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

Shereef Mohammed Abdelwahab, Abdelmonem M Hamed, Ahmed Sherin M Bayoumy, Maha Attaia Elfayoumi Ophthalmology Department, Benha College of Medicine, Benha University, Benha, EgyptCorrespondence: Abdelmonem M Hamed Tel +20 1221640288Email abdelmonem.abdelmonem@fmed.bu.edu.egPurpose: To assess the stab...

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Autores principales:	Abdelwahab SM, Hamed AM, Bayoumy ASM, Elfayoumi MA
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	femto-lasik topo-guided lasik kerato-refractive laser vision correction modified refraction measured astigmatism contoura calculator contoura lasik Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/60ade09816174ebab91f578f57860588
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spelling	oai:doaj.org-article:60ade09816174ebab91f578f578605882021-12-02T13:34:08ZTopography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism1177-5483https://doaj.org/article/60ade09816174ebab91f578f578605882020-12-01T00:00:00Zhttps://www.dovepress.com/topography-guided-femto-lasik-in-virgin-eyes-treating-manifest-versus--peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Shereef Mohammed Abdelwahab, Abdelmonem M Hamed, Ahmed Sherin M Bayoumy, Maha Attaia Elfayoumi Ophthalmology Department, Benha College of Medicine, Benha University, Benha, EgyptCorrespondence: Abdelmonem M Hamed Tel +20 1221640288Email abdelmonem.abdelmonem@fmed.bu.edu.egPurpose: 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.Keywords: Femto-LASIK, topo-guided LASIK, kerato-refractive, LASER vision correction, modified refraction, measured astigmatism, Contoura calculator, Contoura LASIKAbdelwahab SMHamed AMBayoumy ASMElfayoumi MADove Medical Pressarticlefemto-lasiktopo-guided lasikkerato-refractivelaser vision correctionmodified refractionmeasured astigmatismcontoura calculatorcontoura lasikOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 4423-4430 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	femto-lasik topo-guided lasik kerato-refractive laser vision correction modified refraction measured astigmatism contoura calculator contoura lasik Ophthalmology RE1-994
spellingShingle	femto-lasik topo-guided lasik kerato-refractive laser vision correction modified refraction measured astigmatism contoura calculator contoura lasik Ophthalmology RE1-994 Abdelwahab SM Hamed AM Bayoumy ASM Elfayoumi MA Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism
description	Shereef Mohammed Abdelwahab, Abdelmonem M Hamed, Ahmed Sherin M Bayoumy, Maha Attaia Elfayoumi Ophthalmology Department, Benha College of Medicine, Benha University, Benha, EgyptCorrespondence: Abdelmonem M Hamed Tel +20 1221640288Email abdelmonem.abdelmonem@fmed.bu.edu.egPurpose: 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.Keywords: Femto-LASIK, topo-guided LASIK, kerato-refractive, LASER vision correction, modified refraction, measured astigmatism, Contoura calculator, Contoura LASIK
format	article
author	Abdelwahab SM Hamed AM Bayoumy ASM Elfayoumi MA
author_facet	Abdelwahab SM Hamed AM Bayoumy ASM Elfayoumi MA
author_sort	Abdelwahab SM
title	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_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_sort	topography-guided femto-lasik in virgin eyes: treating manifest versus measured astigmatism
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/60ade09816174ebab91f578f57860588
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Topography-Guided Femto-LASIK in Virgin Eyes: Treating Manifest versus Measured Astigmatism

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