Evidence map›Paper›PMID 34901749›Full record

ArticleTherapeutic advances in ophthalmology

Intravitreal bevacizumab prior to vitrectomy for proliferative diabetic retinopathy: a systematic review.

Panagiotis Dervenis, Nikolaos Dervenis, David Steel, Teresa Sandinha, Paris Tranos, Panagiotis Vasilakis, Ioannis Liampas, Chrysoula Doxani, Elias Zintzaras

Open access · diamondAbstract read
In one paragraph

Article in Therapeutic advances in ophthalmology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Observational
  4. Review
  5. Article
  6. Review
  7. 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

9 authors at 5 institutions in 3 countries.

Panagiotis DervenisLaboratory of Biomathematics, School of Medicine, University of Thessaly, Larissis 33, Tirnavos, 40100, Greece.ORCID https://orcid.org/0000-0002-9303-2161
Nikolaos DervenisSt Paul's Eye Unit, Royal Liverpool University Hospital, Liverpool, UK.ORCID https://orcid.org/0000-0002-7269-2785
David SteelSunderland Eye Infirmary, Sunderland, UK.
Teresa SandinhaSt Paul's Eye Unit, Royal Liverpool University Hospital, Liverpool, UK.
Paris TranosOphthalmica Eye Institute, Thessaloniki, Greece.
Panagiotis VasilakisGeneral Hospital of Trikala, Trikala, Greece.
Ioannis LiampasDepartment of Neurology, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece.
Chrysoula DoxaniLaboratory of Biomathematics, School of Medicine, University of Thessaly, Larissa, Greece.
Elias ZintzarasInstitute for Clinical Research and Health Policy Studies, Center for Clinical Evidence Synthesis, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA.
University of Thessaly · GRUniversity of Liverpool · GBAthens Eye Hospital · GRSunderland Eye Infirmary · GBTufts University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDiabetic retinopathy is a leading cause of visual loss in the working population. Pars plana vitrectomy has become the mainstream treatment option for severe proliferative diabetic retinopathy (PDR) associated with significant vitreous haemorrhage and/or tractional retinal detachment. Despite the advances in surgical equipment, diabetic vitrectomy remains a challenging operation, requiring advanced microsurgical skills, especially in the presence of tractional retinal detachment. Preoperative intravitreal bevacizumab has been widely employed as an adjuvant to ease surgical difficulty and improve postoperative prognosis.Aims: This study aims to assess the effectiveness of preoperative intravitreal bevacizumab in reducing intraoperative complications and improving postoperative outcomes in patients undergoing vitrectomy for the complications of PDR.

methodsA literature search was conducted using the PubMed, Cochrane, and ClinicalTrials.gov databases to identify all related studies published before 31/10/2020. Prespecified outcome measures were operation time, intraoperative iatrogenic retinal breaks, best-corrected visual acuity in the last follow-up visit, the presence of any postoperative vitreous haemorrhage and the need to re-operate. Evidence synthesis was performed using Fixed or Random Effects models, depending on the heterogeneity of the included studies. Heterogeneity was assessed using Q-statistic and I

resultsThirteen randomized control trials, with a total of 688 eyes were included in this review. Comparison of the intraoperative data showed that bevacizumab reduced operation time (

conclusionPreoperative administration of bevacizumab is effective in reducing intraoperative complications and improving the postoperative prognosis of diabetic vitrectomy.

Indexed as

bevacizumabdiabetic retinopathysystematic reviewvitrectomy

Identifiers

PMID34901749
PMCPMC8655445
OpenAlexW4200273559

What OpenQuestion holds

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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.