Inter- and intraobserver repeatability and reproducibility of choroidal thickness measurements using two different methods

Purpose To measure the inter- and intraobserver repeatability and reproducibility of choroidal thickness measurements taken by the enhanced depth imaging of spectral-domain optical coherence tomography (EDI-OCT) in randomly selected subjects using two different protocols. Methods Twenty subjects of...

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Published in:International ophthalmology 2019-05, Vol.39 (5), p.1061-1069
Main Authors: Malamas, Angelakis, Dervenis, Nikolaos, Kilintzis, Vasileios, Chranioti, Angeliki, Topouzis, Fotis
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Language:English
Subjects:
Correlation coefficient
Correlation coefficients
Measurement methods
Medicine
Medicine & Public Health
Ophthalmology
Optical Coherence Tomography
Original Paper
Reproducibility
Thickness measurement
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container_issue 5
container_start_page 1061
container_title International ophthalmology
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creator Malamas, Angelakis
Dervenis, Nikolaos
Kilintzis, Vasileios
Chranioti, Angeliki
Topouzis, Fotis
description Purpose To measure the inter- and intraobserver repeatability and reproducibility of choroidal thickness measurements taken by the enhanced depth imaging of spectral-domain optical coherence tomography (EDI-OCT) in randomly selected subjects using two different protocols. Methods Twenty subjects of the Thessaloniki Eye Study database were randomly selected. The participants underwent EDI-OCT, and the choroidal thickness was measured on EDI images using two different protocols. All images were assessed by two examiners independently in two sessions in different days. Results The interobserver intraclass correlation coefficient (ICC) for average choroidal thickness was 0.944. The average ICC for central, Cmin, and Cmax choroidal thickness was 0.899, 0.863, and 0.955, respectively. The interobserver ICC for average choroidal volume was 0.932. Intraobserver repeatability ICC for grader 1 ranged between 0.925 and 0.9720 and for grader 2 between 0.913 and 0.994. Conclusion Choroidal thickness measurements by EDI-OCT showed a high inter- and intraobserver reproducibility.
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Methods Twenty subjects of the Thessaloniki Eye Study database were randomly selected. The participants underwent EDI-OCT, and the choroidal thickness was measured on EDI images using two different protocols. All images were assessed by two examiners independently in two sessions in different days. Results The interobserver intraclass correlation coefficient (ICC) for average choroidal thickness was 0.944. The average ICC for central, Cmin, and Cmax choroidal thickness was 0.899, 0.863, and 0.955, respectively. The interobserver ICC for average choroidal volume was 0.932. Intraobserver repeatability ICC for grader 1 ranged between 0.925 and 0.9720 and for grader 2 between 0.913 and 0.994. Conclusion Choroidal thickness measurements by EDI-OCT showed a high inter- and intraobserver reproducibility.</description><identifier>ISSN: 0165-5701</identifier><identifier>EISSN: 1573-2630</identifier><identifier>DOI: 10.1007/s10792-018-0909-z</identifier><identifier>PMID: 29605881</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Correlation coefficient ; Correlation coefficients ; Measurement methods ; Medicine ; Medicine &amp; Public Health ; Ophthalmology ; Optical Coherence Tomography ; Original Paper ; Reproducibility ; Thickness measurement</subject><ispartof>International ophthalmology, 2019-05, Vol.39 (5), p.1061-1069</ispartof><rights>Springer Science+Business Media B.V., part of Springer Nature 2018</rights><rights>International Ophthalmology is a copyright of Springer, (2018). 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subjects Correlation coefficient
Correlation coefficients
Measurement methods
Medicine
Medicine & Public Health
Ophthalmology
Optical Coherence Tomography
Original Paper
Reproducibility
Thickness measurement
title Inter- and intraobserver repeatability and reproducibility of choroidal thickness measurements using two different methods
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