Assessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia

Abstract To evaluate the repeatability of Corvis ST corneal biomechanical, tonometry and pachymetry measurements, and agreement of pachymetry measures with the Pentacam HR and RTVue OCT. Three consecutive measurements of the right eye of 238 myopic subjects were acquired with the Corvis ST, Pentacam...

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Autores principales:	Xiaorui Wang, Colm McAlinden, Hongbing Zhang, Jie Yan, Dan Wang, Wei Wei, Shengjian Mi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4c425a7bf7cf41afa8d05088f92a24d0
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spelling	oai:doaj.org-article:4c425a7bf7cf41afa8d05088f92a24d02021-12-02T14:06:50ZAssessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia10.1038/s41598-020-80915-92045-2322https://doaj.org/article/4c425a7bf7cf41afa8d05088f92a24d02021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80915-9https://doaj.org/toc/2045-2322Abstract To evaluate the repeatability of Corvis ST corneal biomechanical, tonometry and pachymetry measurements, and agreement of pachymetry measures with the Pentacam HR and RTVue OCT. Three consecutive measurements of the right eye of 238 myopic subjects were acquired with the Corvis ST, Pentacam HR, and RTVue OCT. Repeatability of Corvis ST was evaluated by within-subject standard deviation [Sw] and repeatability limit [r]. The agreement of central corneal thickness (CCT) measurements were compared among the three instruments using the Bland–Altman limits of agreement. Comparisons were further stratified by CCT (Corneathin ≤ 500 µm; Corneanormal = 500–550 µm; Corneathick > 550 µm). Sw was below 1 mmHg in Corneathin, Corneanormal, and Corneathick groups for IOP and bIOP. Sw for SP-A1 were 4.880, 6.128, 7.719 mmHg/mm respectively. Sw for CBI were 0.228, 0.157, 0.076, and correspondingly Sw for TBI and SSI were 0.094 and 0.056, 0.079 and 0.053, 0.070 and 0.053. The Bland–Altman plots for CCT implied poor agreement with mean differences of 29.49 µm between Corvis and OCT, 9.33 µm between Pentacam and OCT, and 20.16 µm between Corvis and Pentacam. The Corvis ST showed good repeatability with the exception of CBI in the various CCT groups. The CCT measured by Corvis ST was not interchangeable with Pentacam HR and RTVue OCT.Xiaorui WangColm McAlindenHongbing ZhangJie YanDan WangWei WeiShengjian MiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiaorui Wang Colm McAlinden Hongbing Zhang Jie Yan Dan Wang Wei Wei Shengjian Mi Assessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia
description	Abstract To evaluate the repeatability of Corvis ST corneal biomechanical, tonometry and pachymetry measurements, and agreement of pachymetry measures with the Pentacam HR and RTVue OCT. Three consecutive measurements of the right eye of 238 myopic subjects were acquired with the Corvis ST, Pentacam HR, and RTVue OCT. Repeatability of Corvis ST was evaluated by within-subject standard deviation [Sw] and repeatability limit [r]. The agreement of central corneal thickness (CCT) measurements were compared among the three instruments using the Bland–Altman limits of agreement. Comparisons were further stratified by CCT (Corneathin ≤ 500 µm; Corneanormal = 500–550 µm; Corneathick > 550 µm). Sw was below 1 mmHg in Corneathin, Corneanormal, and Corneathick groups for IOP and bIOP. Sw for SP-A1 were 4.880, 6.128, 7.719 mmHg/mm respectively. Sw for CBI were 0.228, 0.157, 0.076, and correspondingly Sw for TBI and SSI were 0.094 and 0.056, 0.079 and 0.053, 0.070 and 0.053. The Bland–Altman plots for CCT implied poor agreement with mean differences of 29.49 µm between Corvis and OCT, 9.33 µm between Pentacam and OCT, and 20.16 µm between Corvis and Pentacam. The Corvis ST showed good repeatability with the exception of CBI in the various CCT groups. The CCT measured by Corvis ST was not interchangeable with Pentacam HR and RTVue OCT.
format	article
author	Xiaorui Wang Colm McAlinden Hongbing Zhang Jie Yan Dan Wang Wei Wei Shengjian Mi
author_facet	Xiaorui Wang Colm McAlinden Hongbing Zhang Jie Yan Dan Wang Wei Wei Shengjian Mi
author_sort	Xiaorui Wang
title	Assessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia
title_short	Assessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia
title_full	Assessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia
title_fullStr	Assessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia
title_full_unstemmed	Assessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia
title_sort	assessment of corneal biomechanics, tonometry and pachymetry with the corvis st in myopia
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4c425a7bf7cf41afa8d05088f92a24d0
work_keys_str_mv	AT xiaoruiwang assessmentofcornealbiomechanicstonometryandpachymetrywiththecorvisstinmyopia AT colmmcalinden assessmentofcornealbiomechanicstonometryandpachymetrywiththecorvisstinmyopia AT hongbingzhang assessmentofcornealbiomechanicstonometryandpachymetrywiththecorvisstinmyopia AT jieyan assessmentofcornealbiomechanicstonometryandpachymetrywiththecorvisstinmyopia AT danwang assessmentofcornealbiomechanicstonometryandpachymetrywiththecorvisstinmyopia AT weiwei assessmentofcornealbiomechanicstonometryandpachymetrywiththecorvisstinmyopia AT shengjianmi assessmentofcornealbiomechanicstonometryandpachymetrywiththecorvisstinmyopia
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Assessment of corneal biomechanics, tonometry and pachymetry with the Corvis ST in myopia

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