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Biomechanics of Corneal Ring Implants

To evaluate the biomechanics of corneal ring implants by providing a related mathematical theory and biomechanical model for the treatment of myopia and keratoconus. METHODS: The spherical dome model considers the inhomogeneity of the tunica of the eye, dimensions of the cornea, lamellar structure o...

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Detalles Bibliográficos
Autor principal: Daxer, Albert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cornea 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4598073/
https://www.ncbi.nlm.nih.gov/pubmed/26312619
http://dx.doi.org/10.1097/ICO.0000000000000591
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author Daxer, Albert
author_facet Daxer, Albert
author_sort Daxer, Albert
collection PubMed
description To evaluate the biomechanics of corneal ring implants by providing a related mathematical theory and biomechanical model for the treatment of myopia and keratoconus. METHODS: The spherical dome model considers the inhomogeneity of the tunica of the eye, dimensions of the cornea, lamellar structure of the corneal stroma, and asphericity of the cornea. It is used in this study for calculating a strengthening factor sf for the characterization of different ring-shaped corneal implant designs. The strengthening factor is a measure of the amount of strengthening of the cornea induced by the implant. RESULTS: For ring segments and incomplete rings, sf = 1.0, which indicates that these implants are not able to strengthen the cornea. The intracorneal continuous complete ring (MyoRing) has a strengthening factor of up to sf = 3.2. The MyoRing is, therefore, able to strengthen the cornea significantly. CONCLUSIONS: The result of the presented biomechanical analysis of different ring-shaped corneal implant designs can explain the different postoperative clinical results of different implant types in myopia and keratoconus.
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spelling pubmed-45980732015-10-29 Biomechanics of Corneal Ring Implants Daxer, Albert Cornea Basic Investigation To evaluate the biomechanics of corneal ring implants by providing a related mathematical theory and biomechanical model for the treatment of myopia and keratoconus. METHODS: The spherical dome model considers the inhomogeneity of the tunica of the eye, dimensions of the cornea, lamellar structure of the corneal stroma, and asphericity of the cornea. It is used in this study for calculating a strengthening factor sf for the characterization of different ring-shaped corneal implant designs. The strengthening factor is a measure of the amount of strengthening of the cornea induced by the implant. RESULTS: For ring segments and incomplete rings, sf = 1.0, which indicates that these implants are not able to strengthen the cornea. The intracorneal continuous complete ring (MyoRing) has a strengthening factor of up to sf = 3.2. The MyoRing is, therefore, able to strengthen the cornea significantly. CONCLUSIONS: The result of the presented biomechanical analysis of different ring-shaped corneal implant designs can explain the different postoperative clinical results of different implant types in myopia and keratoconus. Cornea 2015-09-10 2015-11 /pmc/articles/PMC4598073/ /pubmed/26312619 http://dx.doi.org/10.1097/ICO.0000000000000591 Text en Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BYNCND), which permits downloading and sharing the work provided it is properly cited. The work cannot be changed in any way or used commercially.
spellingShingle Basic Investigation
Daxer, Albert
Biomechanics of Corneal Ring Implants
title Biomechanics of Corneal Ring Implants
title_full Biomechanics of Corneal Ring Implants
title_fullStr Biomechanics of Corneal Ring Implants
title_full_unstemmed Biomechanics of Corneal Ring Implants
title_short Biomechanics of Corneal Ring Implants
title_sort biomechanics of corneal ring implants
topic Basic Investigation
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4598073/
https://www.ncbi.nlm.nih.gov/pubmed/26312619
http://dx.doi.org/10.1097/ICO.0000000000000591
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