Evidence map›Paper›PMID 35262759›Full record

Observational studyJournal of neurology2022

Undetected ophthalmological disorders in Parkinson's disease.

Carlijn D J M Borm, Mario Werkmann, Debbie de Graaf, Femke Visser, Arno Hofer, Marina Peball, Katarzyna Smilowska, Diana Putz, Klaus Seppi, Werner Poewe and 4 more

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Journal of neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
  2. Article
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  5. Article
  6. Article
  7. Review
  8. Optic Disc Pallor in Parkinson's Disease: A UK Biobank Study.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  9. Article
  10. Article
  11. Review
  12. Article
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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

14 authors at 4 institutions in 2 countries.

Carlijn D J M BormDepartment of Neurology, Centre of Expertise for Parkinson & Movement Disorders, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, PO Box 9101, 6500 HB, Nijmegen, The Netherlands. carlijn.borm@radboudumc.nl.
Mario WerkmannDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Debbie de GraafDepartment of Neurology, Centre of Expertise for Parkinson & Movement Disorders, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Femke VisserDepartment of Neurology, Onze Lieve Vrouwe Gasthuis (OLVG), Amsterdam, The Netherlands.
Arno HoferDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Marina PeballDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Katarzyna SmilowskaDepartment of Neurology, Centre of Expertise for Parkinson & Movement Disorders, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Diana PutzDepartment of Ophthalmology, Medical University Innsbruck, Innsbruck, Austria.
Klaus SeppiDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Werner PoeweDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Carel HoyngDepartment of Ophthalmology, Radboud University Medical Centre, Nijmegen, The Netherlands.
Bastiaan R BloemDepartment of Neurology, Centre of Expertise for Parkinson & Movement Disorders, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Thomas TheelenDepartment of Ophthalmology, Radboud University Medical Centre, Nijmegen, The Netherlands.
Nienke M de VriesDepartment of Neurology, Centre of Expertise for Parkinson & Movement Disorders, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
Innsbruck Medical University · ATRadboud University Nijmegen · NLRadboud University Medical Center · NLOLVG · NL

Funding

Stichting ParkinsonFonds 36000
6 · The paper itself

Abstract

backgroundOphthalmological disorders are common and frequently disabling for people with Parkinson's disease (PD). However, details on the prevalence, severity and impact of ophthalmological disorders thus far lacking. We aimed to identify PD patients with undetected ophthalmological disorders in a large cross-sectional, observational study.

methodsWe previously delivered a screening questionnaire to detect ophthalmological symptoms (Visual impairment in PD questionnaire; VIPD-Q) to 848 patients. Here, we report on a subgroup of 102 patients who received complete ophthalmological assessment aimed at identifying clinically relevant ophthalmological diseases, which were classified as either vison-threatening or not. Impact on daily life functioning was measured using the visual functioning-25 questionnaire (VFQ-25) and fall frequency.

resultsAlmost all patients (92%) had one or more clinically relevant ophthalmological disorders. Of those, 77% had a potentially vision-threatening disease, while 34% had a potentially treatable ophthalmological disease which impacted on quality of life. The most prevalent ophthalmological disorders were dry eyes (86%), ocular misalignment (50%) and convergence insufficiency (41%). We found a weak but significant association between clinically relevant ophthalmological diseases and both fall frequency (R

conclusionsSurprisingly, in our study sample, many participants manifested previously undetected ophthalmological diseases, most of which threatened vision, impacted on daily life functioning and were amenable to treatment. Screening for these ophthalmological disorders using a questionnaire asking about symptoms seems insufficient. Instead, episodic ophthalmological assessments should be considered for PD patients, aiming to identify vision-threatening yet treatable diseases.

trial registrationDutch Trial Registration, NL7421.

Indexed as

Parkinson DiseaseCross-Sectional StudiesHumansQuality of LifeVision DisordersVision, OcularNon-motor symptomsOphthalmological disordersOphthalmologyParkinson’s diseaseVisual impairment

Identifiers

PMID35262759
PMCPMC9217779
OpenAlexW4221000225

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.