Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner

Haya M Al-Farhan, Reem N AlMutairiKing Saud University, College of Applied Medical Sciences, Department of Optometry and Vision Sciences, Riyadh, Kingdom of Saudi ArabiaPurpose: To compare the precision of anterior chamber angle (ACA) and anterior chamber depth (ACD) measurements taken with ultrasou...

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Autores principales:	Al-Farhan HM, AlMutairi RN
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/462282163d544a538c7f15dcd4eb647f
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spelling	oai:doaj.org-article:462282163d544a538c7f15dcd4eb647f2021-12-02T00:44:02ZAnterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner1177-54671177-5483https://doaj.org/article/462282163d544a538c7f15dcd4eb647f2013-01-01T00:00:00Zhttp://www.dovepress.com/anterior-segment-biometry-using-ultrasound-biomicroscopy-and-the-artem-a11972https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Haya M Al-Farhan, Reem N AlMutairiKing Saud University, College of Applied Medical Sciences, Department of Optometry and Vision Sciences, Riyadh, Kingdom of Saudi ArabiaPurpose: To compare the precision of anterior chamber angle (ACA) and anterior chamber depth (ACD) measurements taken with ultrasound biomicroscopy (UBM) and the Artemis-2 Very High Frequency Ultrasound Scanner (VHFUS) in normal subjects.Design: Prospective study.Methods: We randomly selected one eye from each of 59 normal subjects in this study. Two subjects dropped out of the study; the associated data were excluded from analysis. ACA and ACD measurements were obtained using the VHFUS and the UBM. The results were compared statistically using repeated-measures analysis of variance for the intraobserver repeatability, unpaired t-test, and limits of agreement.Results: The average ACA values for the UBM and the VHFUS (&plusmn;standard deviation) were 41.83&deg; &plusmn; 5.03&deg; and 33.36&deg; &plusmn; 6.03&deg;, respectively. The average ACD values were 2.96 &plusmn; 0.34 mm and 2.87 &plusmn; 0.31 mm. The intraobserver repeatability analysis of variance P-values for ACA and ACD measurements using UBM were 0.10 and 0.68, respectively; for the Artemis-2 VHFUS, the respective values were 0.68 and 0.09. The difference in ACA measurements was statistically significant (t = 8.41; P &lt; 0.0001), while the difference in ACD values was not (t = 1.51; P &lt; 0.13). The mean ACA difference was 8.50&deg; &plusmn; 2.50&deg;, and the limits of agreement were +13.30&deg; to &minus;3.60&deg;. The mean ACD difference was 0.09 &plusmn; 0.27 mm, and the limits of agreement ranged from 0.61 mm to &minus;0.43 mm. The mean difference percentage of ACD was 3.1% for both instruments.Conclusion: In case of the ACD, both instruments can be used interchangeably; however, with the ACA instruments, they cannot be used interchangeably.Keywords: anterior chamber angle, anterior chamber depth, Artemis-2 VHF scanner, ultrasound biomicroscope, normal eyesAl-Farhan HMAlMutairi RNDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2013, Iss default, Pp 141-147 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Al-Farhan HM AlMutairi RN Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner
description	Haya M Al-Farhan, Reem N AlMutairiKing Saud University, College of Applied Medical Sciences, Department of Optometry and Vision Sciences, Riyadh, Kingdom of Saudi ArabiaPurpose: To compare the precision of anterior chamber angle (ACA) and anterior chamber depth (ACD) measurements taken with ultrasound biomicroscopy (UBM) and the Artemis-2 Very High Frequency Ultrasound Scanner (VHFUS) in normal subjects.Design: Prospective study.Methods: We randomly selected one eye from each of 59 normal subjects in this study. Two subjects dropped out of the study; the associated data were excluded from analysis. ACA and ACD measurements were obtained using the VHFUS and the UBM. The results were compared statistically using repeated-measures analysis of variance for the intraobserver repeatability, unpaired t-test, and limits of agreement.Results: The average ACA values for the UBM and the VHFUS (&plusmn;standard deviation) were 41.83&deg; &plusmn; 5.03&deg; and 33.36&deg; &plusmn; 6.03&deg;, respectively. The average ACD values were 2.96 &plusmn; 0.34 mm and 2.87 &plusmn; 0.31 mm. The intraobserver repeatability analysis of variance P-values for ACA and ACD measurements using UBM were 0.10 and 0.68, respectively; for the Artemis-2 VHFUS, the respective values were 0.68 and 0.09. The difference in ACA measurements was statistically significant (t = 8.41; P &lt; 0.0001), while the difference in ACD values was not (t = 1.51; P &lt; 0.13). The mean ACA difference was 8.50&deg; &plusmn; 2.50&deg;, and the limits of agreement were +13.30&deg; to &minus;3.60&deg;. The mean ACD difference was 0.09 &plusmn; 0.27 mm, and the limits of agreement ranged from 0.61 mm to &minus;0.43 mm. The mean difference percentage of ACD was 3.1% for both instruments.Conclusion: In case of the ACD, both instruments can be used interchangeably; however, with the ACA instruments, they cannot be used interchangeably.Keywords: anterior chamber angle, anterior chamber depth, Artemis-2 VHF scanner, ultrasound biomicroscope, normal eyes
format	article
author	Al-Farhan HM AlMutairi RN
author_facet	Al-Farhan HM AlMutairi RN
author_sort	Al-Farhan HM
title	Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner
title_short	Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner
title_full	Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner
title_fullStr	Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner
title_full_unstemmed	Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner
title_sort	anterior segment biometry using ultrasound biomicroscopy and the artemis-2 very high frequency ultrasound scanner
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/462282163d544a538c7f15dcd4eb647f
work_keys_str_mv	AT alfarhanhm anteriorsegmentbiometryusingultrasoundbiomicroscopyandtheartemis2veryhighfrequencyultrasoundscanner AT almutairirn anteriorsegmentbiometryusingultrasoundbiomicroscopyandtheartemis2veryhighfrequencyultrasoundscanner
_version_	1718403491274162176

Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner

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