Evidence map›Paper›PMID 20126506›Full record

ArticleTransactions of the American Ophthalmological Society2009

The Ahmed glaucoma valve in neovascular glaucoma (An AOS Thesis).

Peter A Netland

Open access · greenAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Transactions of the American Ophthalmological Society, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 24% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Baerveldt glaucoma implant with SupramidInternational journal of ophthalmology · 2024
    Article
  7. Etiology, pathogenesis, and diagnosis of neovascular glaucoma.International journal of ophthalmology · 2022
    Review
  8. Article
  9. Transscleral cyclophotocoagulation with MicroPulseInternational ophthalmology · 2021
    Observational
  10. Neovascular glaucoma - A review.Indian journal of ophthalmology · 2021
    Review
  11. Use of laser iridoplasty in iris incarceration of a glaucoma drainage device.American journal of ophthalmology case reports · 2020
    Article
  12. Article
  13. Article
  14. Efficacy of Ahmed Glaucoma Valve Implantation on Neovascular Glaucoma.International journal of medical sciences · 2019
    Article
  15. Article
  16. Article
  17. Observational
  18. Article
  19. Review
  20. 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

1 author at 1 institution in 1 country.

Peter A NetlandDepartment of Ophthalmology, University of Virginia School of Medicine, Charlottesville, USA.
University of Virginia · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the results of Ahmed glaucoma valve surgery in neovascular glaucoma and control patients.

methodsIn this retrospective comparative study, we reviewed 76 eyes of 76 patients, comparing the surgical outcomes in control patients (N=38) to matched neovascular glaucoma patients (N=38). Success was defined as intraocular pressure (IOP) > or =6 mm Hg and < or =21 mm Hg, without further glaucoma surgery, and without loss of light perception.

resultsAverage follow-up for control and neovascular glaucoma patients was 18.4 and 17.4 months, respectively (P = .550). At last follow-up, mean IOP was 16.2 +/- 5.2 mm Hg and 15.5 +/- 12.5 mm Hg (P = .115) in control and neovascular glaucoma patients, respectively. Life-table analysis showed a significantly lower success for neovascular glaucoma patients compared with controls (P = .0096), with success at 1 year of 89.2% and 73.1%, at 2 years of 81.8% and 61.9%, and at 5 years of 81.8% and 20.6% for control and neovascular glaucoma eyes, respectively. Cox proportional hazards regression analysis showed neovascular glaucoma as a risk factor for surgical failure (odds ratio, 5.384, 95% CI, 1.22-23.84, P = .027). Although IOP control and complications were comparable between the two groups, visual outcomes were worse in neovascular glaucoma patients, with 9 eyes (23.7%) with neovascular glaucoma compared with no controls losing light perception vision (P = .002). The majority with loss of vision (5 of 9) had successful control of IOP during the postoperative period.

conclusionNeovascular glaucoma patients have greater risk of surgical failure after Ahmed glaucoma valve surgery compared with controls. Despite improved mean IOP with drainage implants, visual outcomes may be poor, possibly due to progression of underlying disease.

Indexed as

Glaucoma Drainage ImplantsAdolescentAdultAgedAged, 80 and overFemaleFollow-Up StudiesGlaucoma, NeovascularHumansIntraocular PressureKaplan-Meier EstimateLife TablesMaleMiddle AgedPostoperative PeriodProportional Hazards Models

Identifiers

PMID20126506
PMCPMC2814575
OpenAlexW1602322251

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.