Evidence map›Paper›PMID 34903831›Full record

ArticleScientific reports2021

Prediction of glaucoma severity using parameters from the electroretinogram.

Marc Sarossy, Jonathan Crowston, Dinesh Kumar, Anne Weymouth, Zhichao Wu

Open access · goldAbstract readEvaluation Study
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.8field-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

15 citing papers in PubMed, 17 citations in OpenAlex.

  1. Selective i-wave attenuation in unilateral high myopia.Documenta ophthalmologica. Advances in ophthalmology · 2026
    Article
  2. Review
  3. Review
  4. Review
  5. Association analyses of the measurements of the photopic negative response evoked by two ISCEV protocols.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  6. A modified analysis protocol for the PhNR test.Documenta ophthalmologica. Advances in ophthalmology · 2024
    Article
  7. Article
  8. Review
  9. Article
  10. The origins of the full-field flash electroretinogram b-wave.Frontiers in molecular neuroscience · 2023
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
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 3 institutions in 2 countries.

Marc SarossyOphthalmology, Department of Surgery, University of Melbourne, Melbourne, VIC, Australia. marc@sarossy.com.
Jonathan CrowstonDuke-NUS Medical School, Singapore, Singapore.
Dinesh KumarRMIT University, Melbourne, Australia.
Anne WeymouthDepartment of Optometry and Vision Sciences, The University of Melbourne, Melbourne, Australia.
Zhichao WuOphthalmology, Department of Surgery, University of Melbourne, Melbourne, VIC, Australia.
University of Melbourne · AUDuke-NUS Medical School · SGRMIT University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Glaucoma is an optic neuropathy that results in the progressive loss of retinal ganglion cells (RGCs), which are known to exhibit functional changes prior to cell loss. The electroretinogram (ERG) is a method that enables an objective assessment of retinal function, and the photopic negative response (PhNR) has conventionally been used to provide a measure of RGC function. This study sought to examine if additional parameters from the ERG (amplitudes of the a-, b-, i-wave, as well the trough between the b- and i-wave), a multivariate adaptive regression splines (MARS; a non-linear) model and achromatic stimuli could better predict glaucoma severity in 103 eyes of 55 individuals with glaucoma. Glaucoma severity was determined using standard automated perimetry and optical coherence tomography imaging. ERGs targeting the PhNR were recorded with a chromatic (red-on-blue) and achromatic (white-on-white) stimulus with the same luminance. Linear and MARS models were fitted to predict glaucoma severity using the PhNR only or all ERG markers, derived from chromatic and achromatic stimuli. Use of all ERG markers predicted glaucoma severity significantly better than the PhNR alone (P ≤ 0.02), and the MARS performed better than linear models when using all markers (P = 0.01), but there was no significant difference between the achromatic and chromatic stimulus models. This study shows that there is more information present in the photopic ERG beyond the conventional PhNR measure in characterizing RGC function.

Indexed as

AgedAged, 80 and overElectroretinographyFemaleGlaucoma, Open-AngleHumansMaleSensitivity and SpecificityTomography, Optical Coherence

Identifiers

PMID34903831
PMCPMC8668922
OpenAlexW4200348942

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.