Primary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism

Fayrouz Aboalazayem, Mohamed Hosny, Cherif Zaazou, Mohamed Anis Ophthalmology Department, Kasr Alainy Faculty of Medicine, Cairo University, Cairo, EgyptCorrespondence: Fayrouz AboalazayemCairo University, 108 Alshaheed Ahmed Hamdy St., Madkour, Cairo, EgyptTel +20 1007419500Fax +20 223636504Email f...

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Autores principales:	Aboalazayem F, Hosny M, Zaazou C, Anis M
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	lasik contoura tmr Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/7f87d535d9b343b697d5c33826a86a83
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spelling	oai:doaj.org-article:7f87d535d9b343b697d5c33826a86a832021-12-02T13:02:00ZPrimary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism1177-5483https://doaj.org/article/7f87d535d9b343b697d5c33826a86a832020-12-01T00:00:00Zhttps://www.dovepress.com/primary-topography-guided-lasik-a-comparative-study-comparing-treating-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Fayrouz Aboalazayem, Mohamed Hosny, Cherif Zaazou, Mohamed Anis Ophthalmology Department, Kasr Alainy Faculty of Medicine, Cairo University, Cairo, EgyptCorrespondence: Fayrouz AboalazayemCairo University, 108 Alshaheed Ahmed Hamdy St., Madkour, Cairo, EgyptTel +20 1007419500Fax +20 223636504Email fayrouzaboalazaym@gmail.comPurpose: To investigate if topography-guided laser in situ keratomileusis (LASIK) depending on the topographic astigmatism which is measured using the Topolyzer leads to a better refractive outcome when compared to treatment of the manifest refractive astigmatism in cases of myopic astigmatism.Methods: This was a prospective non-masked, randomized study (block randomization) of postoperative vision and refraction of patients with myopic astigmatism that had LASIK using Contoura vision software. They were divided into three groups according to the treatment strategy, treating the manifest astigmatism in one group, the topographic astigmatism with compensation for the spherical power in the second group and treating the topographic astigmatism without changing the spherical power in the third group. It was conducted at Kasr Alainy Hospital and Dar Eloyon Hospital.Results: The postoperative uncorrected distant visual acuity (UDVA) in each group separately was better than the preoperative corrected distant visual acuity (CDVA) (58% (n=35) had UDVA better than 20/20 and gained 1 line or more); however, eyes treated with the topographic astigmatism without changing the spherical power showed the statistically best results (75% (n=15) had UDVA better than 20/20). The residual anterior corneal astigmatism was lower in this group (the mean 0.47 vs 0.95 and 0.59). No significant difference was noted in the residual refractive astigmatism, but it was also the least in that group.Conclusion: Topography-guided LASIK is a safe and effective ablation profile for treatment of myopic astigmatism. Treating according to the topographic astigmatism shows the best outcome as regards the vision and residual astigmatism.Keywords: LASIK, Contoura, TMRAboalazayem FHosny MZaazou CAnis MDove Medical PressarticlelasikcontouratmrOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 4145-4153 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	lasik contoura tmr Ophthalmology RE1-994
spellingShingle	lasik contoura tmr Ophthalmology RE1-994 Aboalazayem F Hosny M Zaazou C Anis M Primary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism
description	Fayrouz Aboalazayem, Mohamed Hosny, Cherif Zaazou, Mohamed Anis Ophthalmology Department, Kasr Alainy Faculty of Medicine, Cairo University, Cairo, EgyptCorrespondence: Fayrouz AboalazayemCairo University, 108 Alshaheed Ahmed Hamdy St., Madkour, Cairo, EgyptTel +20 1007419500Fax +20 223636504Email fayrouzaboalazaym@gmail.comPurpose: To investigate if topography-guided laser in situ keratomileusis (LASIK) depending on the topographic astigmatism which is measured using the Topolyzer leads to a better refractive outcome when compared to treatment of the manifest refractive astigmatism in cases of myopic astigmatism.Methods: This was a prospective non-masked, randomized study (block randomization) of postoperative vision and refraction of patients with myopic astigmatism that had LASIK using Contoura vision software. They were divided into three groups according to the treatment strategy, treating the manifest astigmatism in one group, the topographic astigmatism with compensation for the spherical power in the second group and treating the topographic astigmatism without changing the spherical power in the third group. It was conducted at Kasr Alainy Hospital and Dar Eloyon Hospital.Results: The postoperative uncorrected distant visual acuity (UDVA) in each group separately was better than the preoperative corrected distant visual acuity (CDVA) (58% (n=35) had UDVA better than 20/20 and gained 1 line or more); however, eyes treated with the topographic astigmatism without changing the spherical power showed the statistically best results (75% (n=15) had UDVA better than 20/20). The residual anterior corneal astigmatism was lower in this group (the mean 0.47 vs 0.95 and 0.59). No significant difference was noted in the residual refractive astigmatism, but it was also the least in that group.Conclusion: Topography-guided LASIK is a safe and effective ablation profile for treatment of myopic astigmatism. Treating according to the topographic astigmatism shows the best outcome as regards the vision and residual astigmatism.Keywords: LASIK, Contoura, TMR
format	article
author	Aboalazayem F Hosny M Zaazou C Anis M
author_facet	Aboalazayem F Hosny M Zaazou C Anis M
author_sort	Aboalazayem F
title	Primary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism
title_short	Primary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism
title_full	Primary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism
title_fullStr	Primary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism
title_full_unstemmed	Primary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism
title_sort	primary topography-guided lasik: a comparative study comparing treating the manifest versus the topographic astigmatism
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/7f87d535d9b343b697d5c33826a86a83
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Primary Topography-Guided LASIK: A Comparative Study Comparing Treating the Manifest versus the Topographic Astigmatism

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