Optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes

Arthur B Cummings,1 Gabrielle E Kelly21Wellington Eye Clinic, Dublin, Ireland; 2School of Mathematical Sciences, University College Dublin, Dublin, IrelandPurpose: To compare the safety, efficacy, and predictability of laser in situ keratomileusis treatments at 1 year postprocedure using a novel geo...

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Autores principales:	Cummings AB, Kelly GE
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/ebc5af2d4ac24f3e828e2357eb2c8681
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spelling	oai:doaj.org-article:ebc5af2d4ac24f3e828e2357eb2c86812021-12-02T03:31:35ZOptical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes1177-54671177-5483https://doaj.org/article/ebc5af2d4ac24f3e828e2357eb2c86812013-06-01T00:00:00Zhttp://www.dovepress.com/optical-ray-tracing-guided-myopic-laser-in-situ-keratomileusis-1-year--a13328https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Arthur B Cummings,1 Gabrielle E Kelly21Wellington Eye Clinic, Dublin, Ireland; 2School of Mathematical Sciences, University College Dublin, Dublin, IrelandPurpose: To compare the safety, efficacy, and predictability of laser in situ keratomileusis treatments at 1 year postprocedure using a novel geometric ray tracing algorithm with outcomes of treatments using wavefront-optimized, wavefront-guided, and topography-guided ablation profiles of an excimer laser (WaveLight GmbH, Erlangen, Germany; Alcon Laboratories, Fort Worth, TX, USA).Setting: Wellington Eye Clinic, Dublin, Ireland.Design: Retrospective comparative case series.Methods: Eyes having a preoperative myopic spherical equivalent refractive error >4.00 D and/or astigmatism between 2.00–6.00 D resulting in a spherical equivalent power greater than −4.00 D received laser in situ keratomileusis treatments using a ray tracing algorithm. Refractive outcomes were analyzed postoperatively at 6 and 12 months and were compared to outcomes of wavefront-optimized, wavefront-guided, and topography-guided treatments in eyes with the same pretreatment refractive range.Results: Forty-seven eyes of 26 patients were treated using the ray tracing algorithm. At 12 months postprocedure, uncorrected visual acuity was better than the preoperative best-corrected visual acuity in this group. The percentage of eyes achieving an uncorrected visual acuity or best-corrected visual acuity ≥20/20 significantly exceeded the rates achieved in the wavefront-optimized and topography-guided groups. A greater percentage of eyes achieved an uncorrected visual acuity ≥20/20 and ≥20/16 in the wavefront-guided group, but no eyes in the wavefront-guided group had an uncorrected visual acuity ≥20/12.5 in comparison to 9.5% of eyes in the ray tracing group.Conclusion: This study provides further evidence of the safety, efficacy, and predictability of laser in situ keratomileusis outcomes using an optical ray tracing algorithm to treat moderate to high myopic astigmatism and shows that good results are sustained through 1 year.Keywords: LASIK, optical ray tracing, wavefront-guided, wavefront-optimized, topography-guided, ablation profiles, Gullstrand eye modelCummings ABKelly GEDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2013, Iss default, Pp 1181-1191 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Cummings AB Kelly GE Optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes
description	Arthur B Cummings,1 Gabrielle E Kelly21Wellington Eye Clinic, Dublin, Ireland; 2School of Mathematical Sciences, University College Dublin, Dublin, IrelandPurpose: To compare the safety, efficacy, and predictability of laser in situ keratomileusis treatments at 1 year postprocedure using a novel geometric ray tracing algorithm with outcomes of treatments using wavefront-optimized, wavefront-guided, and topography-guided ablation profiles of an excimer laser (WaveLight GmbH, Erlangen, Germany; Alcon Laboratories, Fort Worth, TX, USA).Setting: Wellington Eye Clinic, Dublin, Ireland.Design: Retrospective comparative case series.Methods: Eyes having a preoperative myopic spherical equivalent refractive error >4.00 D and/or astigmatism between 2.00–6.00 D resulting in a spherical equivalent power greater than −4.00 D received laser in situ keratomileusis treatments using a ray tracing algorithm. Refractive outcomes were analyzed postoperatively at 6 and 12 months and were compared to outcomes of wavefront-optimized, wavefront-guided, and topography-guided treatments in eyes with the same pretreatment refractive range.Results: Forty-seven eyes of 26 patients were treated using the ray tracing algorithm. At 12 months postprocedure, uncorrected visual acuity was better than the preoperative best-corrected visual acuity in this group. The percentage of eyes achieving an uncorrected visual acuity or best-corrected visual acuity ≥20/20 significantly exceeded the rates achieved in the wavefront-optimized and topography-guided groups. A greater percentage of eyes achieved an uncorrected visual acuity ≥20/20 and ≥20/16 in the wavefront-guided group, but no eyes in the wavefront-guided group had an uncorrected visual acuity ≥20/12.5 in comparison to 9.5% of eyes in the ray tracing group.Conclusion: This study provides further evidence of the safety, efficacy, and predictability of laser in situ keratomileusis outcomes using an optical ray tracing algorithm to treat moderate to high myopic astigmatism and shows that good results are sustained through 1 year.Keywords: LASIK, optical ray tracing, wavefront-guided, wavefront-optimized, topography-guided, ablation profiles, Gullstrand eye model
format	article
author	Cummings AB Kelly GE
author_facet	Cummings AB Kelly GE
author_sort	Cummings AB
title	Optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes
title_short	Optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes
title_full	Optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes
title_fullStr	Optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes
title_full_unstemmed	Optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes
title_sort	optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/ebc5af2d4ac24f3e828e2357eb2c8681
work_keys_str_mv	AT cummingsab opticalraytracingguidedmyopiclaserinsitukeratomileusis1yearclinicaloutcomes AT kellyge opticalraytracingguidedmyopiclaserinsitukeratomileusis1yearclinicaloutcomes
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Optical ray tracing-guided myopic laser in situ keratomileusis: 1-year clinical outcomes

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