Evidence map›Paper›PMID 33091032›Full record

ArticlePloS one2020

Superficial capillary perfusion on optical coherence tomography angiography differentiates moderate and severe nonproliferative diabetic retinopathy.

Janice X Ong, Changyow C Kwan, Maria V Cicinelli, Amani A Fawzi

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
2.6field-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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

  1. Pooled it
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  14. Optical coherence tomography angiography in diabetic retinopathy.Progress in retinal and eye research · 2023
    Review
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  18. Pre-Ophthalmoscopic Quantitative Biomarkers in Diabetes Mellitus.Translational vision science & technology · 2023
    Article
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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

4 authors at 1 institution in 1 country.

Janice X OngDepartment of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America.
Changyow C KwanDepartment of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America.
Maria V CicinelliDepartment of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America.
Amani A FawziDepartment of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America.ORCID 0000-0002-9568-3558
Northwestern University · US

Funding

Exploring the angiogenesis-to-fibrosis transition in ischemic retinopathies RenewalR01EY030121 · NEI · NORTHWESTERN UNIVERSITY AT CHICAGO · PI Amani A Fawzi · 2020 to 2026
$2.9M
Monitoring the hemodynamic response to therapy in diabetic retinopathyR01EY031815 · NEI · NORTHWESTERN UNIVERSITY AT CHICAGO · PI FAWZI, AMANI A · 2020 to 2023
$1.9M
NEI NIH HHS R01 EY030121NEI NIH HHS R01 EY031815
6 · The paper itself

Abstract

purposeTo identify objective optical coherence tomography angiography (OCTA) parameters that characterize the spectrum of non-proliferative diabetic retinopathy (NPDR), especially those that distinguish moderate from severe NPDR.

methodsSixty eyes of 60 patients with treatment-naïve NPDR (mild: 21, moderate: 21, severe: 18), 23 eyes with diabetes and no retinopathy, and 24 healthy control eyes were enrolled. OCTA slabs were segmented into superficial (SCP), middle (MCP), and deep capillary plexus (DCP) and thresholded by a new method based on DCP skeletonized vessel length. The foveal avascular zone (FAZ) area, parafoveal vessel density (VD), and adjusted flow index (AFI) from all three capillary layers and the vessel length density (VLD) of the SCP were compared between each severity group, after adjusting for age and image quality.

resultsAll vessel density markers decreased with increasing severity of NPDR. SCP VD and VLD demonstrated significant differences between eyes with diabetes with no retinopathy and mild NPDR (p = 0.001 and p < 0.001, respectively), as well as between moderate vs. severe NPDR (p = 0.004 and p = 0.009, respectively). MCP VD significantly decreased between moderate and severe NPDR (p = 0.01). AFI significantly increased in the SCP and showed a decreasing trend in the MCP and DCP with increasing NPDR severity.

conclusionsChanges in the SCP VD, SCP VLD, and MCP VD can distinguish severe NPDR from lower-risk stages. SCP changes may be more reliable due to their lower susceptibility to noise and projection artifacts. Thresholding OCTA images based on DCP skeletonized vessel length showed less variability in moderate and severe NPDR. Additional studies are warranted to validate this new thresholding method.

Indexed as

AdultAgedArea Under CurveCross-Sectional StudiesDiabetes Mellitus, Type 1Diabetes Mellitus, Type 2Diabetic RetinopathyEyeFemaleFluorescein AngiographyHumansImage Processing, Computer-AssistedMaleMiddle AgedRetinal VesselsROC Curve

Identifiers

PMID33091032
PMCPMC7580912
OpenAlexW3093939296

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.