Evidence map›Paper›PMID 28973313›Full record

ArticleInvestigative ophthalmology & visual science2017

Metrics and Acquisition Modes for Fixation Stability as a Visual Function Biomarker.

Etienne M Schönbach, Mohamed A Ibrahim, Xiangrong Kong, Rupert W Strauss, Beatriz Muñoz, David G Birch, Janet S Sunness, Sheila K West, Hendrik P N Scholl

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in Investigative ophthalmology & visual science, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

13 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Detection of Visual Fatigue Using Eye Tracking and a Wearable Device.Investigative ophthalmology & visual science · 2026
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  5. Eye Tracking in Optometry: A Systematic Review.Journal of eye movement research · 2023
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  7. Fundus motion during mfERG testing.Documenta ophthalmologica. Advances in ophthalmology · 2021
    Article
  8. Clinical Perspectives and Trends: Microperimetry as a Trial Endpoint in Retinal Disease.Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde · 2021
    Review
  9. Article
  10. Article
  11. Inherited Retinal Degenerations: Current Landscape and Knowledge Gaps.Translational vision science & technology · 2018
    Article
  12. Review
  13. 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

9 authors at 7 institutions in 4 countries.

Etienne M SchönbachWilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
Mohamed A IbrahimWilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
Xiangrong KongWilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
Rupert W StraussWilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
Beatriz MuñozWilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
David G BirchRetina Foundation of the Southwest, Dallas, Texas, United States.
Janet S SunnessHoover Low Vision Rehabilitation Services, Greater Baltimore Medical Center, Baltimore, Maryland, United States.
Sheila K WestWilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
Hendrik P N SchollWilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
Johns Hopkins University · USGreater Baltimore Medical Center · USJohns Hopkins Medicine · USMoorfields Eye Hospital · GBRetina Foundation of the Southwest · USUniversity of Basel · CHUniversity of Massachusetts Amherst · US

Funding

MEASURES OF HUMAN RECEPTOR AND POST RECEPTOR ACTIVITYR01EY009076 · NEI · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI BIRCH, DAVID G, HOOD, DONALD C. · 1991 to 2021
$8.3M
NEI NIH HHS R01 EY009076
6 · The paper itself

Abstract

Purpose: To compare different metrics and acquisition modes of fixation stability as a new visual function biomarker in a large cohort of patients with ABCA4-related Stargardt disease from the multicenter prospective ProgStar study. Methods: Fixation was tested during a separate fixation exam and also dynamically during a sensitivity exam, using fundus-tracking microperimetry (Nidek MP-1). Fixation data were analyzed using the bivariate contour ellipse area (BCEA), the 2/4 degree method, and the Fujii classification. Results: In a total of 235 patients, the mean BCEA was larger when measured during the sensitivity exam (418 eyes; 12.5 vs. 4.6 deg2 during the fixation task in 427 eyes). Correlations between the two tests were generally weak. Fixation stability during the sensitivity test was significantly correlated with visual acuity. Comparing the BCEA values and the corresponding Fujii categories for these eyes revealed ranges of overlap where an eye with one defined BCEA value can fall into each of the three Fujii categories. Conclusions: Patients may have limited ability to fixate over defined time periods, which leads to significant differences between shorter and longer measurements of fixation stability. The most appropriate way to use this functional biomarker appears to be using continuous metrics for fixation stability, such as the BCEA, during a macular sensitivity test.

Indexed as

AdultAgedAged, 80 and overBiomarkersFemaleFixation, OcularHumansMacula LuteaMacular DegenerationMaleMiddle AgedPredictive Value of TestsProspective StudiesSensitivity and SpecificityStargardt DiseaseVisual AcuityBiomarkers

Identifiers

PMID28973313
PMCPMC6733530
OpenAlexW2757934407

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.