Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers

Chantaka Supiyaphun,1 Sasivimol Rattanasiri,2 Passara Jongkhajornpong3 1Department of Ophthalmology, Faculty of Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand; 2Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine, Ramathibodi Hospital, Mahidol Univer...

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Autores principales:	Supiyaphun C, Rattanasiri S, Jongkhajornpong P
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	pentacam axl galilei g6 agreement and intra-device repeatability Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/4d1209719bb740b6ac19743712b646e1
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spelling	oai:doaj.org-article:4d1209719bb740b6ac19743712b646e12021-12-02T10:29:26ZComparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers1177-5483https://doaj.org/article/4d1209719bb740b6ac19743712b646e12020-10-01T00:00:00Zhttps://www.dovepress.com/comparison-of-anterior-segment-parameters-and-axial-length-using-two-s-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Chantaka Supiyaphun,1 Sasivimol Rattanasiri,2 Passara Jongkhajornpong3 1Department of Ophthalmology, Faculty of Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand; 2Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand; 3Department of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, ThailandCorrespondence: Passara JongkhajornpongDepartment of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, ThailandTel +662-2012729Email passaraj@yahoo.comPurpose: To assess the repeatability of anterior segment parameters and axial length (AL) using Pentacam AXL and Galilei G6 and the agreement between both devices.Materials and Methods: Eighty-four eyes of 84 participants were measured prospectively with two devices. Outcome measurements included corneal curvatures, anterior chamber depth (ACD), AL, pupil size, and white-to-white distance (WTW). Intra-device repeatability was assessed using intraclass correlation coefficient (ICC), within-subject standard deviation (Sw), test–re-test repeatability (TRT=2.77 Sw), and coefficient of variation (CoV). Agreement between two devices was analyzed using Bland–Altman plots.Results: For each device, the Sw of corneal curvatures, ACD, and AL were lower than 0.25 D, 0.04 mm, and 0.04 mm, respectively. The ICC was higher than 0.90 in all parameters measured by Pentacam AXL, whereas three parameters measured by Galilei G6 (steep meridian at anterior and posterior cornea, and pupil size) were lower than 0.90. Comparing to Galilei G6, Pentacam AXL led to significantly lower mean anterior cornea curvatures (Km) with the mean difference (95% level of agreement; LoA) of − 0.12 D (− 0.36, 0.12, P< 0.001). For ACD, there was no significant difference between the two devices. Pentacam AXL led to significantly lower AL, pupil size, and WTW, with the mean differences (95% LoA) of − 0.04 mm (− 0.35, 0.27), − 0.18 mm (− 0.71, 0.35), and − 0.35 mm (− 0.61, − 0.10), respectively.Conclusion: We found good repeatability of corneal curvature, ACD, and AL in both devices. Most parameters obtained from Pentacam AXL were statistically significantly different from those obtained from Galilei G6, except for steep meridians and ACD.Keywords: Pentacam AXL, Galilei G6, agreement, intra-device repeatabilitySupiyaphun CRattanasiri SJongkhajornpong PDove Medical Pressarticlepentacam axlgalilei g6agreementand intra-device repeatabilityOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 3487-3494 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	pentacam axl galilei g6 agreement and intra-device repeatability Ophthalmology RE1-994
spellingShingle	pentacam axl galilei g6 agreement and intra-device repeatability Ophthalmology RE1-994 Supiyaphun C Rattanasiri S Jongkhajornpong P Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers
description	Chantaka Supiyaphun,1 Sasivimol Rattanasiri,2 Passara Jongkhajornpong3 1Department of Ophthalmology, Faculty of Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand; 2Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand; 3Department of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, ThailandCorrespondence: Passara JongkhajornpongDepartment of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, ThailandTel +662-2012729Email passaraj@yahoo.comPurpose: To assess the repeatability of anterior segment parameters and axial length (AL) using Pentacam AXL and Galilei G6 and the agreement between both devices.Materials and Methods: Eighty-four eyes of 84 participants were measured prospectively with two devices. Outcome measurements included corneal curvatures, anterior chamber depth (ACD), AL, pupil size, and white-to-white distance (WTW). Intra-device repeatability was assessed using intraclass correlation coefficient (ICC), within-subject standard deviation (Sw), test–re-test repeatability (TRT=2.77 Sw), and coefficient of variation (CoV). Agreement between two devices was analyzed using Bland–Altman plots.Results: For each device, the Sw of corneal curvatures, ACD, and AL were lower than 0.25 D, 0.04 mm, and 0.04 mm, respectively. The ICC was higher than 0.90 in all parameters measured by Pentacam AXL, whereas three parameters measured by Galilei G6 (steep meridian at anterior and posterior cornea, and pupil size) were lower than 0.90. Comparing to Galilei G6, Pentacam AXL led to significantly lower mean anterior cornea curvatures (Km) with the mean difference (95% level of agreement; LoA) of − 0.12 D (− 0.36, 0.12, P< 0.001). For ACD, there was no significant difference between the two devices. Pentacam AXL led to significantly lower AL, pupil size, and WTW, with the mean differences (95% LoA) of − 0.04 mm (− 0.35, 0.27), − 0.18 mm (− 0.71, 0.35), and − 0.35 mm (− 0.61, − 0.10), respectively.Conclusion: We found good repeatability of corneal curvature, ACD, and AL in both devices. Most parameters obtained from Pentacam AXL were statistically significantly different from those obtained from Galilei G6, except for steep meridians and ACD.Keywords: Pentacam AXL, Galilei G6, agreement, intra-device repeatability
format	article
author	Supiyaphun C Rattanasiri S Jongkhajornpong P
author_facet	Supiyaphun C Rattanasiri S Jongkhajornpong P
author_sort	Supiyaphun C
title	Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers
title_short	Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers
title_full	Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers
title_fullStr	Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers
title_full_unstemmed	Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers
title_sort	comparison of anterior segment parameters and axial length using two scheimpflug devices with integrated optical biometers
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/4d1209719bb740b6ac19743712b646e1
work_keys_str_mv	AT supiyaphunc comparisonofanteriorsegmentparametersandaxiallengthusingtwoscheimpflugdeviceswithintegratedopticalbiometers AT rattanasiris comparisonofanteriorsegmentparametersandaxiallengthusingtwoscheimpflugdeviceswithintegratedopticalbiometers AT jongkhajornpongp comparisonofanteriorsegmentparametersandaxiallengthusingtwoscheimpflugdeviceswithintegratedopticalbiometers
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Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers

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