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Two-step LASIK after penetrating keratoplasty

PURPOSE: 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...

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Autores principales: Kollias, Aris N, Schaumberger, Markus M, Kreutzer, Thomas C, Ulbig, Michael W, Lackerbauer, Carlo A
Formato: Texto
Lenguaje:English
Publicado: Dove Medical Press 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2773279/
https://www.ncbi.nlm.nih.gov/pubmed/19898662
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author Kollias, Aris N
Schaumberger, Markus M
Kreutzer, Thomas C
Ulbig, Michael W
Lackerbauer, Carlo A
author_facet Kollias, Aris N
Schaumberger, Markus M
Kreutzer, Thomas C
Ulbig, Michael W
Lackerbauer, Carlo A
author_sort Kollias, Aris N
collection PubMed
description PURPOSE: 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(®) LSK one and the Amadeus(®) 2 microkeratome, laser ablation was performed with the Schwind(®) Keratome I and the Wavelight(®) 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 ± 2.96 Snellen lines. Best spectacle-corrected visual acuity did not change significantly. Preoperative manifest refraction spherical equivalent decreased from −4.02 ± 4.77 diopters (D) to −1.11 ± 2.45 D after laser ablation. Mean preoperative manifest astigmatism was −7.27 ± 3.65 D, after lamellar keratotomy −6.72 ± 3.68 D, and after laser ablation −2.08 ± 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.
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spelling pubmed-27732792009-11-06 Two-step LASIK after penetrating keratoplasty Kollias, Aris N Schaumberger, Markus M Kreutzer, Thomas C Ulbig, Michael W Lackerbauer, Carlo A Clin Ophthalmol Original Research PURPOSE: 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(®) LSK one and the Amadeus(®) 2 microkeratome, laser ablation was performed with the Schwind(®) Keratome I and the Wavelight(®) 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 ± 2.96 Snellen lines. Best spectacle-corrected visual acuity did not change significantly. Preoperative manifest refraction spherical equivalent decreased from −4.02 ± 4.77 diopters (D) to −1.11 ± 2.45 D after laser ablation. Mean preoperative manifest astigmatism was −7.27 ± 3.65 D, after lamellar keratotomy −6.72 ± 3.68 D, and after laser ablation −2.08 ± 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. Dove Medical Press 2009 2009-11-02 /pmc/articles/PMC2773279/ /pubmed/19898662 Text en © 2009 Kollias et al, publisher and licensee Dove Medical Press Ltd. This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited.
spellingShingle Original Research
Kollias, Aris N
Schaumberger, Markus M
Kreutzer, Thomas C
Ulbig, Michael W
Lackerbauer, Carlo A
Two-step LASIK after penetrating keratoplasty
title 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_short Two-step LASIK after penetrating keratoplasty
title_sort two-step lasik after penetrating keratoplasty
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2773279/
https://www.ncbi.nlm.nih.gov/pubmed/19898662
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