Evidence map›Paper›PMID 31917454›Full record

ArticleInvestigative ophthalmology & visual science2019

Ocular Determinants of Peripapillary Vessel Density in Healthy African Americans: The African American Eye Disease Study.

Andrew J Nelson, Ryuna Chang, Vivian LeTran, Brian Vu, Bruce Burkemper, Zhongdi Chu, Ali Fard, Amir Kashani, Benjamin Xu, Ruikang Wang and 3 more

Open access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
3.9field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 20 citations in OpenAlex.

  1. Vascular density normative data of radial peripapillary capillary plexus in healthy Caucasian subjects.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
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  6. Observational
  7. Ocular blood flow as it relates to race and disease on glaucoma.Advances in ophthalmology and optometry · 2021
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  12. Evaluation of the optic nerve head vessel density in the patients with asymmetric pseudoexfoliative glaucoma: an OCT angiography study.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2020
    Article
  13. Observational
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 5 institutions in 1 country.

Andrew J NelsonUSC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine of the University of Southern California, California, United States.
Ryuna ChangUSC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine of the University of Southern California, California, United States.
Vivian LeTranUSC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine of the University of Southern California, California, United States.
Brian VuUniversity of Colorado School of Medicine, Aurora, Colorado, United States.
Bruce BurkemperDepartments of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California, United States.
Zhongdi ChuDepartment of Bioengineering, University of Washington, Washington, United States.
Ali FardCarl Zeiss Meditec, Dublin, California, United States.
Amir KashaniUSC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine of the University of Southern California, California, United States.
Benjamin XuUSC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine of the University of Southern California, California, United States.
Ruikang WangDepartment of Bioengineering, University of Washington, Washington, United States.
Rohit VarmaSouthern California Eye Institute, CHA Hollywood Presbyterian Medical Center, Los Angeles, California, United States.
Grace M RichterUSC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine of the University of Southern California, California, United States.
African American Eye Disease Study Group
Southern California Eye Institute · USUniversity of Southern California · USUniversity of Washington · USCarl Zeiss (United States) · USUniversity of Colorado Denver · US

Funding

African American Eye Disease StudyU10EY023575 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI VARMA, ROHIT · 2013 to 2017
$12.1M
Defining the Relationships of Retinal Microcirculation with Glaucoma, Systemic Disease, and Ocular Anatomic Factors in African AmericansK23EY027855 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI RICHTER, GRACE MARIE · 2017 to 2021
$984k
Functional Imaging in Hypoxic-Ischemic Retinal DiseaseK08EY027006 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI KASHANI, AMIR H · 2016 to 2020
$978k
NEI NIH HHS K08 EY027006NEI NIH HHS K23 EY027855NEI NIH HHS U10 EY023575
6 · The paper itself

Abstract

Purpose: The African American (AA) population has unique ocular anatomic characteristics and a disproportionately high incidence of glaucoma, which is associated with lower peripapillary vessel density (VD). This study aimed to identify ocular determinants of peripapillary VD in healthy AAs. Methods: This was a cross-sectional, population-based study of 1029 AAs, ages 40 and older. Participants underwent examination to obtain axial length (AL), IOP, central corneal thickness (CCT), mean retinal nerve fiber layer (RNFL) thickness, visual field mean deviation (MD), and 6 × 6-mm optical coherence tomography angiography scans of the optic nerve. Participants with glaucoma, vision-threatening diabetic retinopathy, or other relevant ocular disease were excluded. Prototype software was used to quantify VD. A multivariable regression model, controlling for age and signal strength, identified the ocular variables that predicted peripapillary VD. The contribution of each variable was assessed with the magnitude of standardized regression coefficients (SRC). Results: Based on univariate regressions, AL, RNFL thickness, and MD had significant associations with peripapillary VD (all P < 0.001). In the final multivariate model, lower mean RNFL thickness (β = 0.0022, P < 0.001, SRC = 0.542) and longer AL (β = -0.0055, P < 0.001, SRC = -0.118) were associated with lower peripapillary VD, controlling for age and signal strength, with model R2 of 0.69. Conclusions: Thinner RNFL and longer AL were the most influential ocular determinants of lower peripapillary perfusion in healthy AA eyes. Additional research is needed to clarify whether longer AL increases risk of glaucoma by affecting capillary perfusion.

Indexed as

Black or African AmericanAdultAxial Length, EyeCross-Sectional StudiesFemaleFluorescein AngiographyHealthy VolunteersHumansMaleMiddle AgedNerve FibersOptic DiskRetinal Ganglion CellsRetinal VesselsTomography, Optical Coherence

Identifiers

PMID31917454
PMCPMC6681862
OpenAlexW2966823689

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.