Evidence map›Paper›PMID 33149544›Full record

ArticleClinical ophthalmology (Auckland, N.Z.)2020

Two-Year Multicenter Outcomes of iStent

Colin Clement, Frank Howes, Alexandros S Ioannidis, Michael Shiu, David Manning, Jed Lusthaus, Ridia Lim, Simon E Skalicky, Todd Goodwin

Open access · goldAbstract 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 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.4field-weighted citation impact, top 10% 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

13 citing papers in PubMed, 34 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 5 institutions in 1 country.

Colin ClementEye Associates, Sydney, NSW, Australia.ORCID 0000-0003-1484-2615
Frank HowesEye & Laser Centre, Gold Coast, QLD, Australia.ORCID 0000-0002-6740-9914
Alexandros S IoannidisVision Eye Institute, Melbourne, VIC, Australia.ORCID 0000-0002-6066-1877
Michael ShiuLaser Sight Centre, Melbourne, VIC, Australia.
David ManningHunter Cataract & Eye Centre, Charlestown, NSW, Australia.ORCID 0000-0002-8796-4448
Jed LusthausGlaucoma Unit, Sydney Eye Hospital, Sydney, NSW, Australia.ORCID 0000-0002-4111-5408
Ridia LimGlaucoma Unit, Sydney Eye Hospital, Sydney, NSW, Australia.ORCID 0000-0002-1334-6882
Simon E SkalickyDepartment of Surgery Ophthalmology, University of Melbourne, Melbourne, VIC, Australia.ORCID 0000-0001-8022-8002
Todd GoodwinNQ Eye Specialists, Currajong, QLD, Australia.
The University of Sydney · AUCity Eye Centre · AUSydney Hospital · AUThe University of Melbourne · AUVision Eye Institute · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis multicenter study evaluated 2-year effectiveness and safety following implantation of two second-generation trabecular micro-bypass stents (iStent MATERIALS AND

methodsThis was a retrospective study of iStent

resultsA total of 340 eyes underwent surgery and had 24-month follow-up data. At 24 months, mean IOP decreased by 16% from 16.4±4.7 mmHg preoperatively to 13.7±3.1 mmHg (p<0.001), and 77% of eyes achieved IOP of ≤15 mmHg versus 49% preoperatively (p<0.001). Mean number of medications decreased by 67% to 0.49±0.95 versus 1.49±1.20 preoperatively (p<0.001), with 74% of eyes medication-free versus 25% preoperatively (p<0.001), and 14% of eyes on ≥2 medications versus 46% preoperatively (p<0.001). Medication burden was reduced or stable in 98% of eyes versus preoperative. Stratified analyses showed significant IOP and medication reductions across glaucoma subtypes (POAG, ACG, NTG, OHT): 13-22% for IOP (p<0.01 for all) and 62-100% for medication (p<0.001 for all). Favorable safety included few adverse events; stable CDR, VF, and visual acuity; and filtering surgery in only 8 eyes (2.4%) over 2 years.

conclusionThis 340-eye multicenter dataset provides robust evidence of the safety and efficacy of iStent

Indexed as

glaucomaintraocular pressureiStent injectmicroinvasive glaucoma surgeryMIGSmulticentersecond-generation

Identifiers

PMID33149544
PMCPMC7604539
OpenAlexW3097757463

What OpenQuestion holds

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LicenceCC BY-NC
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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.