Evidence map›Paper›PMID 41790402›Full record

ArticleDocumenta ophthalmologica. Advances in ophthalmology2026

Beyond the snellen chart: exploring the clinical potential of sweep visual evoked potentials for visual acuity measurement.

Asma Hermas, Michael Dollin, Rustum Karanjia, Ange-Lynca Kantungane, Hong-An Nguyen, Catherine Tsilfidis, Stuart Coupland

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Article in Documenta ophthalmologica. Advances in ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Asma HermasOttawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, ON, Canada. aaaihay@gmail.com.
Michael DollinOttawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, ON, Canada.
Rustum KaranjiaOttawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, ON, Canada.
Ange-Lynca KantunganeOttawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, ON, Canada.
Hong-An NguyenOttawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, ON, Canada.
Catherine TsilfidisDepartment of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada.
Stuart CouplandOttawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, ON, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the agreement between Snellen visual acuity (VA) and sweep visual evoked potential (sVEP) VA in individuals with normal vision and assess sVEP variability and reproducibility across multiple test sessions.

methodsThirty-nine healthy participants (78 eyes) underwent Snellen and sVEP VA testing. Ten participants (20 eyes) also underwent sVEP testing twice daily (morning and afternoon) on three separate days (120 total recordings). and Snellen VA measurements showed strong agreement, with a mean absolute difference of 0.03 LogMAR (less than one Snellen line). Forty of 78 eyes had differences within one Snellen line, while the largest discrepancy reached four lines. Statistical analysis (P = 0.201) indicated no significant difference between the two methods. sVEP reproducibility was also high, with no significant variation between morning and afternoon recordings (P = 0.67), confirming its stability as a clinical tool.

conclusionsVEP provides objective and reproducible VA measurements comparable to Snellen VA, suggesting its potential as an alternative clinical assessment tool, particularly for patients with communication challenges, cognitive impairments, or suspected malingering vision loss.

Indexed as

Evoked Potentials, VisualVision TestsVisual AcuityAdultFemaleHumansMaleMiddle AgedReproducibility of ResultsYoung AdultReproducibilitySnellen chartSweep visual evoked potential (sVEP)Visual acuity (VA)

Identifiers

PMID41790402

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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.