Evidence mapPaperPMID 37291258Full record

ArticleScientific reports2023

Right versus left eye asymmetry of microvasculature in diabetes revealed by optical coherence tomography angiography.

Tong Zhao, Sawarin Laotaweerungsawat, Yi Chen, Xiuyun Liu, Dongwei Liu, Jay M Stewart

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
3.6field-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

9 citing papers in PubMed, 13 citations in OpenAlex.

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    Article
  6. Review
  7. 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

6 authors at 4 institutions in 3 countries.

Tong ZhaoDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, USA.
Sawarin LaotaweerungsawatDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, USA.
Yi ChenDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, USA.
Xiuyun LiuDepartment of Physiological Nursing, University of California, San Francisco, San Francisco, CA, USA.
Dongwei LiuDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, USA.
Jay M StewartDepartment of Ophthalmology, University of California, San Francisco, San Francisco, CA, USA. jay.stewart@ucsf.edu.
University of California, San Francisco · USChina-Japan Friendship Hospital · CNSan Francisco General Hospital · USSecond Hospital of Anhui Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In this study, we explored inter-ocular asymmetry (between the two eyes of the same patient) using optical coherence tomography angiography (OCTA) in patients with diabetes mellitus (DM) at different retinopathy stages. A total of 258 patients were divided into four groups: no DM, DM without diabetic retinopathy (DR), non-proliferative DR (NPDR), and proliferative DR (PDR). Superficial and deep vessel density (SVD, DVD), superficial and deep perfusion density (SPD, DPD), foveal avascular zone (FAZ) area, perimeter and circularity were calculated, and asymmetry index (AI) was used to evaluate the asymmetry of two eyes of the same subject. AIs of SPD, SVD, FAZ area and FAZ perimeter in the PDR group were larger than all other 3 groups (all p < 0.05). The AIs of DPD, DVD, FAZ area and FAZ perimeter in males were larger than in females (p = 0.015, p = 0.023, p = 0.006 and p = 0.017). Hemoglobin A1c (HbA1c) was positively correlated with AI of FAZ perimeter (p = 0.02) and circularity (p = 0.022). In conclusion, PDR patients' eyes were significantly asymmetric in both vascular density and FAZ metrics. Male sex and HbA1c are risk factors that influenced symmetry. This study highlights that right-left asymmetry should be taken into account in DR-related studies, particularly those analyzing microvascular changes with OCTA.

Indexed as

Diabetes MellitusDiabetic RetinopathyFemaleFluorescein AngiographyFundus OculiGlycated HemoglobinHumansMaleMicrovesselsRetinal VesselsTomography, Optical CoherenceGlycated Hemoglobin

Identifiers

PMID37291258
PMCPMC10250307
OpenAlexW4379966652

What Socratic holds

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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 Socratic graph.