Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine

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: To identify the laser programming strategy that achieves the highest refracti...

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Autor principal:	Motwani M
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	contoura topographic guided ablation lyra protocol phorcides uniform cornea Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/0656230701284288a06b20c25fb460da
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spelling	oai:doaj.org-article:0656230701284288a06b20c25fb460da2021-12-02T04:01:53ZPredictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine1177-5483https://doaj.org/article/0656230701284288a06b20c25fb460da2020-10-01T00:00:00Zhttps://www.dovepress.com/predictions-of-residual-astigmatism-from-surgical-planning-for-topogra-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: To identify the laser programming strategy that achieves the highest refractive astigmatism outcomes accuracy between LYRA surgical planning and Phorcides surgical planning.Methods: One hundred one eyes successfully treated with Contoura with LYRA Protocol were retrospectively surgically planned with Phorcides to determine its accuracy. Eighteen eyes that had inaccurate 3 month outcomes with LYRA were also retrospectively planned with Phorcides. Two patients with one eye treated with LYRA and one with Phorcides surgical planning were analyzed for outcomes.Results: Retrospective Phorcides surgical planning deviated from already successful treatments with LYRA Protocol 51% of the time, with an average astigmatic deviation of 0.69 diopters (D) and an average deviation of 7.1 degrees. The percentage of eyes of the 101 successfully treated with LYRA Protocol then planned with Phorcides differed by 0.5D in 19.8%, by 0.75D in 23.8%, and by 1D in 7.9%. A retrospective analysis with Phorcides of patients treated with LYRA Protocol with residual post-operative astigmatism demonstrated that Phorcides would have increased accuracy in only 33% of patients, and not helped or decreased accuracy in the rest.Conclusion: Phorcides was significantly less accurate in surgical planning than the LYRA Protocol overall and a 51% of primary patients could have a likelihood of significant residual astigmatism. Phorcides would also have provided a less accurate outcome in the majority of patients that needed secondary enhancement.Keywords: Contoura, topographic-guided ablation, LYRA Protocol, Phorcides, uniform corneaMotwani MDove Medical Pressarticlecontouratopographic guided ablationlyra protocolphorcidesuniform corneaOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 3227-3236 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	contoura topographic guided ablation lyra protocol phorcides uniform cornea Ophthalmology RE1-994
spellingShingle	contoura topographic guided ablation lyra protocol phorcides uniform cornea Ophthalmology RE1-994 Motwani M Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine
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: To identify the laser programming strategy that achieves the highest refractive astigmatism outcomes accuracy between LYRA surgical planning and Phorcides surgical planning.Methods: One hundred one eyes successfully treated with Contoura with LYRA Protocol were retrospectively surgically planned with Phorcides to determine its accuracy. Eighteen eyes that had inaccurate 3 month outcomes with LYRA were also retrospectively planned with Phorcides. Two patients with one eye treated with LYRA and one with Phorcides surgical planning were analyzed for outcomes.Results: Retrospective Phorcides surgical planning deviated from already successful treatments with LYRA Protocol 51% of the time, with an average astigmatic deviation of 0.69 diopters (D) and an average deviation of 7.1 degrees. The percentage of eyes of the 101 successfully treated with LYRA Protocol then planned with Phorcides differed by 0.5D in 19.8%, by 0.75D in 23.8%, and by 1D in 7.9%. A retrospective analysis with Phorcides of patients treated with LYRA Protocol with residual post-operative astigmatism demonstrated that Phorcides would have increased accuracy in only 33% of patients, and not helped or decreased accuracy in the rest.Conclusion: Phorcides was significantly less accurate in surgical planning than the LYRA Protocol overall and a 51% of primary patients could have a likelihood of significant residual astigmatism. Phorcides would also have provided a less accurate outcome in the majority of patients that needed secondary enhancement.Keywords: Contoura, topographic-guided ablation, LYRA Protocol, Phorcides, uniform cornea
format	article
author	Motwani M
author_facet	Motwani M
author_sort	Motwani M
title	Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine
title_short	Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine
title_full	Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine
title_fullStr	Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine
title_full_unstemmed	Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine
title_sort	predictions of residual astigmatism from surgical planning for topographic-guided lasik based on anterior corneal astigmatism (lyra protocol) vs the phorcides analytic engine
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/0656230701284288a06b20c25fb460da
work_keys_str_mv	AT motwanim predictionsofresidualastigmatismfromsurgicalplanningfortopographicguidedlasikbasedonanteriorcornealastigmatismlyraprotocolvsthephorcidesanalyticengine
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Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine

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