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

PURPOSE: 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 procedu...

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Autor principal: Motwani, Manoj
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672711/
https://www.ncbi.nlm.nih.gov/pubmed/33223821
http://dx.doi.org/10.2147/OPTH.S267091
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author Motwani, Manoj
author_facet Motwani, Manoj
author_sort Motwani, Manoj
collection PubMed
description PURPOSE: 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.
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spelling pubmed-76727112020-11-20 Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol Motwani, Manoj Clin Ophthalmol Original Research PURPOSE: 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. Dove 2020-11-13 /pmc/articles/PMC7672711/ /pubmed/33223821 http://dx.doi.org/10.2147/OPTH.S267091 Text en © 2020 Motwani. http://creativecommons.org/licenses/by-nc/3.0/ This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms (https://www.dovepress.com/terms.php).
spellingShingle Original Research
Motwani, Manoj
Analysis and Causation of All Inaccurate Outcomes After WaveLight Contoura LASIK with LYRA Protocol
title 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_short 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
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672711/
https://www.ncbi.nlm.nih.gov/pubmed/33223821
http://dx.doi.org/10.2147/OPTH.S267091
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