Evidence map›Paper›PMID 32669832›Full record

ArticleClinical ophthalmology (Auckland, N.Z.)2020

iStent Trabecular Microbypass Stent Implantation with Phacoemulsification in Patients with Open-Angle Glaucoma: 6-Year Outcomes.

Tanner J Ferguson, Keegan B Mechels, Zachary Dockter, Adam Bleeker, Mitch Ibach, Justin Schweitzer, John P Berdahl

Abstract read
In one paragraph

Article in Clinical ophthalmology (Auckland, N.Z.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
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

16 citing papers in PubMed.

  1. Article
  2. Visual Function After Schlemm's Canal-Based MIGS.Journal of clinical medicine · 2025
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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

7 authors.

Tanner J FergusonCole Eye Institute, Cleveland Clinic, Cleveland, OH, USA.ORCID 0000-0002-7754-0465
Keegan B MechelsCole Eye Institute, Cleveland Clinic, Cleveland, OH, USA.
Zachary DockterUniversity of South Dakota Sanford School of Medicine, Sioux Falls, SD, USA.
Adam BleekerUniversity of South Dakota Sanford School of Medicine, Sioux Falls, SD, USA.ORCID 0000-0001-9672-1299
Mitch IbachVance Thompson Vision, Sioux Falls, SD, USA.
Justin SchweitzerVance Thompson Vision, Sioux Falls, SD, USA.
John P BerdahlVance Thompson Vision, Sioux Falls, SD, USA.ORCID 0000-0002-5468-7405

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the long-term safety and efficacy of an iStent trabecular microbypass stent in combination with cataract surgery in eyes with primary open-angle glaucoma (POAG).

settingPrivate practice; Sioux Falls, South Dakota.

designRetrospective, consecutive case series.

methodsThis case series included eyes implanted with a single trabecular microbypass stent in combination with phacoemulsification in patients with mild to severe POAG. Data were collected preoperatively and at day 1, week 1, month 1, and up to 6 years postoperatively. Primary outcome measures included mean intraocular pressure (IOP) and number of glaucoma medications. Safety was noted by assessing the incidence of IOP spikes and need for additional surgery.

resultsThe study comprised 411 eyes. Mean IOP was reduced to 14.9±4.2 mmHg compared to 18.8±5.6 mmHg at baseline at 6 years postoperative. The mean number of medications was reduced to 1.2±1.0 from 1.4±1.1 at baseline. In eyes with severe stage of disease, there was a mean IOP reduction >6 mmHg at 6 years postoperative. Eyes with baseline IOP ≥18 mmHg achieved a more robust reduction in IOP. Fifteen eyes underwent a secondary glaucoma procedure. There were no intra- or postoperative complications.

conclusionTrabecular microbypass stent implantation in combination with cataract surgery provides a sustained IOP reduction in eyes with mild-to-severe POAG. The degree of IOP reduction was more significant in eyes with higher baseline IOP and severe stage of disease.

Indexed as

microinvasive glaucoma surgeryMIGSprimary open-angle glaucomasurgical glaucomatrabecular microbypass stent

Identifiers

PMID32669832
PMCPMC7337430

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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.