Evidence map›Paper›PMID 39947711›Full record

ArticleBMJ open ophthalmology2025

Minimally invasive glaucoma surgery: comparison of Hydrus microstent with iStent

Krishna Komzak, Penelope L Allen, Tze'Yo Toh

Abstract readComparative Study
In one paragraph

Article in BMJ open ophthalmology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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.

Krishna KomzakUniversity of Tasmania, Launceston, Tasmania, Australia komzakk@utas.edu.au.ORCID 0000-0002-1787-3751
Penelope L AllenCentre for Rural Health, University of Tasmania Launceston Clinical School, Launceston, Tasmania, Australia.
Tze'Yo TohLaunceston Eye Doctors, Launceston, Tasmania, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo evaluate and compare the efficacy of a single Hydrus and double iStent

methodsThe study was designed as a prospective comparative case series. Patients with POAG undergoing trabecular microbypass stent insertion in addition to cataract surgery were recruited and consent was obtained. Baseline demographic information and preoperative, intraoperative and postoperative outcomes including intraocular pressure (IOP), visual acuity and topical glaucoma medication use were recorded and analysed. Treatment outcomes were analysed after propensity score matching to adjust for baseline differences between the two groups. Primary success was defined as an IOP of ≤18 and ≥20% IOP reduction at 12 months; other outcomes included IOP ≤15 mm Hg and ≤21 mm Hg. These were measured against complete success (no medications) and qualified success (one or more medications).

resultsThe study comprised 85 eyes in the Hydrus group and 100 eyes in the iStent

conclusionAfter adjusting for baseline differences, there was no statistically significant difference between combined Hydrus microstent implantation and cataract surgery when compared with the iStent

Indexed as

Glaucoma Drainage ImplantsGlaucoma, Open-AngleMinimally Invasive Surgical ProceduresStentsAgedFemaleFollow-Up StudiesHumansIntraocular PressureMaleMiddle AgedProspective StudiesTonometry, OcularTreatment OutcomeVisual AcuityGlaucomaIntraocular pressureOcular HypertensionProspective Studies

Identifiers

PMID39947711
PMCPMC11831292

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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.