alexa Agreement in Quantitative Anterior Chamber Angle Metrics between RTVue and Cirrus Spectral Domain Optical Coherence Tomography
ISSN: 2155-9570

Journal of Clinical & Experimental Ophthalmology
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Research Article

Agreement in Quantitative Anterior Chamber Angle Metrics between RTVue and Cirrus Spectral Domain Optical Coherence Tomography

Anna Ι Dastiridou1, Kenneth M Marion1, Moritz Niemeyer1, Brian A Francis1,2, Srinivas R Sadda1,2 and Vikas Chopra1,2*
1Doheny Image Reading Center, Doheny Eye Institute, Los Angeles, CA, USA
2Department of Ophthalmology, David Geffen School of Medicine, University of California, Los Angeles, USA
Corresponding Author : Vikas Chopra
M.D, UCLA Doheny Eye Centers
625 S Fair Oaks Avenue, Suite 215
Pasadena, CA 91105, USA
Tel: 626-817-4701
E-mail: [email protected]
Received: March 23, 2015; Accepted: May 28, 2015; Published: June 01, 2015
Citation: Dastiridou AI, Marion KM, Niemeyer M, Francis BA, Sadda SR et al. (2015) Agreement in Quantitative Anterior Chamber Angle Metrics between RTVue and Cirrus Spectral Domain Optical Coherence Tomography. J Clin Exp Ophthalmol 6:435. doi:10.4172/2155-9570.1000435
Copyright: © 2014 Dastiridou AI et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Purpose: To investigate the agreement between two spectral domain optical coherence tomography (SD-OCT) instruments in Schwalbe’s line (SL) based anterior chamber angle parameters and to evaluate their repeatability and reproducibility.
Methods: The inferior irido-corneal angle of 114 eyes from 59 participants (29 glaucoma and 30 normal) were scanned twice with the Optovue SD-OCT and Cirrus SD-OCT under controlled low luminance conditions. SL angle opening distance (SL-AOD) and SL trabecular-iris-space area (SL-TISA) were graded by masked certified graders at the Doheny Image Reading Center.
Results: The mean SL-AOD/SL-TISA was 623±271μm/ 0.221 ± 0.106 mm2 for the Cirrus and 611 ± 267 μm/ 0.215 ± 0.112 mm2 for the RTVue. Excellent repeatability (intraclass correlation coefficient ICC>0.934), excellent intragrader reproducibility (ICC>0.957) and very good intergrader reproducibility (ICC>0.877) were observed with both instruments in SL-AOD and SL-TISA. The agreement between Cirrus and RTVue was excellent (ICC 0.943 for SL-AOD and 0.900 for SL-TISA).
Conclusion: Both instruments provide consistent and reproducible measurement of SL-AOD and SL-TISA. The excellent agreement between them allows for direct comparisons of angle measurements acquired with different SDOCTs and can lead in the introduction of criteria that could be valid across different platforms

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