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A new optical coherence tomography method for subfoveal choroidal thickness measurement: A single-center observational study

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Author(s)
Kang, Kyung TaeJang, Ji HyeKim, Yu Cheol
Keimyung Author(s)
Kang, Kyung TaeJang, Ji HyeKim, Yu Cheol
Department
Dept. of Ophthalmology (안과학)
Journal Title
Medicine (Baltimore)
Issued Date
2021
Volume
100
Issue
24
Keyword
choroidfoveaoptical coherence tomographyretina
Abstract
Several macular pathologies are associated with choroidal vascular supply and thus require choroidal thickness evaluation. However, there is no standard subfoveal choroidal thickness (SFCT) measurement method. This study investigated a new method of SFCT measurement, using optical coherence tomography.

This is a single-center observational study. Eighty-two senior medical students participated as observers and independently measured the SFCT on 5 standard optical coherence tomography images of healthy adults in a tertiary care setting. They used 3 different methods: the observer's own method, the conventional method, perpendicular to the retinal pigment epithelium, and the new method, along a virtual line connecting the umbo with the most elevated point of the ellipsoid. Additionally, the SFCT angle—the angle between the measurement line and the vertical line of the image—was measured and compared between methods. The intraclass correlation coefficient was used to determine interpersonal variability.

The intraclass correlation coefficients for SFCT, measured using methods 1, 2, and 3, were 0.853, 0.880, and 0.896, respectively (P < .001 for all). Method 3 was the highest. The intraclass correlation coefficients of the SFCT angles were 0.647, 0.842, and 0.307, respectively (P < .001 for all).

The new method showed the lowest interpersonal variability and could therefore be a reliable standard for SFCT measurement, even in foveae with a steep slope on optical coherence tomography.
Keimyung Author(s)(Kor)
강경태
장지혜
김유철
Publisher
School of Medicine (의과대학)
Citation
Kang, Kyung Tae et al. (2021). A new optical coherence tomography method for subfoveal choroidal thickness measurement: A single-center observational study. Medicine (Baltimore), 100(24), e26355. doi: 10.1097/MD.0000000000026355
Type
Article
ISSN
1536-5964
Source
https://journals.lww.com/md-journal/Fulltext/2021/06180/A_new_optical_coherence_tomography_method_for.47.aspx
DOI
10.1097/MD.0000000000026355
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/43823
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Ophthalmology (안과학)
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