Macular Microvascular Parameters in the Ganglion Cell-inner Plexiform Layer Derived by Optical Coherence Tomography Angiography: Vascular Structure-central Visual Function Analysis

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2020 Oct 1

PMID 33002090

Citations 2

Authors

Cody Hansen

Karine D Bojikian

Zhongdi Chu

Xiao Zhou

Qinqin Zhang

Raghu C Mudumbai

Murray A Johnstone

Ruikang K Wang

Philip P Chen

Affiliations

Soon will be listed here.

Abstract

Purpose: To investigate the relationships between global and sectoral macular vascular microcirculation parameters in the ganglion cell-inner plexiform layer (GCIPL) assessed by optical coherence tomography angiography (OCTA), and global and sectoral visual field (VF) central mean sensitivity (CMS) assessed by standard automated perimetry.

Methods: Fifty-four eyes with open angle glaucoma were scanned using a swept-source OCTA (Plex Elite 9000, Zeiss, Dublin, CA) and macular vascular microcirculation was measured by calculating the overall flux and vessel area density (VAD) over the entire 6mm x 6mm area, excluding large retinal vessels. Central 10-degree VF CMS was calculated based on 24-2 VF. Pearson correlation was used to investigate the correlation between global and sectoral OCTA parameters and global and sectoral VF CMS.

Results: Both global GCIPL flux and VAD were significantly correlated with VF CMS (p<0.001). For the sectoral analysis, sectoral VAD was significantly correlated with sectoral VF CMS in all comparisons except for the inferonasal VF CMS with supero-temporal (ST) GCIPL VAD (p = 0.097). Although highest correlation was observed for both ST VF CMS with inferior GCIPL VAD and infero-temporal VF CMS with superior GCIPL VAD (r = 0.683, p<0.001), there was no significant difference in correlation when compared to the global VAD and other sectors' correlation coefficients (p≥ 0.091), except for the ST GCIPL VAD (p = 0.001).

Conclusions: Global and sectoral macular vascular microcirculation in the GCIPL, as determined by OCTA, was significantly correlated with global and sectoral VF CMS in glaucomatous patients. OCTA can aid in the understanding of the structure-function relationships of the macular region.

Citing Articles

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OCTAVA: An open-source toolbox for quantitative analysis of optical coherence tomography angiography images.

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