Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol

Manoj Motwani Motwani LASIK Institute, San Diego, CA 92121, USACorrespondence: Manoj MotwaniMotwani LASIK Institute, 4520 Executive Dr., Suite 230, San Diego, CA 92121, USATel +1 (858) 554-0008Email drmmlj@gmail.comPurpose: This study analyzes every eye that had an outcome greater than 0.25D of sphe...

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Autor principal:	Motwani M
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	astigmatism corneal epithelium femtosecond laser higher-order aberration lasik refractive error Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/86df49a002ce462aa2587c94ba4142a7
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spelling	oai:doaj.org-article:86df49a002ce462aa2587c94ba4142a72021-12-02T11:12:36ZAnalysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol1177-5483https://doaj.org/article/86df49a002ce462aa2587c94ba4142a72020-11-01T00:00:00Zhttps://www.dovepress.com/analysis-and-causation-of-all-inaccurate-outcomes-after-wavelight-cont-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Manoj Motwani Motwani LASIK Institute, San Diego, CA 92121, USACorrespondence: Manoj MotwaniMotwani LASIK Institute, 4520 Executive Dr., Suite 230, San Diego, CA 92121, USATel +1 (858) 554-0008Email drmmlj@gmail.comPurpose: This study analyzes every eye that had an outcome greater than 0.25D of sphere or astigmatism from planned goal after treatment with WaveLight Contoura with LYRA Protocol.Methods: The study included 266 consecutive eyes treated with LASIK Contoura using the LYRA Protocol. All LASIK procedures were performed on the WaveLight EX500 excimer laser. Flaps were created with either the Alcon WaveLight FS200 femtosecond laser or the Moria M2 microkeratome. Eyes that were off by > 0.25 diopters (D) sphere or cylinder from the targeted goal within 3 months after surgery were identified and analyzed for cause. Topographical, higher-order aberration, and epithelial maps were created.Results: Causes for inaccurate outcomes were biomechanical corneal change from LASK flap creation (9.78% of total eyes), pre-operative epithelial compensation of corneal higher-order aberration (4.1% of total eyes), changes to lamellar corneal tension from laser ablation causing a hyperopic shift (1.9% of total eyes), epithelial thickening over the ablation area post-operatively causing a refractive change (1.5% of total eyes), and posterior astigmatism (0.75%).Conclusion: The causes of the majority of inaccurate outcomes have not been properly defined and must be incorporated into further improving outcomes. Current and planned advances in technology do not address the majority of these causes.Keywords: astigmatism, corneal epithelium, femtosecond laser, higher-order aberration, LASIK, refractive error; Contoura; topography guided ablation; LYRA protocolMotwani MDove Medical Pressarticleastigmatismcorneal epitheliumfemtosecond laserhigher-order aberrationlasikrefractive errorOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 3841-3854 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	astigmatism corneal epithelium femtosecond laser higher-order aberration lasik refractive error Ophthalmology RE1-994
spellingShingle	astigmatism corneal epithelium femtosecond laser higher-order aberration lasik refractive error Ophthalmology RE1-994 Motwani M Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol
description	Manoj Motwani Motwani LASIK Institute, San Diego, CA 92121, USACorrespondence: Manoj MotwaniMotwani LASIK Institute, 4520 Executive Dr., Suite 230, San Diego, CA 92121, USATel +1 (858) 554-0008Email drmmlj@gmail.comPurpose: This study analyzes every eye that had an outcome greater than 0.25D of sphere or astigmatism from planned goal after treatment with WaveLight Contoura with LYRA Protocol.Methods: The study included 266 consecutive eyes treated with LASIK Contoura using the LYRA Protocol. All LASIK procedures were performed on the WaveLight EX500 excimer laser. Flaps were created with either the Alcon WaveLight FS200 femtosecond laser or the Moria M2 microkeratome. Eyes that were off by > 0.25 diopters (D) sphere or cylinder from the targeted goal within 3 months after surgery were identified and analyzed for cause. Topographical, higher-order aberration, and epithelial maps were created.Results: Causes for inaccurate outcomes were biomechanical corneal change from LASK flap creation (9.78% of total eyes), pre-operative epithelial compensation of corneal higher-order aberration (4.1% of total eyes), changes to lamellar corneal tension from laser ablation causing a hyperopic shift (1.9% of total eyes), epithelial thickening over the ablation area post-operatively causing a refractive change (1.5% of total eyes), and posterior astigmatism (0.75%).Conclusion: The causes of the majority of inaccurate outcomes have not been properly defined and must be incorporated into further improving outcomes. Current and planned advances in technology do not address the majority of these causes.Keywords: astigmatism, corneal epithelium, femtosecond laser, higher-order aberration, LASIK, refractive error; Contoura; topography guided ablation; LYRA protocol
format	article
author	Motwani M
author_facet	Motwani M
author_sort	Motwani M
title	Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol
title_short	Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol
title_full	Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol
title_fullStr	Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol
title_full_unstemmed	Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol
title_sort	analysis and causation of all inaccurate outcomes after wavelight contoura lasik with lyra protocol
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/86df49a002ce462aa2587c94ba4142a7
work_keys_str_mv	AT motwanim analysisandcausationofallinaccurateoutcomesafterwavelightcontouralasikwithlyraprotocol
_version_	1718396116654882816

Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol

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