Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography

Nida Wongchaisuwat,1,2 Ankana Metheetrairat,1 Pratuangsri Chonpimai,1 Waree Nujoi,1 Pinnita Prabhasawat1 1Department of Ophthalmology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand; 2Department of Ophthalmology, Golden Jubilee Medical Center, Mahidol University, Nakho...

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Autores principales:	Wongchaisuwat N, Metheetrairut A, Chonpimai P, Nujoi W, Prabhasawat P
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	central corneal thickness ultrasonography optical coherence tomography Scheimpflug camera tomography Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/9ab6e32c31784c08b206b28dccfaacaf
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spelling	oai:doaj.org-article:9ab6e32c31784c08b206b28dccfaacaf2021-12-02T11:31:26ZComparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography1177-5483https://doaj.org/article/9ab6e32c31784c08b206b28dccfaacaf2018-09-01T00:00:00Zhttps://www.dovepress.com/comparison-of-central-corneal-thickness-measurements-in-corneal-edema--peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Nida Wongchaisuwat,1,2 Ankana Metheetrairat,1 Pratuangsri Chonpimai,1 Waree Nujoi,1 Pinnita Prabhasawat1 1Department of Ophthalmology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand; 2Department of Ophthalmology, Golden Jubilee Medical Center, Mahidol University, Nakhon Pathom, Thailand Purpose: To compare the central corneal thickness (CCT) measurements in subjects with corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography (OCT), Cirrus OCT, and Pentacam Scheimpflug camera tomography.Methods: This prospective cross-sectional study included 46 eyes of 33 patients with corneal edema and a CCT exceeding 550 μm evaluated by ultrasound pachymetry, Visante OCT, Cirrus OCT, and Pentacam. Two observers measured each eye twice. Intraobserver and interobserver reproducibility were determined and agreement among the devices calculated.Results: CCT was measured in 40 eyes of 29 patients. Regardless of the CCT, the measurements obtained using Visante OCT, Cirrus CCT, and ultrasound pachymetry were well correlated. Interobserver and intraobserver reproducibility were high among the three devices. Pentacam overestimated the results compared with the other devices, and ultrasound pachymetry was unmeasurable in six (13%) eyes with very thick and opaque corneas. In eyes with mild corneal edema (CCT 551–650 μm), measurements from the four devices were comparable.Conclusion: All devices reliably measured the CCT <650 μm. In eyes with edema exceeding 650 μm, CCT measurements from the Visante OCT, Cirrus OCT, and ultrasound pachymetry devices showed good reproducibility and were well correlated, while the Pentacam overestimated the values compared to the other devices. Pentacam and ultrasound pachymetry should not be used in eyes with extreme corneal edema and opacity.Keywords: central corneal thickness, ultrasonography, optical coherence tomography, Scheimpflug camera tomographyWongchaisuwat NMetheetrairut AChonpimai PNujoi WPrabhasawat PDove Medical Pressarticlecentral corneal thicknessultrasonographyoptical coherence tomographyScheimpflug camera tomographyOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 12, Pp 1865-1873 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	central corneal thickness ultrasonography optical coherence tomography Scheimpflug camera tomography Ophthalmology RE1-994
spellingShingle	central corneal thickness ultrasonography optical coherence tomography Scheimpflug camera tomography Ophthalmology RE1-994 Wongchaisuwat N Metheetrairut A Chonpimai P Nujoi W Prabhasawat P Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography
description	Nida Wongchaisuwat,1,2 Ankana Metheetrairat,1 Pratuangsri Chonpimai,1 Waree Nujoi,1 Pinnita Prabhasawat1 1Department of Ophthalmology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand; 2Department of Ophthalmology, Golden Jubilee Medical Center, Mahidol University, Nakhon Pathom, Thailand Purpose: To compare the central corneal thickness (CCT) measurements in subjects with corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography (OCT), Cirrus OCT, and Pentacam Scheimpflug camera tomography.Methods: This prospective cross-sectional study included 46 eyes of 33 patients with corneal edema and a CCT exceeding 550 μm evaluated by ultrasound pachymetry, Visante OCT, Cirrus OCT, and Pentacam. Two observers measured each eye twice. Intraobserver and interobserver reproducibility were determined and agreement among the devices calculated.Results: CCT was measured in 40 eyes of 29 patients. Regardless of the CCT, the measurements obtained using Visante OCT, Cirrus CCT, and ultrasound pachymetry were well correlated. Interobserver and intraobserver reproducibility were high among the three devices. Pentacam overestimated the results compared with the other devices, and ultrasound pachymetry was unmeasurable in six (13%) eyes with very thick and opaque corneas. In eyes with mild corneal edema (CCT 551–650 μm), measurements from the four devices were comparable.Conclusion: All devices reliably measured the CCT <650 μm. In eyes with edema exceeding 650 μm, CCT measurements from the Visante OCT, Cirrus OCT, and ultrasound pachymetry devices showed good reproducibility and were well correlated, while the Pentacam overestimated the values compared to the other devices. Pentacam and ultrasound pachymetry should not be used in eyes with extreme corneal edema and opacity.Keywords: central corneal thickness, ultrasonography, optical coherence tomography, Scheimpflug camera tomography
format	article
author	Wongchaisuwat N Metheetrairut A Chonpimai P Nujoi W Prabhasawat P
author_facet	Wongchaisuwat N Metheetrairut A Chonpimai P Nujoi W Prabhasawat P
author_sort	Wongchaisuwat N
title	Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography
title_short	Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography
title_full	Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography
title_fullStr	Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography
title_full_unstemmed	Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography
title_sort	comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, visante anterior-segment optical coherence tomography, cirrus optical coherence tomography, and pentacam scheimpflug camera tomography
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/9ab6e32c31784c08b206b28dccfaacaf
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Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography

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