Evidence map›Paper›PMID 22244522›Full record

Trial reportAmerican journal of ophthalmology2012

Postoperative complications in the Tube Versus Trabeculectomy (TVT) study during five years of follow-up.

Steven J Gedde, Leon W Herndon, James D Brandt, Donald L Budenz, William J Feuer, Joyce C Schiffman, Tube Versus Trabeculectomy Study Group

2 registry-linked trialsAbstract readComparative StudyMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in American journal of ophthalmology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 370 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
370citing papers in PubMed, 9 pooled it
–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.

NCT01633775 completednot on this map

Re-Trabeculectomy Versus Ahmed Glaucoma Valve Implantation in Secondary Surgical Management of Patients With Refractory Primary Open Angle Glaucoma: a Three-year Comparative Study

TypeobservationalSponsorVanak Eye Surgery CenterRan2007 to 2012Enrolled100ConditionsRefractory Primary Open Angle GlaucomaArmsImplantation of Ahmed glaucoma tube shunt, and Trabeculectomy with MMC
NCT06174324 unknown statusnot on this mapstarted 2021, after this paper: background citation

Visual Field Progression and RNFL Change After PreserFlo MicroShunt Implantation - a Prospective Cohort Study at the Ophthalmology Department Klinikum Klagenfurt

TypeobservationalSponsorKlinikum Klagenfurt am WörtherseeRan2021 to 2024Enrolled100ConditionsGlaucoma, Progression, SurgeryArmsPreserFlo Microshunt
3 · Its place in the literature

Who cites it

370 citing papers in PubMed, 9 syntheses or guidelines pooled it.

  1. Minimally invasive trabecular meshwork surgery for open-angle glaucoma.The Cochrane database of systematic reviews · 2026
    Pooled it
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  3. PreserFlo MicroShunt versus trabeculectomy: an updated meta-analysis and systematic review.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Pooled it
  4. Minimally Invasive Glaucoma Surgery.Deutsches Arzteblatt international · 2025
    Pooled it
  5. Pooled it
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  7. Ab interno supraciliary microstent surgery for open-angle glaucoma.The Cochrane database of systematic reviews · 2021
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  19. Treatment outcomes in the neovascular glaucoma tube versus trabeculectomy study.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2021
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  20. Twelve-month results of ab interno trabeculectomy with Kahook Dual Blade: an interventional, randomized, controlled clinical study.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2021
    Trial

310 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Steven J GeddeBascom Palmer Eye Institute, Miller School of Medicine, University of Miami, Florida, USA. sgedde@med.miami.edu
Leon W Herndon
James D Brandt
Donald L Budenz
William J Feuer
Joyce C Schiffman
Tube Versus Trabeculectomy Study Group

Funding

Shared Equipment ModuleP30EY014801 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI Dmitry V Ivanov · 2004 to 2026
$12.2M
Vision Research CoreP30EY021721 · NEI · UNIVERSITY OF FLORIDA · PI HAUSWIRTH, WILLIAM W · 2011 to 2015
$2.8M
NEI NIH HHS EY014801NEI NIH HHS P30 EY014801NEI NIH HHS P30 EY021721
6 · The paper itself

Abstract

purposeTo describe postoperative complications encountered in the Tube Versus Trabeculectomy (TVT) Study during 5 years of follow-up.

designMulticenter randomized clinical trial.

methodsSETTINGS: Seventeen clinical centers. STUDY POPULATION: Patients 18 to 85 years of age who had previous trabeculectomy and/or cataract extraction with intraocular lens implantation and uncontrolled glaucoma with intraocular pressure (IOP) ≥18 mm Hg and ≤40 mm Hg on maximum tolerated medical therapy.

interventionsTube shunt (350-mm(2) Baerveldt glaucoma implant) or trabeculectomy with mitomycin C (MMC 0.4 mg/mL for 4 minutes).

main outcome measuresSurgical complications, reoperations for complications, visual acuity, and cataract progression.

resultsEarly postoperative complications occurred in 22 patients (21%) in the tube group and 39 patients (37%) in the trabeculectomy group (P = .012). Late postoperative complications developed in 36 patients (34%) in the tube group and 38 patients (36%) in the trabeculectomy group during 5 years of follow-up (P = .81). The rate of reoperation for complications was 22% in the tube group and 18% in the trabeculectomy group (P = .29). Cataract extraction was performed in 13 phakic eyes (54%) in the tube group and 9 phakic eyes (43%) in the trabeculectomy group (P = .43).

conclusionsA large number of surgical complications were observed in the TVT Study, but most were transient and self-limited. The incidence of early postoperative complications was higher following trabeculectomy with MMC than tube shunt surgery. The rates of late postoperative complications, reoperation for complications, and cataract extraction were similar with both surgical procedures after 5 years of follow-up.

Indexed as

Glaucoma Drainage ImplantsPostoperative ComplicationsTrabeculectomyAdolescentAdultAgedAged, 80 and overAlkylating AgentsCombined Modality TherapyFemaleFollow-Up StudiesGlaucomaHumansIntraocular PressureMaleMiddle AgedAlkylating AgentsMitomycin

Identifiers

PMID22244522
PMCPMC3653167

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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.