, predictability, and efficacy of topography-guided myopic Femto-LASIK with two different treatment protocols. SETTING: Ebsar Eye center, Benha, Qalyopia, Egypt. DESIGN: Single-center, retrospective, COHORT control study. METHODS: A total of 330 eyes enrolled in the study in group A and 322 eyes enrolled in group B underwent uncomplicated primary bilateral topography-guided Femto-LASIK. Group A was treated with the subjective clinical refraction; however, group B was treated with the modified refraction according to ALCON protocol. RESULTS: The mean preoperative refractive spherical equivalent (MRSE) was −4.85±1.90D and −5.0±1.93D in group A and B, respectively (P = 0.86), and a cylinder of −0.95±0.80 D and −0.92±0.81D, respectively. At the 12 months’ postoperatively, the residual manifest SE within ± 0.5D was achieved by 82.86% of eyes in group A compared to 83.93% in group B. Of eyes, 92.06% had ≤0.5 astigmatism dioptre, while 100% of eyes had ≤1.0 astigmatism dioptre in group A (315 eyes); however, 91.80% of eyes had ≤0.5 astigmatism dioptre, while 100% of eyes had ≤1.0 astigmatism dioptre in group B. CONCLUSION: Topographic modification of the magnitude and axis of astigmatism treated using ALCON protocol when different from the clinical refraction may offer good refractive outcomes when we apply the Alcon precalculation considerations.
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spelling pubmed-77553322020-12-28 Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism Abdelwahab, Shereef Mohammed Hamed, Abdelmonem M Bayoumy, Ahmed Sherin M Elfayoumi, Maha Attaia Clin Ophthalmol Original Research PURPOSE: To assess the stability, safety, predictability, and efficacy of topography-guided myopic Femto-LASIK with two different treatment protocols. SETTING: Ebsar Eye center, Benha, Qalyopia, Egypt. DESIGN: Single-center, retrospective, COHORT control study. METHODS: A total of 330 eyes enrolled in the study in group A and 322 eyes enrolled in group B underwent uncomplicated primary bilateral topography-guided Femto-LASIK. Group A was treated with the subjective clinical refraction; however, group B was treated with the modified refraction according to ALCON protocol. RESULTS: The mean preoperative refractive spherical equivalent (MRSE) was −4.85±1.90D and −5.0±1.93D in group A and B, respectively (P = 0.86), and a cylinder of −0.95±0.80 D and −0.92±0.81D, respectively. At the 12 months’ postoperatively, the residual manifest SE within ± 0.5D was achieved by 82.86% of eyes in group A compared to 83.93% in group B. Of eyes, 92.06% had ≤0.5 astigmatism dioptre, while 100% of eyes had ≤1.0 astigmatism dioptre in group A (315 eyes); however, 91.80% of eyes had ≤0.5 astigmatism dioptre, while 100% of eyes had ≤1.0 astigmatism dioptre in group B. CONCLUSION: Topographic modification of the magnitude and axis of astigmatism treated using ALCON protocol when different from the clinical refraction may offer good refractive outcomes when we apply the Alcon precalculation considerations. Dove 2020-12-18 /pmc/articles/PMC7755332/ /pubmed/33376296 http://dx.doi.org/10.2147/OPTH.S281736 Text en © 2020 Abdelwahab et al. http://creativecommons.org/licenses/by-nc/3.0/ This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms (https://www.dovepress.com/terms.php).
spellingShingle Original Research
Abdelwahab, Shereef Mohammed
Hamed, Abdelmonem M
Bayoumy, Ahmed Sherin M
Elfayoumi, Maha Attaia
Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism
title Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism
title_full Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism
title_fullStr Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism
title_full_unstemmed Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism
title_short Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism
title_sort topography-guided femto-lasik in virgin eyes: treating manifest versus measured astigmatism
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7755332/
https://www.ncbi.nlm.nih.gov/pubmed/33376296
http://dx.doi.org/10.2147/OPTH.S281736
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