Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth

Amany R Wissa, Sherein S Wahba, Maged M RoshdyAin Shams University and National Eye Hospital, Cairo, EgyptPurpose: To find the relationship between axial length (AL) and anterior chamber depth (ACD) measurements, using partial coherence interferometry (PCI) and A-scan ultrasonography (US).Setting: N...

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Autores principales:	Wissa AR, Wahba SS, Roshdy MM
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2012
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/838a559b7bf24e21bba5e782fd2e2b31
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spelling	oai:doaj.org-article:838a559b7bf24e21bba5e782fd2e2b312021-12-02T02:27:14ZAgreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth1177-54671177-5483https://doaj.org/article/838a559b7bf24e21bba5e782fd2e2b312012-01-01T00:00:00Zhttp://www.dovepress.com/agreement-and-relationship-between-ultrasonic-and-partial-coherence-in-a9161https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Amany R Wissa, Sherein S Wahba, Maged M RoshdyAin Shams University and National Eye Hospital, Cairo, EgyptPurpose: To find the relationship between axial length (AL) and anterior chamber depth (ACD) measurements, using partial coherence interferometry (PCI) and A-scan ultrasonography (US).Setting: National Eye Hospital, Cairo, Egypt.Method: Retrieving and comparing biometric data from the files of 163 consecutive patients seeking cataract extraction by PCI (IOLMaster) and US (Sonomed).Results: AL measured using US range from 20.93 to 33.17 mm (mean &plusmn; SD = 24.45 &plusmn; 2.73 mm). AL measured by PCI range from 20.90 to 33.27 mm (24.05 &plusmn; 2.76 mm). The range of ACD measured by US was 2.09 to 4.48 mm (3.32 &plusmn; 0.46 mm). The range of ACD measured by PCI was 2.15 to 4.29 mm (3.31 &plusmn; 0.45 mm). There is very high agreement between both methods; the intraclass correlation coefficient = 0.999 for AL, and 0.966 for ACD measurements. A linear regression model of two formulae fits the AL values (one for eyes longer than 29 mm, and the other for the shorter eyes), with no significant departure from linearity (P &gt; 0.1). One formula fits the ACD values with significant departure from linearity (P &lt; 0.05).Conclusion: Both US and PCI methods for measurements of AL and ACD are highly correlated. Therefore, the value of AL measured by one method can be predicted, with high accuracy, from the other method.Keywords: axial length, anterior chamber depth, A-scan US, partial coherence interferometryWissa ARWahba SSRoshdy MMDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2012, Iss default, Pp 193-198 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Wissa AR Wahba SS Roshdy MM Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth
description	Amany R Wissa, Sherein S Wahba, Maged M RoshdyAin Shams University and National Eye Hospital, Cairo, EgyptPurpose: To find the relationship between axial length (AL) and anterior chamber depth (ACD) measurements, using partial coherence interferometry (PCI) and A-scan ultrasonography (US).Setting: National Eye Hospital, Cairo, Egypt.Method: Retrieving and comparing biometric data from the files of 163 consecutive patients seeking cataract extraction by PCI (IOLMaster) and US (Sonomed).Results: AL measured using US range from 20.93 to 33.17 mm (mean &plusmn; SD = 24.45 &plusmn; 2.73 mm). AL measured by PCI range from 20.90 to 33.27 mm (24.05 &plusmn; 2.76 mm). The range of ACD measured by US was 2.09 to 4.48 mm (3.32 &plusmn; 0.46 mm). The range of ACD measured by PCI was 2.15 to 4.29 mm (3.31 &plusmn; 0.45 mm). There is very high agreement between both methods; the intraclass correlation coefficient = 0.999 for AL, and 0.966 for ACD measurements. A linear regression model of two formulae fits the AL values (one for eyes longer than 29 mm, and the other for the shorter eyes), with no significant departure from linearity (P &gt; 0.1). One formula fits the ACD values with significant departure from linearity (P &lt; 0.05).Conclusion: Both US and PCI methods for measurements of AL and ACD are highly correlated. Therefore, the value of AL measured by one method can be predicted, with high accuracy, from the other method.Keywords: axial length, anterior chamber depth, A-scan US, partial coherence interferometry
format	article
author	Wissa AR Wahba SS Roshdy MM
author_facet	Wissa AR Wahba SS Roshdy MM
author_sort	Wissa AR
title	Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth
title_short	Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth
title_full	Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth
title_fullStr	Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth
title_full_unstemmed	Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth
title_sort	agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth
publisher	Dove Medical Press
publishDate	2012
url	https://doaj.org/article/838a559b7bf24e21bba5e782fd2e2b31
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Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth

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