Evidence map›Paper›PMID 22514688›Full record

ArticlePloS one2012

Optical coherence tomography in parkinsonian syndromes.

Philipp Albrecht, Ann-Kristin Müller, Martin Südmeyer, Stefano Ferrea, Marius Ringelstein, Eva Cohn, Orhan Aktas, Thomas Dietlein, Alexandra Lappas, Andreas Foerster and 3 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 98 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed, 6 pooled it
9.9field-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.

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

98 citing papers in PubMed, 6 syntheses or guidelines pooled it, 175 citations in OpenAlex.

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  10. Optical coherence tomography findings in multiple system atrophy: insights into disease diagnosis, clinical correlations, and dopaminergic degeneration.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
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38 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

13 authors at 2 institutions in 1 country.

Philipp AlbrechtDepartment of Neurology, Medical Faculty, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany. phil.albrecht@gmail.com
Ann-Kristin Müller
Martin Südmeyer
Stefano Ferrea
Marius Ringelstein
Eva Cohn
Orhan Aktas
Thomas Dietlein
Alexandra Lappas
Andreas Foerster
Hans-Peter Hartung
Alfons Schnitzler
Axel Methner
Heinrich Heine University Düsseldorf · DEUniversity Hospital Cologne · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

objectiveParkinson's disease (PD) and the atypical parkinsonian syndromes multiple system atrophy (MSA), progressive supranuclear palsy (PSP) and corticobasal syndrome (CBS) are movement disorders associated with degeneration of the central nervous system. Degeneration of the retina has not been systematically compared in these diseases.

methodsThis cross-sectional study used spectral-domain optical coherence tomography with manual segmentation to measure the peripapillar nerve fiber layer, the macular thickness, and the thickness of all retinal layers in foveal scans of 40 patients with PD, 19 with MSA, 10 with CBS, 15 with PSP, and 35 age- and sex-matched controls.

resultsThe mean paramacular thickness and volume were reduced in PSP while the mean RNFL did not differ significantly between groups. In PSP patients, the complex of retinal ganglion cell- and inner plexiform layer and the outer nuclear layer was reduced. In PD, the inner nuclear layer was thicker than in controls, MSA and PSP. Using the ratio between the outer nuclear layer and the outer plexiform layer with a cut-off at 3.1 and the additional constraint that the inner nuclear layer be under 46 µm, we were able to differentiate PSP from PD in our patient sample with a sensitivity of 96% and a specificity of 70%.

conclusionDifferent parkinsonian syndromes are associated with distinct changes in retinal morphology. These findings may serve to facilitate the differential diagnosis of parkinsonian syndromes and give insight into the degenerative processes of patients with atypical parkinsonian syndromes.

Indexed as

AdultAgedAged, 80 and overCross-Sectional StudiesFemaleHumansMaleMiddle AgedParkinsonian DisordersRetinaTomography, Optical Coherence

Identifiers

PMID22514688
PMCPMC3325949
OpenAlexW1983444691

What OpenQuestion holds

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LicenceCC BY
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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.