LASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?

Andreas Frings,1 Gisbert Richard,1,2 Johannes Steinberg,1,3,4 Vasyl Druchkiv,1,4 Stephan Johannes Linke,1,3,4 Toam Katz1,4 1Department of Ophthalmology, University Medical Centre Hamburg-Eppendorf, 2Ophthalmologikum an der Alster, 3zentrumsehstärke, 4CARE Vision Germany GmbH, Hamburg, Germ...

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Autores principales:	Frings A, Richard G, Steinberg J, Druchkiv V, Linke SJ, Katz T
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2016
Materias:	Hyperopia LASIK PRK Regression Retreatment Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/c86222687018490d98bf37092cfa3d05
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spelling	oai:doaj.org-article:c86222687018490d98bf37092cfa3d052021-12-02T07:20:30ZLASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?1177-5483https://doaj.org/article/c86222687018490d98bf37092cfa3d052016-03-01T00:00:00Zhttps://www.dovepress.com/lasik-and-prk-in-hyperopic-astigmatic-eyes-is-early-retreatment-advisa-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Andreas Frings,1 Gisbert Richard,1,2 Johannes Steinberg,1,3,4 Vasyl Druchkiv,1,4 Stephan Johannes Linke,1,3,4 Toam Katz1,4 1Department of Ophthalmology, University Medical Centre Hamburg-Eppendorf, 2Ophthalmologikum an der Alster, 3zentrumsehstärke, 4CARE Vision Germany GmbH, Hamburg, Germany Purpose: To analyze the refractive and keratometric stability in hyperopic astigmatic laser in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK) during the first 6 months after surgery. Patients and methods: This retrospective cross-sectional study included 97 hyperopic eyes; 55 were treated with LASIK and 42 with PRK. Excimer ablation for all eyes was performed using the ALLEGRETTO excimer laser platform using a mitomycin C for PRK and a mechanical microkeratome for LASIK. Keratometric and refractive data were analyzed during three consecutive follow-up intervals (6 weeks, 3 months, and 6 months). The corneal topography was obtained using Scheimpflug topography, and subjective refractions were acquired by expert optometrists according to a standardized protocol. Results: After 3 months, mean keratometry and spherical equivalent were stable after LASIK, whereas PRK-treated eyes presented statistically significant (P<0.001) regression of hyperopia. In eleven cases, hyperopic regression of >1 D occurred. The optical zone diameter did not correlate with the development of regression. Conclusion: After corneal laser refractive surgery, keratometric changes are followed by refractive changes and they occur up to 6 months after LASIK and for at least 6 months after PRK, and therefore, caution should be applied when retreatment is planned during the 1st year after surgery because hyperopic refractive regression can lead to suboptimal visual outcome. Keratometric and refractive stability is earlier achieved after LASIK, and therefore, retreatment may be independent of late regression. Keywords: hyperopia, astigmatism, regression, keratometryFrings ARichard GSteinberg JDruchkiv VLinke SJKatz TDove Medical PressarticleHyperopiaLASIKPRKRegressionRetreatmentOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2016, Iss Issue 1, Pp 565-570 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Hyperopia LASIK PRK Regression Retreatment Ophthalmology RE1-994
spellingShingle	Hyperopia LASIK PRK Regression Retreatment Ophthalmology RE1-994 Frings A Richard G Steinberg J Druchkiv V Linke SJ Katz T LASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?
description	Andreas Frings,1 Gisbert Richard,1,2 Johannes Steinberg,1,3,4 Vasyl Druchkiv,1,4 Stephan Johannes Linke,1,3,4 Toam Katz1,4 1Department of Ophthalmology, University Medical Centre Hamburg-Eppendorf, 2Ophthalmologikum an der Alster, 3zentrumsehstärke, 4CARE Vision Germany GmbH, Hamburg, Germany Purpose: To analyze the refractive and keratometric stability in hyperopic astigmatic laser in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK) during the first 6 months after surgery. Patients and methods: This retrospective cross-sectional study included 97 hyperopic eyes; 55 were treated with LASIK and 42 with PRK. Excimer ablation for all eyes was performed using the ALLEGRETTO excimer laser platform using a mitomycin C for PRK and a mechanical microkeratome for LASIK. Keratometric and refractive data were analyzed during three consecutive follow-up intervals (6 weeks, 3 months, and 6 months). The corneal topography was obtained using Scheimpflug topography, and subjective refractions were acquired by expert optometrists according to a standardized protocol. Results: After 3 months, mean keratometry and spherical equivalent were stable after LASIK, whereas PRK-treated eyes presented statistically significant (P<0.001) regression of hyperopia. In eleven cases, hyperopic regression of >1 D occurred. The optical zone diameter did not correlate with the development of regression. Conclusion: After corneal laser refractive surgery, keratometric changes are followed by refractive changes and they occur up to 6 months after LASIK and for at least 6 months after PRK, and therefore, caution should be applied when retreatment is planned during the 1st year after surgery because hyperopic refractive regression can lead to suboptimal visual outcome. Keratometric and refractive stability is earlier achieved after LASIK, and therefore, retreatment may be independent of late regression. Keywords: hyperopia, astigmatism, regression, keratometry
format	article
author	Frings A Richard G Steinberg J Druchkiv V Linke SJ Katz T
author_facet	Frings A Richard G Steinberg J Druchkiv V Linke SJ Katz T
author_sort	Frings A
title	LASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?
title_short	LASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?
title_full	LASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?
title_fullStr	LASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?
title_full_unstemmed	LASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?
title_sort	lasik and prk in hyperopic astigmatic eyes: is early retreatment advisable?
publisher	Dove Medical Press
publishDate	2016
url	https://doaj.org/article/c86222687018490d98bf37092cfa3d05
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LASIK and PRK in hyperopic astigmatic eyes: is early retreatment advisable?

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