Evidence map›Paper›PMID 30651879›Full record

ArticleExperimental and therapeutic medicine2019

Efficacy of panretinal laser in ischemic central retinal vein occlusion: A systematic review.

Chengfang Li, Rongrong Wang, Guojun Liu, Zhen Ge, Dongdong Jin, Yao Ma, Guixiang Liu

Open access · diamondAbstract read
In one paragraph

Article in Experimental and therapeutic medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
0.4field-weighted citation impact, top 33% 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

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Observational
  3. 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

7 authors at 3 institutions in 1 country.

Chengfang LiDepartment of Ophthalmology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266200, P.R. China.
Rongrong WangDepartment of Ophthalmology, JiMo Traditional Chinese Medicine Hospital, Qingdao, Shandong 266200, P.R. China.
Guojun LiuDepartment of Ophthalmology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266200, P.R. China.
Zhen GeDepartment of Ophthalmology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266200, P.R. China.
Dongdong JinDepartment of Ophthalmology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266200, P.R. China.
Yao MaDepartment of Ophthalmology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, Shandong 266200, P.R. China.
Guixiang LiuDepartment of Ophthalmology, Affiliated Hospital of Qingdao University Medical College, Qingdao, Shandong 266000, P.R. China.
Qingdao University · CNAffiliated Hospital of Qingdao University · CNJimo District Qingdao Hospital of Traditional Chinese Medicine · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of the present systematic review was to assess the efficacy of laser therapy for ischemic central retinal vein occlusion (CRVO). Relevant studies were retrieved by searching the PubMed, Embase, Chinese Biomedical Literature Database and, Chinese Science and Technology Periodicals databases using a combination of key words, including 'central retinal vein obstruction', 'CRVO', 'laser' and 'panretinal photocoagulation'. The titles, abstracts and full texts were screened by two independent reviewers and studies were selected according to specific inclusion criteria. Data were extracted and the quality of each study was graded using the Grading of Recommendations, Assessment, Development and Evaluation or Methodological Index for Non-Randomized Studies (MINORS) criteria. A total of 1,187 abstracts were retrieved, and finally, 11 clinical studies were selected, including 534 cases of CRVO. Of these, 8 studies compared the efficacy of laser therapy with other treatments for CRVO, two studies compared the efficacy of laser therapy and drug treatment for CRVO and one study compared the efficacy of early laser therapy with standard laser therapy (regular examinations and laser therapy performed as soon as neovascularization was identified) for CRVO. Among them, the results of five studies demonstrated that panretinal photocoagulation (PRP) for the prevention of iris neovascularization and neovascular glaucoma is inefficient regarding the improvement of visual acuity. A total of 10 studies indicated that laser therapy achieved better outcomes in neovascularization of the retina, optic disc neovascularization and iris neovascularization, neovascular glaucoma, vitreous hemorrhage, changes in the visual field, macular edema, macular thickness and intraocular pressure. Of note, it was indicated that laser photocoagulation prevents the severe vascular complications of CRVO. In addition, in the eyes of patients receiving PRP for the treatment of ischemic CRVO, significant reductions in corneal sub-basal nerve plexus parameters and average peripapillary retinal nerve fiber layer thickness were observed. Furthermore, laser photocoagulation was able to increase retinal blood flow in eyes with ischemic CRVO.

Indexed as

central retinal vein occlusionlaserpanretinal photocoagulationsystematic review

Identifiers

PMID30651879
PMCPMC6307409
OpenAlexW2903030324

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.