Evidence map›Paper›PMID 25670487›Full record

ArticleInvestigative ophthalmology & visual science2015

Measurement of retinal blood flow in normal Chinese-American subjects by Doppler Fourier-domain optical coherence tomography.

Sowmya Srinivas, Ou Tan, Shuang Wu, Muneeswar Gupta Nittala, David Huang, Rohit Varma, SriniVas R Sadda

Open access · greenAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2015. 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
4.0field-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

18 citing papers in PubMed, 26 citations in OpenAlex.

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  12. Evaluating ocular blood flow.Indian journal of ophthalmology · 2017
    Review
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  17. Review
  18. Role of ocular blood flow in normal tension glaucoma.Advances in ophthalmology practice and research
    Review
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

7 authors at 4 institutions in 1 country.

Sowmya SrinivasDoppler OCT Reading Center, Doheny Eye Institute, Los Angeles, California, United States.
Ou TanCasey Eye Institute, Oregon Health & Science University, Portland, Oregon, United States.
Shuang WuDepartment of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States.
Muneeswar Gupta NittalaDoppler OCT Reading Center, Doheny Eye Institute, Los Angeles, California, United States.
David HuangCasey Eye Institute, Oregon Health & Science University, Portland, Oregon, United States.
Rohit VarmaDepartment of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States.
SriniVas R SaddaDoppler OCT Reading Center, Doheny Eye Institute, Los Angeles, California, United States Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, California, United States.
Doheny Eye Institute · USOregon Health & Science University · USUniversity of Southern California · USUniversity of California, Los Angeles · US

Funding

Functional and Structural Optical Coherence Tomography for GlaucomaR01EY023285 · NEI · OREGON HEALTH & SCIENCE UNIVERSITY · PI David Huang · 2013 to 2026
$8.8M
NEI NIH HHS R01 EY023285
6 · The paper itself

Abstract

purposeTo measure total retinal blood flow (TRBF) in normal, healthy Chinese Americans by using semi-automated analysis of Doppler Fourier-domain optical coherence tomography (FD-OCT) scans.

methodsTwo hundred sixty-six normal, healthy Chinese-American participants (266 eyes) were enrolled from The Chinese American Eye Study. All participants underwent complete ophthalmic examination, including best-corrected visual acuity, indirect ophthalmoscopy, and Doppler FD-OCT imaging, using the circumpapillary double circular scan protocol. Total retinal blood flow and other vascular parameters (e.g., venous and arterial cross-sectional area and their velocities) were calculated by using Doppler OCT of Retinal Circulation software. Associations between TRBF and other clinical parameters were assessed by using bivariate correlations and linear regression.

resultsThe mean age of study participants was 57.40 ± 5.60 (range, 50-82) years. The mean TRBF was 49.34 ± 10.08 (range, 27.17-78.08, 95% confidence interval: 25.98-69.10) μL/min. The mean venous area was 0.0548 (±0.0084) mm(2). Superior retinal hemispheric blood flow (25.50 ± 6.62 μL/min) was slightly greater than inferior retinal hemispheric blood flow (23.84 ± 7.19 μL/min, P = 0.008). The mean flow velocity was 15.16 ± 3.12 mm/s. There was a weak but significant negative correlation between TRBF and age (r = -0.15, P = 0.012). No significant correlation was found between TRBF and axial length (r = 0.11, P = 0.08). Retinal blood flow was not significantly correlated with any other clinical parameters, including body mass index, systolic blood pressure, diastolic blood pressure, and intraocular pressure.

conclusionsNormal Doppler OCT-derived total retinal blood values in a Chinese-American population showed considerable variability, some of which was explained by age. These observations should help design future studies evaluating TRBF in populations with eye disease.

Indexed as

AsianFourier AnalysisImage Interpretation, Computer-AssistedAgedAged, 80 and overAge FactorsBlood Flow VelocityFemaleHumansMaleMiddle AgedReference ValuesRegional Blood FlowRetinal VesselsTomography, Optical CoherenceageDoppler OCTretinal blood flow

Identifiers

PMID25670487
PMCPMC4351651
OpenAlexW2063316176

What OpenQuestion 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 OpenQuestion graph.