dc.contributor.author | García de Oteyza, Gonzalo | |
dc.contributor.author | Álvarez de Toledo, Juan | |
dc.contributor.author | Barraquer, Rafael I. | |
dc.contributor.author | Kling, Sabine | |
dc.date.accessioned | 2024-02-14T15:39:07Z | |
dc.date.available | 2024-02-14T15:39:07Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | García de Oteyza, Gonzalo; Álvarez de Toledo, Juan; Barraquer, Rafael I. [et al.]. Localized refractive changes induced by symmetric and progressive asymmetric intracorneal ring segments assessed with a 3D finite-element model. Bioengineering, 2023, 10(9), 1014. Disponible en: <https://www.mdpi.com/2306-5354/10/9/1014>. Fecha de acceso: 14 feb. 2024. DOI: 10.3390/bioengineering10091014 | ca |
dc.identifier.issn | 2306-5354 | ca |
dc.identifier.uri | http://hdl.handle.net/20.500.12328/4093 | |
dc.description.abstract | To build a representative 3D finite element model (FEM) for intracorneal ring segment (ICRS) implantation and to investigate localized optical changes induced by different ICRS geometries, a hyperelastic shell FEM was developed to compare the effect of symmetric and progressive asymmetric ICRS designs in a generic healthy and asymmetric keratoconic (KC) cornea. The resulting deformed geometry was assessed in terms of average curvature via a biconic fit, sagittal curvature (K), and optical aberrations via Zernike polynomials. The sagittal curvature map showed a locally restricted flattening interior to the ring (Kmax −11 to −25 dpt) and, in the KC cornea, an additional local steepening on the opposite half of the cornea (Kmax up to +1.9 dpt). Considering the optical aberrations present in the model of the KC cornea, the progressive ICRS corrected vertical coma (−3.42 vs. −3.13 µm); horizontal coma (−0.67 vs. 0.36 µm); and defocus (2.90 vs. 2.75 µm), oblique trefoil (−0.54 vs. −0.08 µm), and oblique secondary astigmatism (0.48 vs. −0.09 µm) aberrations stronger than the symmetric ICRS. Customized ICRS designs inspired by the underlying KC phenotype have the potential to achieve more tailored refractive corrections, particularly in asymmetric keratoconus patterns. | ca |
dc.format.extent | 12 | ca |
dc.language.iso | eng | ca |
dc.publisher | MDPI | ca |
dc.relation.ispartof | Bioengineering | ca |
dc.relation.ispartofseries | 10;9 | |
dc.rights | © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). | ca |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.subject.other | Model d'elements finits | ca |
dc.subject.other | Queratocon | ca |
dc.subject.other | Cirurgia refractiva | ca |
dc.subject.other | Biomecànica corneal | ca |
dc.subject.other | Elastografia | ca |
dc.subject.other | Model 3D | ca |
dc.subject.other | Modelo de elementos finitos | ca |
dc.subject.other | Queratocono | ca |
dc.subject.other | Cirugía refractiva | ca |
dc.subject.other | Biomecánica corneal | ca |
dc.subject.other | Elastografía | ca |
dc.subject.other | Modelo 3D | ca |
dc.subject.other | Finite element model | ca |
dc.subject.other | Keratoconus | ca |
dc.subject.other | Refractive surgery | ca |
dc.subject.other | Corneal biomechanics | ca |
dc.subject.other | Elastography | ca |
dc.subject.other | 3D model | ca |
dc.title | Localized refractive changes induced by symmetric and progressive asymmetric intracorneal ring segments assessed with a 3D finite-element model | ca |
dc.type | info:eu-repo/semantics/article | ca |
dc.description.version | info:eu-repo/semantics/publishedVersion | ca |
dc.rights.accessLevel | info:eu-repo/semantics/openAccess | |
dc.embargo.terms | cap | ca |
dc.subject.udc | 617 | ca |
dc.identifier.doi | https://dx.doi.org/10.3390/bioengineering10091014 | ca |