Evidence map›Paper›PMID 30113530›Full record

Observational studyJournal of hypertension2019

Impact of hypertension on retinal capillary microvasculature using optical coherence tomographic angiography.

Jacqueline Chua, Calvin Woon Loong Chin, Jimmy Hong, Miao Li Chee, Thu-Thao Le, Daniel Shu Wei Ting, Tien Yin Wong, Leopold Schmetterer

Registry-linked trialOpen access · hybridAbstract readObservational Study
In one paragraph

Observational study in Journal of hypertension, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06098300 (Effects of Change in Blood Pressure on Retinal Capillary Rarefaction in Patients With Arterial Hypertension - a Pilot Study), which is not on this map. Cited by 104 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
104citing papers in PubMed, 3 pooled it
13.6field-weighted citation impact, top 1% 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.

NCT06098300 recruitingnot on this mapstarted 2023, after this paper: background citation

Effects of Change in Blood Pressure on Retinal Capillary Rarefaction in Patients With Arterial Hypertension - a Pilot Study

TypeobservationalSponsorMedical University of ViennaRan2023 to 2025Enrolled30ConditionsArterial Hypertension, Blood Pressure, High
3 · Its place in the literature

Who cites it

104 citing papers in PubMed, 3 syntheses or guidelines pooled it, 183 citations in OpenAlex.

  1. Pooled it
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  4. Trial
  5. Trial
  6. Observational
  7. Article
  8. Pathophysiology and Clinical Relevance of Microvascular Remodeling in Arterial Hypertension.High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension · 2026
    Review
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  12. Observational
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44 more citing papers are in PubMed but not listed here.

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

8 authors at 6 institutions in 3 countries.

Jacqueline ChuaSingapore Eye Research Institute, Singapore National Eye Centre.
Calvin Woon Loong ChinAcademic Clinical Program, Duke-NUS Medical School.
Jimmy HongSingapore Eye Research Institute, Singapore National Eye Centre.
Miao Li CheeSingapore Eye Research Institute, Singapore National Eye Centre.
Thu-Thao LeNational Heart Research Institute Singapore, National Heart Centre Singapore.
Daniel Shu Wei TingSingapore Eye Research Institute, Singapore National Eye Centre.
Tien Yin WongSingapore Eye Research Institute, Singapore National Eye Centre.
Leopold SchmettererSingapore Eye Research Institute, Singapore National Eye Centre.
Singapore National Eye Center · SGGTx (United States) · USNational Heart Centre Singapore · SGNational University Health System · SGNational University of Singapore · SGSingapore Eye Research Institute · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveReduction in capillary density or rarefaction is a hallmark of essential hypertension. We measured the retinal capillary density using noninvasive optical coherence tomographic angiography (OCT-A) in adults with treated systemic hypertension and determined possible correlations with ambulatory blood pressure (BP) and renal parameters.

methodsThis observational cross-sectional study consisted of 153 normal eyes from 77 nondiabetic hypertensive adults [mean (SD) age, 58 (9) years; 49% women; 23% poorly controlled BP]. Data on 24-h ambulatory BP monitoring, serum creatinine, and urine microalbumin/creatinine ratio (MCR) were collected. Estimated glomerular filtration rate (eGFR) was calculated based on CKD-EPI Creatinine Equation. Retinal capillary density measured with the OCT-A (AngioVue) at superficial (SVP) and deep vascular plexuses (DVP). Linear regression was used to investigate the association of risk factors with capillary density.

resultsRetinal capillary density (percentage) at DVP was reduced in patients with poorly controlled BP (SBP = 148 ± 8 mmHg; 27.2 ± 13.0) compared with those with well controlled BP (SBP = 125 ± 9 mmHg; 34.7 ± 11.3). In the multivariable analysis, poorly controlled BP [β = -6.49, 95% confidence interval (CI), -12.39 to -0.59], higher SBP (β = -0.23, 95% CI -0.44 to -0.02) and lower eGFR (β = 6.42, 95% CI 1.25-11.60) were associated with sparser retinal capillary density. Systemic factors were not associated with capillary density at SVP (all P > 0.05).

conclusionIn adults with treated systemic hypertension, retinal capillary density reduced with higher BP and poorer eGFR. These findings highlight the potential role of OCT-A to study early microvascular changes because of systemic hypertension.

Indexed as

HypertensionMicrovesselsRetinal VesselsAgedCross-Sectional StudiesFemaleHumansMaleMiddle AgedTomography, Optical Coherence

Identifiers

PMID30113530
PMCPMC6365272
OpenAlexW2886272716

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.