Evidence map›Paper›PMID 33789617›Full record

ArticleBMC ophthalmology2021

Panretinal photocoagulation after or prior to intravitreal conbercept injection for diabetic macular edema: a retrospective study.

Wei Zhang, Guiyang Zhao, Weijie Fan, Taihong Zhao

Erratum issuedAbstract read
In one paragraph

Article in BMC ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Wei ZhangDepartment of Ophthalmology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Rd, Nanjing, 210006, China.
Guiyang ZhaoDepartment of Ophthalmology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Rd, Nanjing, 210006, China.
Weijie FanDepartment of Ophthalmology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Rd, Nanjing, 210006, China.
Taihong ZhaoDepartment of Ophthalmology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Rd, Nanjing, 210006, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPanretinal photocoagulation treatment (PRP) have been known as a standard treatment for proliferative diabetic retinopathy (PDR) or severe nonproliferative diabetic retinopathy (sNPDR). However, there is no consensus on when PRP should be administrated if anti-VEGF treatment is needed for the concurrent diabetic macular edema (DME). This study is to evaluate the difference between two groups of PRP prior to, or after intravitreal conbercept (IVC) for patients with PDR or sNPDR combined with DME.

methodsThis was a retrospective study. Fifty-eight eyes with DME secondary to PDR or sNPDR were divided into two groups; the PRP after (PRP-after group), or prior to (PRP-prior group), IVC. Changes in number of IVC injections, best corrected visual acuity (BCVA), and central subfield macular thickness (CSMT) were compared after 4 weeks, 12 weeks, 1 year, and 2 years from the first IVC injection.

resultsThe mean number of injections in PRP-after group was 4.8 (1 year) and 6.4 (2 year), lower than 6.4 (1 year) and 8.5 (2 year) in PRP-prior group (both p = 0.002). There was no significant difference in change in BCVA and CSMT between two groups after each follow-up.

conclusionPRP after IVC requires less injections but also yields similar visual and anatomic outcome comparing with PRP prior to IVC in patients with diabetic retinopathy combined with DME.

Indexed as

Diabetes MellitusDiabetic RetinopathyMacular EdemaAngiogenesis InhibitorsHumansIntravitreal InjectionsLaser CoagulationRanibizumabRecombinant Fusion ProteinsRetrospective StudiesTomography, Optical CoherenceVisual AcuityAngiogenesis InhibitorsKH902 fusion proteinRanibizumabRecombinant Fusion ProteinsAnti-VEGFConberceptDiabetic macular edemaDiabetic retinopathyOptical coherence tomographyPanretinal photocoagulationVisual acuity

Identifiers

PMID33789617
PMCPMC8015169

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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.