Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound

Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound

J Jorge,1 JL Rosado,2 JA Díaz-Rey,1 JM González-Méijome11Clinical and Experimental Optometry Research Laboratory, Center of Physics (Optometry), School of Sciences, University of Minho, Braga, 2Opticlinic, Lisboa, PortugalBackground: The purpose of this s...

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Autores principales: Jorge J, Rosado JL, Díaz-Rey JA, González-Méijome JM
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2013
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Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/09c6fffc75e249b3bd6270977a50db38
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spelling oai:doaj.org-article:09c6fffc75e249b3bd6270977a50db382021-12-02T01:51:02ZCentral corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound1177-54671177-5483https://doaj.org/article/09c6fffc75e249b3bd6270977a50db382013-02-01T00:00:00Zhttp://www.dovepress.com/central-corneal-thickness-and-anterior-chamber-depth-measurement-by-si-a12300https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483J Jorge,1 JL Rosado,2 JA Díaz-Rey,1 JM González-Méijome11Clinical and Experimental Optometry Research Laboratory, Center of Physics (Optometry), School of Sciences, University of Minho, Braga, 2Opticlinic, Lisboa, PortugalBackground: The purpose of this study was to compare the accuracy of the new Sirius® Scheimpflug anterior segment examination device for measurement of central corneal thickness (CCT) and anterior chamber depth (ACD) with that of CCT measurements obtained by ultrasound pachymetry and ACD measurements obtained by ultrasound biometry, respectively.Methods: CCT and ACD was measured in 50 right eyes from 50 healthy subjects using a Sirius Scheimpflug camera, SP100 ultrasound pachymetry, and US800 ultrasound biometry.Results: CCT measured with the Sirius was 546 ± 39 µm and 541 ± 35 µm with SP100 ultrasound pachymetry (P = 0.003). The difference was statistically significant (mean difference 4.68 ± 10.5 µm; limits of agreement −15.8 to 25.20 µm). ACD measured with the Sirius was 2.96 ± 0.3 mm compared with 3.36 ± 0.29 mm using US800 ultrasound biometry (P < 0.001). The difference was statistically significant (mean difference −0.40 ± 0.16 mm; limits of agreement −0.72 to 0.07 mm). When the ACD values obtained using ultrasound biometry were corrected according to the values for CCT measured by ultrasound, the agreement increased significantly between both technologies for ACD measurements (mean difference 0.15 ± 0.16 mm; limits of agreement −0.16 to 0.45 mm).Conclusion: CCT and ACD measured by Sirius and ultrasound methods showing good agreement between repeated measurements obtained in the same subjects (repeatability) with either instrument. However, CCT and ACD values, even after correcting ultrasound ACD by subtracting the CCT value obtained with either technology should not be used interchangeably.Keywords: Scheimpflug corneal tomography, ultrasound biometry, ultrasound pachymetry, limits of agreementJorge JRosado JLDíaz-Rey JAGonzález-Méijome JMDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2013, Iss default, Pp 417-422 (2013)
institution DOAJ
collection DOAJ
language EN
topic Ophthalmology
RE1-994
spellingShingle Ophthalmology
RE1-994
Jorge J
Rosado JL
Díaz-Rey JA
González-Méijome JM
Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound
description J Jorge,1 JL Rosado,2 JA Díaz-Rey,1 JM González-Méijome11Clinical and Experimental Optometry Research Laboratory, Center of Physics (Optometry), School of Sciences, University of Minho, Braga, 2Opticlinic, Lisboa, PortugalBackground: The purpose of this study was to compare the accuracy of the new Sirius® Scheimpflug anterior segment examination device for measurement of central corneal thickness (CCT) and anterior chamber depth (ACD) with that of CCT measurements obtained by ultrasound pachymetry and ACD measurements obtained by ultrasound biometry, respectively.Methods: CCT and ACD was measured in 50 right eyes from 50 healthy subjects using a Sirius Scheimpflug camera, SP100 ultrasound pachymetry, and US800 ultrasound biometry.Results: CCT measured with the Sirius was 546 ± 39 µm and 541 ± 35 µm with SP100 ultrasound pachymetry (P = 0.003). The difference was statistically significant (mean difference 4.68 ± 10.5 µm; limits of agreement −15.8 to 25.20 µm). ACD measured with the Sirius was 2.96 ± 0.3 mm compared with 3.36 ± 0.29 mm using US800 ultrasound biometry (P < 0.001). The difference was statistically significant (mean difference −0.40 ± 0.16 mm; limits of agreement −0.72 to 0.07 mm). When the ACD values obtained using ultrasound biometry were corrected according to the values for CCT measured by ultrasound, the agreement increased significantly between both technologies for ACD measurements (mean difference 0.15 ± 0.16 mm; limits of agreement −0.16 to 0.45 mm).Conclusion: CCT and ACD measured by Sirius and ultrasound methods showing good agreement between repeated measurements obtained in the same subjects (repeatability) with either instrument. However, CCT and ACD values, even after correcting ultrasound ACD by subtracting the CCT value obtained with either technology should not be used interchangeably.Keywords: Scheimpflug corneal tomography, ultrasound biometry, ultrasound pachymetry, limits of agreement
format article
author Jorge J
Rosado JL
Díaz-Rey JA
González-Méijome JM
author_facet Jorge J
Rosado JL
Díaz-Rey JA
González-Méijome JM
author_sort Jorge J
title Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound
title_short Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound
title_full Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound
title_fullStr Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound
title_full_unstemmed Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound
title_sort central corneal thickness and anterior chamber depth measurement by sirius® scheimpflug tomography and ultrasound
publisher Dove Medical Press
publishDate 2013
url https://doaj.org/article/09c6fffc75e249b3bd6270977a50db38
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