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Published in: Graefe's Archive for Clinical and Experimental Ophthalmology 7/2023

21-01-2023 | Angiography | Retinal Disorders

A normative database of wide-field swept-source optical coherence tomography angiography quantitative metrics in a large cohort of healthy adults

Authors: Mary K. Munsell, Itika Garg, Margaret Duich, Rebecca Zeng, Grace Baldwin, Hannah E. Wescott, Thomas Koch, Kira L. Wang, Nimesh A. Patel, John B. Miller

Published in: Graefe's Archive for Clinical and Experimental Ophthalmology | Issue 7/2023

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Abstract

Purpose

Data from healthy eyes is needed to interpret optical coherence tomography angiography (OCTA) findings. However, very little normative data is available for wide-field swept-source OCTA (WF SS-OCTA), particularly 12 × 12-mm and disc-centered angiograms. Therefore, we aim to report quantitative metrics in a large sample of control eyes.

Methods

In this cross-sectional observational study, 482 eyes of 375 healthy adults were imaged on the 100 kHz Zeiss PLEX® Elite 9000 using protocols centered on the fovea (3 × 3, 6 × 6, and 12 × 12-mm) and optic disc (6 × 6 and 12 × 12-mm) between December 2018 and January 2022. The ARI Network (Zeiss Portal v5.4) was used to calculate vessel density (VD) and vessel skeletonized density (VSD) in the superficial capillary plexus, deep capillary plexus, and whole retina, as well as foveal avascular zone (FAZ) parameters. Mixed-effect multiple linear regression models were used for statistical analysis.

Results

The subjects’ median age was 55 (38–63) years, and 201 (53.6%) were female. Greater age and worse best-corrected visual acuity (BCVA) were associated with significantly lower VD and VSD (p < 0.05). VD and VSD differed based on race and cataract status, but not sex, on some scan protocols (p < 0.05). FAZ circularity decreased with age, and FAZ dimensions differed based on race and ethnicity in certain scan protocols.

Conclusions

We report a large database of parafoveal and peripapillary vascular metrics in several angiogram sizes. In referencing these values, researchers must consider characteristics such as age, race, and BCVA, but will have a valuable point of comparison for OCTA measurements in pathologic settings.
Appendix
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Metadata
Title
A normative database of wide-field swept-source optical coherence tomography angiography quantitative metrics in a large cohort of healthy adults
Authors
Mary K. Munsell
Itika Garg
Margaret Duich
Rebecca Zeng
Grace Baldwin
Hannah E. Wescott
Thomas Koch
Kira L. Wang
Nimesh A. Patel
John B. Miller
Publication date
21-01-2023
Publisher
Springer Berlin Heidelberg
Published in
Graefe's Archive for Clinical and Experimental Ophthalmology / Issue 7/2023
Print ISSN: 0721-832X
Electronic ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-022-05963-5

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