Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery

Purpose: To evaluate the visual, refractive, topographic, pachymetric, and biomechanical outcomes after intracorneal ring segment implantation in corneas with post-LASIK ectasia. Methods: Retrospective longitudinal study enrolling 26 eyes of 22 patients with post-LASIK ectasia and undergoing intraco...

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Autores: Peris-Martínez C, Bueno-Gimeno I, Alvarez-Arana I, Piñero DP, Gené-Sampedro A
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO)
Repositorio:r-FISABIO. Repositorio Institucional de Producción Científica
OAI Identifier:oai:fisabio.fundanetsuite.com:p2564
Acceso en línea:https://fisabio.portalinvestigacion.com/publicaciones/2564
Access Level:acceso abierto
Palabra clave:Corneal ectasia
intracorneal ring segment
post-LASIK ectasia
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spelling Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgeryPeris-Martínez CBueno-Gimeno IAlvarez-Arana IPiñero DPGené-Sampedro ACorneal ectasiaintracorneal ring segmentpost-LASIK ectasiaPurpose: To evaluate the visual, refractive, topographic, pachymetric, and biomechanical outcomes after intracorneal ring segment implantation in corneas with post-LASIK ectasia. Methods: Retrospective longitudinal study enrolling 26 eyes of 22 patients with post-LASIK ectasia and undergoing intracorneal ring segment implantation (KeraRing (R), Mediphacos) using a 60-kHz femtosecond laser (IntraLase (R), IntraLase Corp.) for corneal tunnelization. Visual, refractive, anterior, and posterior corneal topographic (Pentacam HR, Oculus), pachymetric, and corneal biomechanical changes (Ocular response Analyzer, Reichert) were evaluated during a 12-month follow-up. Vector analysis of astigmatic changes was performed. Results: A statistically significant reduction of sphere (p = 0.043) was observed at 1 month after surgery, with a significant improvement of uncorrected distance visual acuity associated (p = 0.019). Likewise, a significant reduction of anterior corneal power measurements (p <= 0.014) and steepest posterior keratometric reading (p = 0.006) were observed at 1 month postoperatively, with no significant changes afterwards (p > 0.133). No significant changes were observed in manifest cylinder (p > 0.175), corrected distance visual acuity (p > 0.174), flattest posterior keratometric measurement (p > 0.282), volumetric measurements (p > 0.051), and corneal biomechanical parameters (p > 0.068). Vector analysis revealed an initial trend to overcorrection of astigmatism, with a trend to undercorrection at the end of follow-up and a significant variability in the outcome achieved in each patient. Conclusion: The implantation of KeraRing segments in post-LASIK corneal ectasia generates a significant modification of spherical refraction and a visual improvement due to a central corneal flattening generated. More refined nomograms of implantation in these cases should be developed to achieve a more predictable correction of astigmatism.SAGE PUBLICATIONS LTD2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://fisabio.portalinvestigacion.com/publicaciones/2564EUROPEAN JOURNAL OF OPHTHALMOLOGYISSN: 11206721ISSNe: 17246016reponame:r-FISABIO. Repositorio Institucional de Producción Científicainstname:Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO)Inglésinfo:eu-repo/semantics/openAccessoai:fisabio.fundanetsuite.com:p25642026-06-11T12:45:17Z
dc.title.none.fl_str_mv Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery
title Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery
spellingShingle Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery
Peris-Martínez C
Corneal ectasia
intracorneal ring segment
post-LASIK ectasia
title_short Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery
title_full Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery
title_fullStr Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery
title_full_unstemmed Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery
title_sort Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery
dc.creator.none.fl_str_mv Peris-Martínez C
Bueno-Gimeno I
Alvarez-Arana I
Piñero DP
Gené-Sampedro A
author Peris-Martínez C
author_facet Peris-Martínez C
Bueno-Gimeno I
Alvarez-Arana I
Piñero DP
Gené-Sampedro A
author_role author
author2 Bueno-Gimeno I
Alvarez-Arana I
Piñero DP
Gené-Sampedro A
author2_role author
author
author
author
dc.subject.none.fl_str_mv Corneal ectasia
intracorneal ring segment
post-LASIK ectasia
topic Corneal ectasia
intracorneal ring segment
post-LASIK ectasia
description Purpose: To evaluate the visual, refractive, topographic, pachymetric, and biomechanical outcomes after intracorneal ring segment implantation in corneas with post-LASIK ectasia. Methods: Retrospective longitudinal study enrolling 26 eyes of 22 patients with post-LASIK ectasia and undergoing intracorneal ring segment implantation (KeraRing (R), Mediphacos) using a 60-kHz femtosecond laser (IntraLase (R), IntraLase Corp.) for corneal tunnelization. Visual, refractive, anterior, and posterior corneal topographic (Pentacam HR, Oculus), pachymetric, and corneal biomechanical changes (Ocular response Analyzer, Reichert) were evaluated during a 12-month follow-up. Vector analysis of astigmatic changes was performed. Results: A statistically significant reduction of sphere (p = 0.043) was observed at 1 month after surgery, with a significant improvement of uncorrected distance visual acuity associated (p = 0.019). Likewise, a significant reduction of anterior corneal power measurements (p <= 0.014) and steepest posterior keratometric reading (p = 0.006) were observed at 1 month postoperatively, with no significant changes afterwards (p > 0.133). No significant changes were observed in manifest cylinder (p > 0.175), corrected distance visual acuity (p > 0.174), flattest posterior keratometric measurement (p > 0.282), volumetric measurements (p > 0.051), and corneal biomechanical parameters (p > 0.068). Vector analysis revealed an initial trend to overcorrection of astigmatism, with a trend to undercorrection at the end of follow-up and a significant variability in the outcome achieved in each patient. Conclusion: The implantation of KeraRing segments in post-LASIK corneal ectasia generates a significant modification of spherical refraction and a visual improvement due to a central corneal flattening generated. More refined nomograms of implantation in these cases should be developed to achieve a more predictable correction of astigmatism.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://fisabio.portalinvestigacion.com/publicaciones/2564
url https://fisabio.portalinvestigacion.com/publicaciones/2564
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv SAGE PUBLICATIONS LTD
publisher.none.fl_str_mv SAGE PUBLICATIONS LTD
dc.source.none.fl_str_mv EUROPEAN JOURNAL OF OPHTHALMOLOGY
ISSN: 11206721
ISSNe: 17246016
reponame:r-FISABIO. Repositorio Institucional de Producción Científica
instname:Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO)
instname_str Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO)
reponame_str r-FISABIO. Repositorio Institucional de Producción Científica
collection r-FISABIO. Repositorio Institucional de Producción Científica
repository.name.fl_str_mv
repository.mail.fl_str_mv
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