Evidence map›Paper›PMID 27622906›Full record

ArticlePloS one2016

Comparing Trabeculectomy Outcomes between First and Second Operated Eyes: A Multicenter Study.

Kentaro Iwasaki, Yoshihiro Takamura, Takashi Nishida, Akira Sawada, Keiichiro Iwao, Ayano Shinmura, Shiho Kunimatsu-Sanuki, Tetsuya Yamamoto, Hidenobu Tanihara, Kazuhisa Sugiyama and 2 more

Open access · goldAbstract readClinical StudyMulticenter Study
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.3field-weighted citation impact, top 35% 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

2 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
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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

12 authors at 5 institutions in 1 country.

Kentaro IwasakiDepartment of Ophthalmology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.
Yoshihiro TakamuraDepartment of Ophthalmology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.
Takashi NishidaDepartment of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan.
Akira SawadaDepartment of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan.
Keiichiro IwaoDepartment of Ophthalmology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.
Ayano ShinmuraDepartment of Ophthalmology and Visual Science, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
Shiho Kunimatsu-SanukiDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Tetsuya YamamotoDepartment of Ophthalmology, Gifu University Graduate School of Medicine, Gifu, Japan.
Hidenobu TaniharaDepartment of Ophthalmology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.
Kazuhisa SugiyamaDepartment of Ophthalmology and Visual Science, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
Toru NakazawaDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Masaru InataniDepartment of Ophthalmology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.ORCID http://orcid.org/0000-0003-0896-996X
Gifu University · JPUniversity of Fukui · JPKanazawa University · JPKumamoto University · JPTohoku University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo compare surgical outcomes between the first and second operated eyes in patients who underwent trabeculectomy in both eyes.

methodsThis retrospective clinical cohort study at five clinical centers in Japan included 84 patients with open-angle glaucoma who underwent primary trabeculectomy in both eyes. The primary outcome was surgical success or failure, with failure being defined according to three criteria: <20% reduction of the preoperative intraocular pressure (IOP), or Criterion A, IOP >21 mmHg; Criterion B, IOP >18 mmHg; or Criterion C, IOP >15 mmHg. Cases of reoperation, a loss of light perception vision, or hypotony were also considered as "failures".

resultsThere were no significant differences in success rate for any of the three criteria between the first and second operated eyes. For patients whose first trabeculectomy was successful, when the second trabeculectomy was performed ≥2 months after the first, the survival curves for all three criteria for the second trabeculectomy were significantly worse than those for patients waiting a shorter interval between trabeculectomies (Criterion A, 52.0% vs 83.6%, P = 0.0031; Criterion B, 51.5% vs 80.4%, P = 0.026; Criterion C, 51.1% vs 80.4%, P = 0.048). In multivariable analyses, a longer interval between trabeculectomies was a significant prognostic factor for surgical failure (Criterion A, P = 0.0055; Criterion B, P = 0.0023; Criterion C, P = 0.027). However, no dependency on the interval between trabeculectomies was found among patients whose first trabeculectomy failed.

conclusionsIf the first trabeculectomy is successful, a long interval before the second trabeculectomy increases the risk of surgical failure in the second eye. This result has clinical implications for developing surgical strategies for patients with bilateral glaucoma.

Indexed as

TrabeculectomyAgedAged, 80 and overCohort StudiesFemaleGlaucoma, Open-AngleHumansIntraocular PressureJapanKaplan-Meier EstimateMaleMiddle AgedPostoperative ComplicationsReoperationRetrospective StudiesRisk Factors

Identifiers

PMID27622906
PMCPMC5021342
OpenAlexW2519279826

What OpenQuestion holds

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LicenceCC BY
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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.