Evidence map›Paper›PMID 32580956›Full record

Observational studyThe British journal of ophthalmology2021

Reduced vessel density in deep capillary plexus correlates with retinal layer thickness in choroideremia.

Alessandro Arrigo, Francesco Romano, Maurizio Battaglia Parodi, Peter Charbel Issa, Johannes Birtel, Francesco Bandello, Robert E Maclaren

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in The British journal of ophthalmology, 2021. 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
2.4field-weighted citation impact, top 10% 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, 22 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Rekindling Vision: Innovative Strategies for Treating Retinal Degeneration.International journal of molecular sciences · 2025
    Review
  5. Macular vessel density in patients with refractory diabetic macular edema in different stages of nonproliferative diabetic retinopathy.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2025
    Article
  6. Article
  7. The effect of heart rate variability on the choroidal vascularity of the optical coherence tomography and angiography in central serous chorioretinopathy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Article
  8. Loss of REP1 impacts choroidal melanogenesis and vasculogenesis in choroideremia.Biochimica et biophysica acta. Molecular basis of disease · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Choroideremia: The Endpoint Endgame.International journal of molecular sciences · 2023
    Review
  13. Review
  14. Article
  15. Optical Coherence Tomography Angiography inJournal of clinical medicine · 2023
    Article
  16. Article
  17. Review
  18. 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 5 institutions in 3 countries.

Alessandro ArrigoDepartment of Ophthalmology, Scientific Institute San Raffaele, University Vita-Salute, via Olgettina, 60, 20132, Milan, Italy alessandro.arrigo@hotmail.com.ORCID 0000-0003-4715-8414
Francesco RomanoDepartment of Ophthalmology, Scientific Institute San Raffaele, University Vita-Salute, via Olgettina, 60, 20132, Milan, Italy.ORCID 0000-0002-0458-9727
Maurizio Battaglia ParodiDepartment of Ophthalmology, Scientific Institute San Raffaele, University Vita-Salute, via Olgettina, 60, 20132, Milan, Italy.
Peter Charbel IssaOxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
Johannes BirtelOxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
Francesco BandelloDepartment of Ophthalmology, Scientific Institute San Raffaele, University Vita-Salute, via Olgettina, 60, 20132, Milan, Italy.ORCID 0000-0003-3238-9682
Robert E MaclarenOxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, and Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.
San Raffaele University of Rome · ITNuffield Orthopaedic Centre · GBUniversity of Bonn · DEUniversity of Oxford · GBVita-Salute San Raffaele University · IT

Funding

Department of Health 12/66/35
6 · The paper itself

Abstract

backgroundTo assess retinal layer thickness in choroideremia (CHM) and to reveal its correlation with optical coherence tomography (OCT) angiography (OCTA) findings.

methodsThe study was designed as an observational, cross-sectional clinical series of patients with CHM, which included 14 CHM eyes and 14 age-matched controls. Multimodal imaging included OCT and OCTA. The vessel density (VD) of superficial capillary (SCP), deep capillary (DCP) and choriocapillaris (CC) plexuses was analysed by OCTA. The apparently preserved retinal islet and atrophic regions were investigated separately. Main outcome measures were as follows: best-corrected visual acuity (BCVA), total retinal layers, ganglion cell layer (GCL), inner plexiform layer (IPL), inner nuclear layer (INL), outer plexiform layer (OPL), outer nuclear layer (ONL), ellipsoid zone-retinal pigment epithelium (EZ-RPE) layer, choroidal thickness and VDs of SCP, DCP and of CC.

resultsMean BCVA was 0.0±0.0 LogMAR in both groups. GCL, ONL, EZ-RPE and choroid were significantly thinned in CHM, particularly in the atrophic region. OPL was unaffected in the apparently preserved islet, whereas INL and IPL were similarly thinned in the atrophic and apparently preserved retina. DCP appeared severely affected in both regions, while CC was only altered in the atrophic retina. Significant correlations were found between OCT and OCTA parameters.

conclusionsOur study showed severe alterations in both outer and inner retinal layers of patients with CHM. The extended retinal involvement might be the consequence of neuronal and vascular trophic factor reduction produced by the primarily altered RPE and/or secondary Müller glial cell reaction.

Indexed as

Visual AcuityAdultCapillariesChoroideremiaCross-Sectional StudiesFemaleFluorescein AngiographyFollow-Up StudiesFundus OculiHumansMaleMicrovascular DensityMiddle AgedRetinal Pigment EpitheliumRetinal VesselsTomography, Optical CoherencechoroideremiaDystrophyGeneticsImagingMaculaRetina

Identifiers

PMID32580956
PMCPMC8077222
OpenAlexW3037685433

What OpenQuestion holds

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Registered trials

None linked

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.