Two-step LASIK after penetrating keratoplasty

Aris&nbsp;N Kollias, Markus M Schaumberger, Thomas C Kreutzer, Michael W Ulbig, Carlo A LackerbauerUniversity Eye Hospital,&nbsp;Ludwig-Maximilians University, Munich, GermanyPurpose: The point of interest of this retrospective case review is to study refractive changes caused by the...

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Autores principales:	Aris&nbsp;N Kollias, Markus M Schaumberger, Thomas C Kreutzer,&nbsp;et al
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2009
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/9f28967b276f47209285ef80e1e9f533
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spelling	oai:doaj.org-article:9f28967b276f47209285ef80e1e9f5332021-12-02T03:43:29ZTwo-step LASIK after penetrating keratoplasty1177-54671177-5483https://doaj.org/article/9f28967b276f47209285ef80e1e9f5332009-10-01T00:00:00Zhttp://www.dovepress.com/two-step-lasik-after-penetrating-keratoplasty-a3647https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Aris&nbsp;N Kollias, Markus M Schaumberger, Thomas C Kreutzer, Michael W Ulbig, Carlo A LackerbauerUniversity Eye Hospital,&nbsp;Ludwig-Maximilians University, Munich, GermanyPurpose: The point of interest of this retrospective case review is to study refractive changes caused by the hinged lamellar keratotomy and the refractive outcome after laser ablation in a second step within the scope of laser in situ keratomileusis (LASIK) in patients with penetrating keratoplasty.Methods: Data from eight patients obtained before lamellar keratotomy, before laser ablation, and three months later were evaluated. Keratotomies were performed with the Moria&reg; LSK one and the Amadeus&reg; 2 microkeratome, laser ablation was performed with the Schwind&reg; Keratome I and the Wavelight&reg; Allegretto WaveEyeQ. Results: Uncorrected visual acuity (UCVA) improved significantly from 1 [logMar] to 0.4 [logMar] at the last visit. Median gain of UCVA was 7.38 &plusmn; 2.96 Snellen lines. Best spectacle-corrected visual acuity did not change significantly. Preoperative manifest refraction spherical equivalent decreased from -4.02 &plusmn; 4.77 diopters (D) to -1.11 &plusmn; 2.45 D after laser ablation. Mean preoperative manifest astigmatism was -7.27 &plusmn; 3.65 D, after lamellar keratotomy -6.72 &plusmn; 3.68 D, and after laser ablation -2.08 &plusmn; 1.80 D. Manifest astigmatism did not change significantly after the keratotomy.Conclusions: Lamellar keratotomy causes biomechanical changes to the cornea. We favor a two-step LASIK in penetrating keratoplasty patients in order to improve precision and predictability of the refractive outcome.Keywords: two-step, cornea, LASIK, keratoplasty, astigmatism Aris&nbsp;N KolliasMarkus M SchaumbergerThomas C Kreutzer,&nbsp;et alDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2009, Iss default, Pp 581-586 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Aris&nbsp;N Kollias Markus M Schaumberger Thomas C Kreutzer,&nbsp;et al Two-step LASIK after penetrating keratoplasty
description	Aris&nbsp;N Kollias, Markus M Schaumberger, Thomas C Kreutzer, Michael W Ulbig, Carlo A LackerbauerUniversity Eye Hospital,&nbsp;Ludwig-Maximilians University, Munich, GermanyPurpose: The point of interest of this retrospective case review is to study refractive changes caused by the hinged lamellar keratotomy and the refractive outcome after laser ablation in a second step within the scope of laser in situ keratomileusis (LASIK) in patients with penetrating keratoplasty.Methods: Data from eight patients obtained before lamellar keratotomy, before laser ablation, and three months later were evaluated. Keratotomies were performed with the Moria&reg; LSK one and the Amadeus&reg; 2 microkeratome, laser ablation was performed with the Schwind&reg; Keratome I and the Wavelight&reg; Allegretto WaveEyeQ. Results: Uncorrected visual acuity (UCVA) improved significantly from 1 [logMar] to 0.4 [logMar] at the last visit. Median gain of UCVA was 7.38 &plusmn; 2.96 Snellen lines. Best spectacle-corrected visual acuity did not change significantly. Preoperative manifest refraction spherical equivalent decreased from -4.02 &plusmn; 4.77 diopters (D) to -1.11 &plusmn; 2.45 D after laser ablation. Mean preoperative manifest astigmatism was -7.27 &plusmn; 3.65 D, after lamellar keratotomy -6.72 &plusmn; 3.68 D, and after laser ablation -2.08 &plusmn; 1.80 D. Manifest astigmatism did not change significantly after the keratotomy.Conclusions: Lamellar keratotomy causes biomechanical changes to the cornea. We favor a two-step LASIK in penetrating keratoplasty patients in order to improve precision and predictability of the refractive outcome.Keywords: two-step, cornea, LASIK, keratoplasty, astigmatism
format	article
author	Aris&nbsp;N Kollias Markus M Schaumberger Thomas C Kreutzer,&nbsp;et al
author_facet	Aris&nbsp;N Kollias Markus M Schaumberger Thomas C Kreutzer,&nbsp;et al
author_sort	Aris&nbsp;N Kollias
title	Two-step LASIK after penetrating keratoplasty
title_short	Two-step LASIK after penetrating keratoplasty
title_full	Two-step LASIK after penetrating keratoplasty
title_fullStr	Two-step LASIK after penetrating keratoplasty
title_full_unstemmed	Two-step LASIK after penetrating keratoplasty
title_sort	two-step lasik after penetrating keratoplasty
publisher	Dove Medical Press
publishDate	2009
url	https://doaj.org/article/9f28967b276f47209285ef80e1e9f533
work_keys_str_mv	AT arisampnbspnkollias twosteplasikafterpenetratingkeratoplasty AT markusmschaumberger twosteplasikafterpenetratingkeratoplasty AT thomasckreutzerampnbspetal twosteplasikafterpenetratingkeratoplasty
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Two-step LASIK after penetrating keratoplasty

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