Evidence map›Paper›PMID 27959905›Full record

ArticlePloS one2016

Ocular Blood Flow Measurements in Healthy White Subjects Using Laser Speckle Flowgraphy.

Nikolaus Luft, Piotr A Wozniak, Gerold C Aschinger, Klemens Fondi, Ahmed M Bata, René M Werkmeister, Doreen Schmidl, Katarzyna J Witkowska, Matthias Bolz, Gerhard Garhöfer and 1 more

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06398223 (Ocular Perfusion in Patients With Unilateral Carotid Artery Stenosis), which is not on this map. Cited by 60 papers.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed
6.0field-weighted citation impact, top 3% 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.

NCT06398223 unknown statusnot on this mapstarted 2024, after this paper: background citation

Ocular Perfusion in Patients With Unilateral Carotid Artery Stenosis

TypeobservationalSponsorMedical University of ViennaRan2024 to 2026Enrolled45ConditionsCarotid Artery StenosisArmsCarotid endarterectomy (CEA), Carotid artery stenting
3 · Its place in the literature

Who cites it

60 citing papers in PubMed, 94 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Laser speckle flowgraphy (LSFG) in retinal vein occlusion and central serous chorioretinopathy: a systematic review of the recent literature.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Review
  4. Review
  5. Article
  6. 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
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

11 authors at 5 institutions in 4 countries.

Nikolaus LuftDepartment of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
Piotr A WozniakDepartment of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
Gerold C AschingerCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.
Klemens FondiDepartment of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
Ahmed M BataDepartment of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
René M WerkmeisterCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.
Doreen SchmidlDepartment of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
Katarzyna J WitkowskaDepartment of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
Matthias BolzDepartment of Ophthalmology, Kepler University Hospital, Linz, Austria.
Gerhard GarhöferDepartment of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
Leopold SchmettererDepartment of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria.
Medical University of Vienna · ATKepler Universitätsklinikum · ATMedical University of Warsaw · PLNanyang Technological University · SGTU Wien · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo assess the feasibility and reliability of Laser Speckle Flowgraphy (LSFG) to measure ocular perfusion in a sample of healthy white subjects and to elucidate the age-dependence of the parameters obtained.

methodsThis cross-sectional study included 80 eyes of 80 healthy, non-smoking white subjects of Western European descent between 19 and 79 years of age. A commercial LSFG instrument was applied to measure ocular blood flow at the optic nerve head (ONH) three successive times before and after pharmacological pupil dilation. The mean blur rate (MBR), a measure of relative blood flow velocity, was obtained for different regions of the ONH. Eight parameters of ocular perfusion derived from the pulse-waveform analysis of MBR including blowout time (BOT) and falling rate (FR) were also recorded.

resultsArtifact-free LSFG images meeting the quality criteria for automated image analysis were obtainable in 93.8% without pupil dilation and in 98.8% with pharmacological pupil dilation. Measurements of MBR showed excellent repeatability with intraclass correlation coefficients ≥ 0.937 and were barely affected by pupil dilation. The majority of pulse-waveform derived variables exhibited equally high repeatability. MBR-related blood flow indices exhibited significant age dependence (p<0.001). FR (r = 0.747, p<0.001) and BOT (r = -0.714, p<0.001) most strongly correlated with age.

conclusionsLSFG represents a reliable method for the quantitative assessment of ocular blood flow in white subjects. Our data affirms that the LSFG-derived variables FR and BOT may be useful biomarkers for age-related changes in ocular perfusion.

Indexed as

Laser-Doppler FlowmetryAdolescentAdultAgedAge FactorsArtifactsBlood Flow VelocityBlood PressureCross-Sectional StudiesFemaleHealthy VolunteersHemodynamicsHumansImage Processing, Computer-AssistedLasersMale

Identifiers

PMID27959905
PMCPMC5154568
OpenAlexW2562274154

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.