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The use of WaveLight(®) Contoura to create a uniform cornea: the LYRA Protocol. Part 3: the results of 50 treated eyes

PURPOSE: To demonstrate how using the Wavelight Contoura measured astigmatism and axis eliminates corneal astigmatism and creates uniformly shaped corneas. PATIENTS AND METHODS: A retrospective analysis was conducted of the first 50 eyes to have bilateral full WaveLight(®) Contoura LASIK correction...

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Autor principal: Motwani, Manoj
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove Medical Press 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5440063/
https://www.ncbi.nlm.nih.gov/pubmed/28553071
http://dx.doi.org/10.2147/OPTH.S133841
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author Motwani, Manoj
author_facet Motwani, Manoj
author_sort Motwani, Manoj
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description PURPOSE: To demonstrate how using the Wavelight Contoura measured astigmatism and axis eliminates corneal astigmatism and creates uniformly shaped corneas. PATIENTS AND METHODS: A retrospective analysis was conducted of the first 50 eyes to have bilateral full WaveLight(®) Contoura LASIK correction of measured astigmatism and axis (vs conventional manifest refraction), using the Layer Yolked Reduction of Astigmatism Protocol in all cases. All patients had astigmatism corrected, and had at least 1 week of follow-up. Accuracy to desired refractive goal was assessed by postoperative refraction, aberration reduction via calculation of polynomials, and postoperative visions were analyzed as a secondary goal. RESULTS: The average difference of astigmatic power from manifest to measured was 0.5462D (with a range of 0–1.69D), and the average difference of axis was 14.94° (with a range of 0°–89°). Forty-seven of 50 eyes had a goal of plano, 3 had a monovision goal. Astigmatism was fully eliminated from all but 2 eyes, and 1 eye had regression with astigmatism. Of the eyes with plano as the goal, 80.85% were 20/15 or better, and 100% were 20/20 or better. Polynomial analysis postoperatively showed that at 6.5 mm, the average C3 was reduced by 86.5% and the average C5 by 85.14%. CONCLUSIONS: Using WaveLight(®) Contoura measured astigmatism and axis removes higher order aberrations and allows for the creation of a more uniform cornea with accurate removal of astigmatism, and reduction of aberration polynomials. WaveLight(®) Contoura successfully links the refractive correction layer and aberration repair layer using the Layer Yolked Reduction of Astigmatism Protocol to demonstrate how aberration removal can affect refractive correction.
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spelling pubmed-54400632017-05-26 The use of WaveLight(®) Contoura to create a uniform cornea: the LYRA Protocol. Part 3: the results of 50 treated eyes Motwani, Manoj Clin Ophthalmol Original Research PURPOSE: To demonstrate how using the Wavelight Contoura measured astigmatism and axis eliminates corneal astigmatism and creates uniformly shaped corneas. PATIENTS AND METHODS: A retrospective analysis was conducted of the first 50 eyes to have bilateral full WaveLight(®) Contoura LASIK correction of measured astigmatism and axis (vs conventional manifest refraction), using the Layer Yolked Reduction of Astigmatism Protocol in all cases. All patients had astigmatism corrected, and had at least 1 week of follow-up. Accuracy to desired refractive goal was assessed by postoperative refraction, aberration reduction via calculation of polynomials, and postoperative visions were analyzed as a secondary goal. RESULTS: The average difference of astigmatic power from manifest to measured was 0.5462D (with a range of 0–1.69D), and the average difference of axis was 14.94° (with a range of 0°–89°). Forty-seven of 50 eyes had a goal of plano, 3 had a monovision goal. Astigmatism was fully eliminated from all but 2 eyes, and 1 eye had regression with astigmatism. Of the eyes with plano as the goal, 80.85% were 20/15 or better, and 100% were 20/20 or better. Polynomial analysis postoperatively showed that at 6.5 mm, the average C3 was reduced by 86.5% and the average C5 by 85.14%. CONCLUSIONS: Using WaveLight(®) Contoura measured astigmatism and axis removes higher order aberrations and allows for the creation of a more uniform cornea with accurate removal of astigmatism, and reduction of aberration polynomials. WaveLight(®) Contoura successfully links the refractive correction layer and aberration repair layer using the Layer Yolked Reduction of Astigmatism Protocol to demonstrate how aberration removal can affect refractive correction. Dove Medical Press 2017-05-16 /pmc/articles/PMC5440063/ /pubmed/28553071 http://dx.doi.org/10.2147/OPTH.S133841 Text en © 2017 Motwani. 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.
spellingShingle Original Research
Motwani, Manoj
The use of WaveLight(®) Contoura to create a uniform cornea: the LYRA Protocol. Part 3: the results of 50 treated eyes
title The use of WaveLight(®) Contoura to create a uniform cornea: the LYRA Protocol. Part 3: the results of 50 treated eyes
title_full The use of WaveLight(®) Contoura to create a uniform cornea: the LYRA Protocol. Part 3: the results of 50 treated eyes
title_fullStr The use of WaveLight(®) Contoura to create a uniform cornea: the LYRA Protocol. Part 3: the results of 50 treated eyes
title_full_unstemmed The use of WaveLight(®) Contoura to create a uniform cornea: the LYRA Protocol. Part 3: the results of 50 treated eyes
title_short The use of WaveLight(®) Contoura to create a uniform cornea: the LYRA Protocol. Part 3: the results of 50 treated eyes
title_sort use of wavelight(®) contoura to create a uniform cornea: the lyra protocol. part 3: the results of 50 treated eyes
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5440063/
https://www.ncbi.nlm.nih.gov/pubmed/28553071
http://dx.doi.org/10.2147/OPTH.S133841
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