Evidence map›Paper›PMID 31409801›Full record

ArticleScientific reports2019

Global Assessment of Retinal Arteriolar, Venular and Capillary Microcirculations Using Fundus Photographs and Optical Coherence Tomography Angiography in Diabetic Retinopathy.

Tien-En Tan, Quang Nguyen, Jacqueline Chua, Leopold Schmetterer, Gavin Siew Wei Tan, Chee Wai Wong, Andrew Tsai, Gemmy Chui Ming Cheung, Tien Yin Wong, Daniel Shu Wei Ting

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

23 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Reduced ocular perfusion after intravitreal Aflibercept and faricimab: an exploratory study for Tie2 receptor distribution in ophthalmic capillaries.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
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  13. Diabetic retinopathy: Looking forward to 2030.Frontiers in endocrinology · 2022
    Review
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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

10 authors at 4 institutions in 2 countries.

Tien-En TanSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore.
Quang NguyenSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore.
Jacqueline ChuaSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore.ORCID http://orcid.org/0000-0002-6474-5293
Leopold SchmettererSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore.
Gavin Siew Wei TanSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore.
Chee Wai WongSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore.
Andrew TsaiSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore.
Gemmy Chui Ming CheungSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore.
Tien Yin WongSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore. wong.tien.yin@singhealth.com.sg.
Daniel Shu Wei TingSingapore Eye Research Institute, Singapore, Singapore National Eye Centre, Singapore, Singapore. daniel.ting.s.w@singhealth.com.sg.ORCID http://orcid.org/0000-0003-2264-7174
National University of Singapore · SGSingapore National Eye Center · SGSingHealth · SGNanyang Technological University · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Retinal arterioles, venules and capillaries are differentially affected in diabetes, and studying vascular alterations may provide information on pathogenesis of diabetic retinopathy (DR). We conducted a cross-sectional study on 49 diabetic patients, who underwent fundus photography and optical coherence tomographic angiography (OCT-A). Fundus photographs were analysed using semi-automated software for arteriolar and venular parameters, including central retinal arteriolar equivalent (CRAE), central retinal venular equivalent (CRVE) and fractal dimension (FD). Capillary parameters were measured using OCT-A, including capillary density index (CDI) and capillary FD of superficial (SVP) and deep (DVP) vascular plexuses. Severe DR was defined as severe non-proliferative DR and proliferative DR. We found that eyes with severe DR had narrower CRAE and sparser SVP CDI than eyes without. In logistic regression analysis, capillary parameters were more associated with severe DR than arteriolar or venular parameters. However, combining arteriolar, venular and capillary parameters provided the strongest association with severe DR. In linear regression analysis, eyes with poorer visual acuity had lower CRAE and FD of arterioles, venules, and DVP capillaries. We concluded that the retinal microvasculature is globally affected in severe DR, reflecting widespread microvascular impairment in perfusion. Arteriolar, venular and capillary parameters provide complementary information in assessment of DR.

Indexed as

Fundus OculiAngiographyDiabetic RetinopathyFemaleHumansMaleMicrovesselsMiddle AgedRetinal VesselsTomography, Optical CoherenceVisual Acuity

Identifiers

PMID31409801
PMCPMC6692394
OpenAlexW2967366674

What OpenQuestion holds

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LicenceCC BY
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.