Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy

BACKGROUND: The purpose of this study was to evaluate the effects of laser-assisted in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) on corneal biomechanical properties. METHODS: We used the ocular response analyzer to measure corneal hysteresis (CH) and corneal resistance factor...

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Autores principales: Hwang, Eileen S, Stagg, Brian C, Swan, Russell, Fenzl, Carlton R, McFadden, Molly, Muthappan, Valliammai, Santiago-Caban, Luis, Mifflin, Mark D, Moshirfar, Majid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove Medical Press 2017
Materias:
Original Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5633312/
https://www.ncbi.nlm.nih.gov/pubmed/29042748
http://dx.doi.org/10.2147/OPTH.S142821
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author Hwang, Eileen S
Stagg, Brian C
Swan, Russell
Fenzl, Carlton R
McFadden, Molly
Muthappan, Valliammai
Santiago-Caban, Luis
Mifflin, Mark D
Moshirfar, Majid
author_facet Hwang, Eileen S
Stagg, Brian C
Swan, Russell
Fenzl, Carlton R
McFadden, Molly
Muthappan, Valliammai
Santiago-Caban, Luis
Mifflin, Mark D
Moshirfar, Majid
author_sort Hwang, Eileen S
collection PubMed
description BACKGROUND: The purpose of this study was to evaluate the effects of laser-assisted in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) on corneal biomechanical properties. METHODS: We used the ocular response analyzer to measure corneal hysteresis (CH) and corneal resistance factor (CRF) before and after refractive surgery. RESULTS: In all, 230 eyes underwent LASIK and 115 eyes underwent PRK without mitomycin C (MMC). Both procedures decreased CH and CRF from baseline. When MMC was used after PRK in 20 eyes, it resulted in lower corneal biomechanical properties at 3 months when compared to the other procedures, but all three procedures had similar values at 12 months. CONCLUSION: Significant but similar decreases in corneal biomechanical properties after LASIK, PRK without MMC, and PRK with MMC were noted.
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spelling pubmed-56333122017-10-17 Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy Hwang, Eileen S Stagg, Brian C Swan, Russell Fenzl, Carlton R McFadden, Molly Muthappan, Valliammai Santiago-Caban, Luis Mifflin, Mark D Moshirfar, Majid Clin Ophthalmol Original Research BACKGROUND: The purpose of this study was to evaluate the effects of laser-assisted in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) on corneal biomechanical properties. METHODS: We used the ocular response analyzer to measure corneal hysteresis (CH) and corneal resistance factor (CRF) before and after refractive surgery. RESULTS: In all, 230 eyes underwent LASIK and 115 eyes underwent PRK without mitomycin C (MMC). Both procedures decreased CH and CRF from baseline. When MMC was used after PRK in 20 eyes, it resulted in lower corneal biomechanical properties at 3 months when compared to the other procedures, but all three procedures had similar values at 12 months. CONCLUSION: Significant but similar decreases in corneal biomechanical properties after LASIK, PRK without MMC, and PRK with MMC were noted. Dove Medical Press 2017-10-03 /pmc/articles/PMC5633312/ /pubmed/29042748 http://dx.doi.org/10.2147/OPTH.S142821 Text en © 2017 Hwang et al. 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
Hwang, Eileen S
Stagg, Brian C
Swan, Russell
Fenzl, Carlton R
McFadden, Molly
Muthappan, Valliammai
Santiago-Caban, Luis
Mifflin, Mark D
Moshirfar, Majid
Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy
title Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy
title_full Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy
title_fullStr Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy
title_full_unstemmed Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy
title_short Corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy
title_sort corneal biomechanical properties after laser-assisted in situ keratomileusis and photorefractive keratectomy
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5633312/
https://www.ncbi.nlm.nih.gov/pubmed/29042748
http://dx.doi.org/10.2147/OPTH.S142821
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