Evidence mapPaperPMID 32939747Full record

ArticleOphthalmology and therapy2020

Short-Term Steady-State Pattern Electroretinography Changes Using a Multi-Pressure Dial in Ocular Hypertensive, Glaucoma Suspect, and Mild Open-Angle Glaucoma Patients: A Randomized, Controlled, Prospective, Pilot Study.

Jeremy J Kudrna, Tanner J Ferguson, Russell J Swan, Steven J Ferguson, Brandon J Baartman, Adam R Bleeker, Ramu G Sudhagoni, John P Berdahl, Michael D Greenwood

Open access · goldAbstract read
In one paragraph

Article in Ophthalmology and therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-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

3 citing papers in PubMed, 4 citations in OpenAlex.

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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

9 authors at 6 institutions in 1 country.

Jeremy J KudrnaDepartment of Ophthalmology, Penn State College of Medicine, Hershey, PA, USA. jkudrna@pennstatehealth.psu.edu.ORCID http://orcid.org/0000-0003-2608-9456
Tanner J FergusonCole Eye Institute, Cleveland, OH, USA.
Russell J SwanVance Thompson Vision, Bozeman, MT, USA.
Steven J FergusonDunes Eye Consultants, Dakota Dunes, SD, USA.
Brandon J BaartmanVance Thompson Vision, Omaha, NE, USA.
Adam R BleekerUniversity of South Dakota Sanford School of Medicine, Sioux Falls, SD, USA.
Ramu G SudhagoniHemoSonics, LLC, Charlottesville, VA, USA.
John P BerdahlVance Thompson Vision, Sioux Falls, SD, USA.
Michael D GreenwoodVance Thompson Vision, West Fargo, ND, USA.
Vance Thompson Vision · USCleveland Eye Clinic · USHemoSonics (United States) · USMinnesota Eye Consultants · USPenn State Milton S. Hershey Medical Center · USUniversity of South Dakota · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThis study evaluates the effects of the multi-pressure dial (MPD) on steady-state pattern electroretinography (ss-pERG) parameters. The study is a randomized, controlled, prospective, pilot trial in a private practice setting with ocular hypertensive (OHT), glaucoma suspect, and open-angle glaucoma (OAG) subjects.

methodsThis study included nine patients (64 ± 9.0 years, nine female) with OHT, glaucoma suspect, or mild OAG. One eye of each subject was randomized to receive negative periocular pressure, while the contralateral eye served as the intrasubject control through the goggle without negative pressure. The Diopsys High Contrast Sensitivity ss-pERG protocol was conducted on both eyes of each subject while wearing the MPD device. Application of negative periocular pressure was set at 50% of baseline intraocular pressure for each study eye.

resultsFollowing 2 h of negative periocular pressure application, the difference in MagnitudeD (MagD) from baseline for eyes randomized to receive negative periocular pressure (+ 0.17 versus  - 0.26) was statistically significant (p = 0.023). Over the same period, the change in MagD/Magnitude (MagD/Mag ratio) from baseline for eyes randomized to receive negative periocular pressure was also higher (+ 0.14 versus  - 0.16), compared to the control eyes, approached significance (p = 0.059).

conclusionsFollowing 2 h of MPD wear, the measured MagD and MagD/Mag ratio improved compared to control, suggesting that negative periocular pressure application to the anterior globe can lead to short-term improvement in one measure of retinal ganglion cell function.

Indexed as

Glaucoma managementMulti-pressure dialSteady-state pattern electroretinogram

Identifiers

PMID32939747
PMCPMC7708609
OpenAlexW3087337726

What Socratic holds

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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 Socratic graph.