Evidence map›Paper›PMID 34705132›Full record

Observational studyDocumenta ophthalmologica. Advances in ophthalmology2022

A three-year longitudinal study of retinal function and structure in patients with multiple sclerosis.

James V M Hanson, Mei-Yee Ng, Helen K Hayward-Koennecke, Sven Schippling, Kelly A Reeve, Christina Gerth-Kahlert

Open access · greenAbstract readObservational Study
In one paragraph

Observational study in Documenta ophthalmologica. Advances in ophthalmology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.4field-weighted citation impact, top 41% 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

4 citing papers in PubMed, 3 citations in OpenAlex.

  1. Article
  2. Retinal Function in Advanced Multiple Sclerosis.Investigative ophthalmology & visual science · 2024
    Observational
  3. Article
  4. 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

6 authors at 2 institutions in 1 country.

James V M HansonDepartment of Ophthalmology, University Hospital Zurich and University of Zurich, Frauenklinikstrasse 24, 8091, Zurich, Switzerland. james.hanson@usz.ch.ORCID 0000-0003-3383-4856
Mei-Yee NgMasters Program in Biostatistics, University of Zurich, Hirschengraben 84, 8001, Zurich, Switzerland.
Helen K Hayward-KoenneckeClinic for Neurology, Neuroimmunology and Multiple Sclerosis Research, University Hospital Zurich and University of Zurich, Frauenklinikstrasse 26, 8091, Zurich, Switzerland.
Sven SchipplingMultimodal Imaging in Neuroimmunological Diseases (MINDS), University Hospital Zurich and University of Zurich, Frauenklinikstrasse 26, 8091, Zurich, Switzerland.
Kelly A ReeveInstitute for Epidemiology, Biostatistics, and Prevention, Department of Biostatistics, University of Zurich, Hirschengraben 84, 8001, Zurich, Switzerland.
Christina Gerth-KahlertDepartment of Ophthalmology, University Hospital Zurich and University of Zurich, Frauenklinikstrasse 24, 8091, Zurich, Switzerland.
University of Zurich · CHUniversity Hospital of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundResearchers have in recent years begun to investigate ophthalmological manifestations of multiple sclerosis (MS) other than optic neuritis (ON), and it is now clear that changes to retinal function (measured using the electroretinogram, ERG) and structure (measured using optical coherence tomography, OCT) are found in MS patients irrespective of prior ON episodes. ERG results are consistent with dysfunctional bipolar cells, as in other autoimmune diseases. To date, studies have presented only cross-sectional data regarding ERG and OCT. We, therefore, studied the longitudinal course of ERG and OCT in patients with MS, as well as the effect of disability changes and non-ON clinical relapses on these functional and structural measures.

methodsMS patients (n = 23) participating in an ongoing longitudinal observational study were invited to take part in a 3-year ophthalmological substudy. ERG and OCT were performed, and measures of MS-related disability and relapse history were obtained. Study visits were repeated annually. ERG peak times, rod b-wave amplitude, mixed rod/cone and cone b-/a-wave amplitude ratios, thickness of the peripapillary retinal nerve fibre layer, and volumes of the segmented retinal layers/complexes were analysed. Using generalised estimating equation models adjusted for age, ON, and MS treatment status, we assessed changes to ERG and OCT over the study duration, the effect of changes in disability and recent non-ON MS relapses on ERG and OCT, and the effect of selected OCT parameters on corresponding ERG parameters.

resultsAt the group level, small fluctuations of several ERG peak times were recorded, with OCT values remaining stable. Increased disability between visits was associated with significant prolongation of mixed rod-cone ERG b-wave peak times. No evidence of associations between OCT and ERG parameters was observed.

conclusionsRetinal bipolar cell function may be affected by changes in disability in patients with MS; however, recent non-ON MS clinical relapses appear not to affect ERG or OCT results. As ERG changes in MS patients over 3 years are likely to be small and of uncertain clinical relevance, longitudinal studies of retinal function in MS should be planned over an extended period.

Indexed as

Multiple SclerosisOptic NeuritisCross-Sectional StudiesElectroretinographyHumansLongitudinal StudiesRecurrenceTomography, Optical CoherenceBipolar cellsElectroretinogramMultiple sclerosisOptical coherence tomographyRetina

Identifiers

PMID34705132
PMCPMC8882570
OpenAlexW3209511405

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.