Corneal ectasia after myopic laser in situ keratomileusis: a long-term study

Leopoldo Spadea,1 Emilia Cantera,2 Magdalena Cortes,2 Nicole Evangelista Conocchia,1 Charles WM Stewart11University of L&rsquo;Aquila, Department of Biotechnological and Applied Clinical Sciences, Eye Clinic, L&rsquo;Aquila, 2Villa Stuart Clinic, Department of Ophthalmic Sciences, Ro...

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Autores principales:	Spadea L, Cantera E, Cortes M, Evangelista Conocchia E, Stewart CW
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2012
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/f3090c05a0414e27b1a3dc97a59b9174
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spelling	oai:doaj.org-article:f3090c05a0414e27b1a3dc97a59b91742021-12-02T02:19:22ZCorneal ectasia after myopic laser in situ keratomileusis: a long-term study1177-54671177-5483https://doaj.org/article/f3090c05a0414e27b1a3dc97a59b91742012-11-01T00:00:00Zhttp://www.dovepress.com/corneal-ectasia-after-myopic-laser-in-situ-keratomileusis-a-long-term--a11425https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Leopoldo Spadea,1 Emilia Cantera,2 Magdalena Cortes,2 Nicole Evangelista Conocchia,1 Charles WM Stewart11University of L&rsquo;Aquila, Department of Biotechnological and Applied Clinical Sciences, Eye Clinic, L&rsquo;Aquila, 2Villa Stuart Clinic, Department of Ophthalmic Sciences, Rome, ItalyBackground: The purpose of this study was to evaluate the long-term postoperative incidence of and key factors in the genesis of corneal ectasia after myopic laser-assisted in situ keratomileusis (LASIK) in a large number of cases.Methods: A retrospective review of one surgeon&#39;s myopic LASIK database was performed. Patients were stratified into two groups based on date of surgery, ie, group 1 (1313 eyes) from 1999 to 2001 and group 2 (2714 eyes) from 2001 to 2003. Visual acuity, refraction, pachymetry, and corneal topography data were available for each patient from examinations performed both before and after the refractive procedures.Results: Of the 4027 surgically treated eyes, 23 (0.57%) developed keratectasia during the follow-up period, which was a minimum seven years; nine eyes (0.69%) were from group 1 and 14 eyes (0.51%) were from group 2. The onset of corneal ectasia was at 2.57 &plusmn; 1.04 (range 1&ndash;4) years and 2.64 &plusmn; 1.29 (range 0.5&ndash;5) years, respectively, for groups 1 and 2. The most important preoperative risk factors using the Randleman Ectasia Risk Score System were manifest refractive spherical error in group 1 and a thin residual stromal bed in group 2. Each of the cases that developed corneal ectasia had risk factors that were identified.Conclusion: Ectasia was an uncommon outcome after an otherwise uncomplicated laser in situ keratomileusis procedure. The variables present in eyes developing postoperative LASIK ectasia can be better understood using the Randleman Ectasia Risk Score System.Keywords: corneal topography, Ectasia Risk Score System, keratectasia, myopia, LASIKSpadea LCantera ECortes MEvangelista Conocchia EStewart CWDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2012, Iss default, Pp 1801-1813 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Spadea L Cantera E Cortes M Evangelista Conocchia E Stewart CW Corneal ectasia after myopic laser in situ keratomileusis: a long-term study
description	Leopoldo Spadea,1 Emilia Cantera,2 Magdalena Cortes,2 Nicole Evangelista Conocchia,1 Charles WM Stewart11University of L&rsquo;Aquila, Department of Biotechnological and Applied Clinical Sciences, Eye Clinic, L&rsquo;Aquila, 2Villa Stuart Clinic, Department of Ophthalmic Sciences, Rome, ItalyBackground: The purpose of this study was to evaluate the long-term postoperative incidence of and key factors in the genesis of corneal ectasia after myopic laser-assisted in situ keratomileusis (LASIK) in a large number of cases.Methods: A retrospective review of one surgeon&#39;s myopic LASIK database was performed. Patients were stratified into two groups based on date of surgery, ie, group 1 (1313 eyes) from 1999 to 2001 and group 2 (2714 eyes) from 2001 to 2003. Visual acuity, refraction, pachymetry, and corneal topography data were available for each patient from examinations performed both before and after the refractive procedures.Results: Of the 4027 surgically treated eyes, 23 (0.57%) developed keratectasia during the follow-up period, which was a minimum seven years; nine eyes (0.69%) were from group 1 and 14 eyes (0.51%) were from group 2. The onset of corneal ectasia was at 2.57 &plusmn; 1.04 (range 1&ndash;4) years and 2.64 &plusmn; 1.29 (range 0.5&ndash;5) years, respectively, for groups 1 and 2. The most important preoperative risk factors using the Randleman Ectasia Risk Score System were manifest refractive spherical error in group 1 and a thin residual stromal bed in group 2. Each of the cases that developed corneal ectasia had risk factors that were identified.Conclusion: Ectasia was an uncommon outcome after an otherwise uncomplicated laser in situ keratomileusis procedure. The variables present in eyes developing postoperative LASIK ectasia can be better understood using the Randleman Ectasia Risk Score System.Keywords: corneal topography, Ectasia Risk Score System, keratectasia, myopia, LASIK
format	article
author	Spadea L Cantera E Cortes M Evangelista Conocchia E Stewart CW
author_facet	Spadea L Cantera E Cortes M Evangelista Conocchia E Stewart CW
author_sort	Spadea L
title	Corneal ectasia after myopic laser in situ keratomileusis: a long-term study
title_short	Corneal ectasia after myopic laser in situ keratomileusis: a long-term study
title_full	Corneal ectasia after myopic laser in situ keratomileusis: a long-term study
title_fullStr	Corneal ectasia after myopic laser in situ keratomileusis: a long-term study
title_full_unstemmed	Corneal ectasia after myopic laser in situ keratomileusis: a long-term study
title_sort	corneal ectasia after myopic laser in situ keratomileusis: a long-term study
publisher	Dove Medical Press
publishDate	2012
url	https://doaj.org/article/f3090c05a0414e27b1a3dc97a59b9174
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Corneal ectasia after myopic laser in situ keratomileusis: a long-term study

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