Inter- and Intraobserver Repeatability and Reproducibility of Choroidal Thickness Measurements Using Two Different Methods

Overview

Journal Int Ophthalmol

Specialty Ophthalmology

Date 2018 Apr 2

PMID 29605881

Citations 3

Authors

Angelakis Malamas

Nikolaos Dervenis

Vasileios Kilintzis

Angeliki Chranioti

Fotis Topouzis

Affiliations

Soon will be listed here.

Abstract

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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