Evidence map›Paper›PMID 32966284›Full record

Trial reportPloS one2020

Evaluation of biomechanically corrected intraocular pressure using Corvis ST and comparison of the Corvis ST, noncontact tonometer, and Goldmann applanation tonometer in patients with glaucoma.

Yoshitaka Nakao, Yoshiaki Kiuchi, Hideaki Okumichi

Registry-linked trialOpen access · goldAbstract readClinical TrialComparative Study
In one paragraph

Trial report in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05161052 (Assessment of Corneal Stiffness Parameters in Keratoconus After Corneal Collagen Cross Linking Using Dynamic Scheimpflug Technology and Anterior Segment Optical Coherence Tomography.), which is not on this map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.8field-weighted citation impact, top 12% 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.

NCT05161052 naunknown statusnot on this mapstarted 2022, after this paper: background citation

Assessment of Corneal Stiffness Parameters in Keratoconus After Corneal Collagen Cross Linking Using Dynamic Scheimpflug Technology and Anterior Segment Optical Coherence Tomography.

TypeinterventionalSponsorCairo UniversityRan2022 to 2023Enrolled55ConditionsKeratoconusArmsCorvis ST (dynamic Scheimpflug technology)
3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
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  6. Observational
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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

3 authors at 1 institution in 1 country.

Yoshitaka NakaoOphthalmology and Visual Science Department, Hiroshima University, Hiroshima, Japan.ORCID 0000-0003-1280-2791
Yoshiaki KiuchiOphthalmology and Visual Science Department, Hiroshima University, Hiroshima, Japan.
Hideaki OkumichiOphthalmology and Visual Science Department, Hiroshima University, Hiroshima, Japan.ORCID 0000-0002-0943-2219
Hiroshima University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of the study was to investigate the effects of various anatomical structures on intraocular pressure (IOP) measurements obtained by the Corneal Visualization Scheimpflug Technology (Corvis ST), Goldmann applanation tonometer (GAT), and noncontact tonometer (NCT), as well as to assess the interchangeability among the four types of IOP measurement: IOP-GAT, IOP-NCT, IOP-Corvis, and biomechanically corrected IOP (bIOP-Corvis), with a particular focus on bIOP-Corvis. MATERIALS AND

methodsWe included 71 patients with primary open-angle glaucoma and assessed their IOP measurements obtained with the GAT, NCT, and Corvis ST using a repeated measures ANOVA, a paired t-test with Bonferroni correction, stepwise multiple regression analyses and Bland-Altman plots.

resultsIOP-GAT showed the highest values (13.5 ± 2.1 mmHg [mean ± standard deviation]), followed by IOP-NCT (13.2 ± 2.7 mmHg), IOP-Corvis (10.6 ± 2.8 mmHg), and bIOP-Corvis (10.0 ± 2.3 mmHg). With exceptions of bIOP-Corvis and IOP-GAT, all IOP variations were explained by regression coefficients involving the central corneal thickness. Bland-Altman plots showed a mean difference between IOP-GAT and the other IOP measurements (IOP-Corvis, bIOP-Corvis, and IOP-NCT), which were -2.90, -3.48, and -0.29 mmHg, respectively. The widths of the 95% limits of agreement between all pairs of IOP measurements were greater than 3 mmHg.

conclusionIOP values obtained with the Corvis ST, NCT, and GAT were not interchangeable. The bIOP-Corvis measurement corrected for the ocular structure.

Indexed as

AdultAgedBiomechanical PhenomenaCorneaCorneal PachymetryFemaleGlaucoma, Open-AngleHumansIntraocular PressureMaleMiddle AgedProspective StudiesRegression AnalysisTonometry, Ocular

Identifiers

PMID32966284
PMCPMC7510959
OpenAlexW3088832643

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.