Evidence map›Paper›PMID 28314954›Full record

Observational studyGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2017

Retinal and choroidal vascular features in patients with retinitis pigmentosa imaged by OCT based microangiography.

Kasra A Rezaei, Qinqin Zhang, Chieh-Li Chen, Jennifer Chao, Ruikang K Wang

Open access · greenAbstract readCase ReportsObservational Study
In one paragraph

Observational study in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 41 citations in OpenAlex.

  1. Peripheral Vascular Alterations inOphthalmology science · 2026
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  7. Choriocapillaris flow loss in center-involving retinitis pigmentosa: a quantitative optical coherence tomography angiography study using a novel classification system.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2021
    Article
  8. Article
  9. Optical coherence tomography angiography findings in patients undergoing transcorneal electrical stimulation for treating retinitis pigmentosa.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2021
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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

5 authors at 1 institution in 1 country.

Kasra A RezaeiDepartment of Ophthalmology, University of Washington, 325 Ninth Avenue, Seattle, WA, 98104, USA. krezaei@uw.edu.
Qinqin ZhangDepartment of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98195, USA.
Chieh-Li ChenDepartment of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98195, USA.
Jennifer ChaoDepartment of Ophthalmology, University of Washington, 325 Ninth Avenue, Seattle, WA, 98104, USA.
Ruikang K WangDepartment of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98195, USA.
University of Washington · US

Funding

NON-INVASIVE REAL-TIME LABEL-FREE 3D IMAGING OF RETINAL MICROCIRCULATIONR01EY024158 · NEI · UNIVERSITY OF WASHINGTON · PI WANG, RUIKANG · 2014 to 2017
$1.7M
NEI NIH HHS R01 EY024158
6 · The paper itself

Abstract

purposeTo image vascular features of retinitis pigmentosa (RP) using optical coherence tomography angiography (OCTA).

methodsPatients with RP were imaged by spectral domain optical coherence tomography based angiography (OCTA). The optical microangiography (OMAG) algorithm was applied to scanned datasets to generate 3D OCTA retinal angiograms, i.e., OMAG angiograms. Motion tracking was used to minimize artifacts due to eye movement, and large field of view OMAG angiograms were achieved through a montage scanning protocol. For better visualization, depth volumes were segmented to separate the superficial retinal layers from deep outer retinal layers. The choriocapillaris and other choroidal layers were also segmented. To investigate the changes in retinal architecture, the inner segment/outer segment (IS/OS) junction to RPE layer was segmented to generate en face structural images through averaging intensity projection. Color fundus images and/or Goldmann visual fields were available for comparison of the findings to OMAG images.

resultsA total of 25 eyes (13 patients, seven women and six men) diagnosed with RP at various stages were enrolled in this study from October 2014 to January 2016 and imaged by OCTA. The resulting OMAG angiograms provided detailed visualization of retinal and choroidal vascular networks presented within the retina and choroid in a large field of view (FOV) (∼6.7 mm × 6.7 mm). All patients with a severity score greater than 3 showed abnormal microvasculature in both deep retinal and choroidal layers on OMAG images. Images of patients with a score of 4 indicating only peripheral abnormalities demonstrated relatively normal vasculature networks. Microvascular changes in the retinal and choroidal vasculature correlate with structural changes in the slab from IS/OS junction to RPE layer.

conclusionsOCTA is useful in evaluating the microvascular changes in a large FOV encompassing the maculae of patients with RP. The large FOV of OMAG angiograms, enabled by the motion tracking, provides visualization of high definition and high resolution microvascular networks at varying stages of RP. Microvascular imaging may have significant utility in the diagnosis and monitoring of disease progression in RP patients.

Indexed as

AdultAgedChoroidFemaleFluorescein AngiographyFollow-Up StudiesFundus OculiHumansMaleMicrocirculationMiddle AgedProspective StudiesReproducibility of ResultsRetinal VesselsRetinitis PigmentosaTomography, Optical CoherenceOCT-angiographyOcular imagingRetinal and choroidal vascular mapRetinitis pigmentosa

Identifiers

PMID28314954
PMCPMC11402510
OpenAlexW2596210180

What OpenQuestion holds

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LicenceTDM
Read underepoch 390

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.