Evidence map›Paper›PMID 34679118›Full record

ArticlePloS one2021

Racial and ethnic differences in foveal avascular zone in diabetic and nondiabetic eyes revealed by optical coherence tomography angiography.

Sawarin Laotaweerungsawat, Catherine Psaras, Zeeshan Haq, Xiuyun Liu, Jay M Stewart

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

18 citing papers in PubMed, 25 citations in OpenAlex.

  1. Individualized FAZ morphometry and standardized peri-FAZ vascular density: a pilot AngioVue OCTA study in diabetic retinopathy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
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  13. Assessing the Sensitivity of OCT-A Retinal Vasculature Metrics.Translational vision science & technology · 2023
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  14. A normative database of wide-field swept-source optical coherence tomography angiography quantitative metrics in a large cohort of healthy adults.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
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  15. Impact of inter-ethnic anatomical findings on current surgical outcome, established biomarkers, and future artificial intelligence algorithms.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
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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

5 authors at 2 institutions in 2 countries.

Sawarin LaotaweerungsawatDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, United States of America.
Catherine PsarasDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, United States of America.
Zeeshan HaqDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, United States of America.
Xiuyun LiuDepartment of Physiological Nursing, University of California, San Francisco, San Francisco, CA, United States of America.ORCID 0000-0001-9540-4865
Jay M StewartDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, United States of America.ORCID 0000-0003-1054-3423
San Francisco General Hospital · USUniversity of California, San Francisco · US

Funding

Rapid-Prototyping and Design CoreP30EY002162 · NEI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LAKKARAJU, APARNA · 1985 to 2024
$16.8M
Ultrasound-enhanced corneal drug deliveryR01EY024004 · NEI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI STEWART, JAY MICHAEL · 2017 to 2020
$1.6M
NEI NIH HHS P30 EY002162NEI NIH HHS R01 EY024004
6 · The paper itself

Abstract

purposeThe purpose of this study was to examine whether racial and ethnic differences in retinal microvasculature are detectable with quantitative measures derived from optical coherence tomography angiography (OCTA).

methodsOCTA scans and fundus photography were obtained in 447 eyes from 271 patients with and without diabetes between April and October 2018. Fundus photos were graded by the hospital reading center for diabetic retinopathy (DR) severity. Eight OCTA parameters relating to the foveal avascular zone (FAZ), superficial vascular perfusion, and deep vascular perfusion were analyzed for significant differences between race and ethnicity groups, self-reported by patients and organized according to National Center for Health Statistics groupings. Multiple regression was then used to adjust estimates for possible confounding by age, gender, hypertension, and last hemoglobin A1c level.

resultsSignificant differences in FAZ area were found between white and non-white patients. After adjustment, the differences between white and all non-white groups were statistically significant (p<0.05) among patients with mild to moderate DR. In those without diabetes, the Hispanic and Asian groups had significantly larger FAZ areas (p<0.005) than NH white patients. In those with mild to moderate non-proliferative diabetic retinopathy (NPDR), NH Black, Hispanic, and Asian patients also had significantly larger FAZ areas than NH white patients (p<0.005).

conclusionSignificant differences in FAZ area exist among different racial and ethnic groups. These results highlight the importance of considering and further studying race and ethnicity in OCTA analyses of the retinal microvasculature.

Indexed as

AdultAsian PeopleComputed Tomography AngiographyDiabetic RetinopathyFemaleFovea CentralisHispanic or LatinoHumansMaleMicrovesselsMiddle AgedTomography, Optical CoherenceWhite People

Identifiers

PMID34679118
PMCPMC8535464
OpenAlexW3206164918

What OpenQuestion holds

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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.