Evidence map›Paper›PMID 35501407›Full record

SynthesisMolecular psychiatry2022

Retinal layers and associated clinical factors in schizophrenia spectrum disorders: a systematic review and meta-analysis.

Hiroshi Komatsu, Goh Onoguchi, Stefan Jerotic, Nobuhisa Kanahara, Yoshihisa Kakuto, Takashi Ono, Shunichi Funakoshi, Takeshi Yabana, Toru Nakazawa, Hiroaki Tomita

Erratum issuedAbstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Molecular psychiatry, 2022. 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 30 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 3 pooled it
9.6field-weighted citation impact, top 1% 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

30 citing papers in PubMed, 3 syntheses or guidelines pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 2 countries.

Hiroshi KomatsuDepartment of Psychiatry, Tohoku University Hospital, Sendai, Japan. hkomatsu1019@gmail.com.
Goh OnoguchiDepartment of Psychiatry, Graduate School of Medicine, Tohoku University, Sendai, Japan.
Stefan JeroticClinic for Psychiatry, University Clinical Centre of Serbia, Belgrade, Serbia.
Nobuhisa KanaharaDepartment of Psychiatry, Chiba University Graduate School of Medicine, Chiba, Japan.ORCID http://orcid.org/0000-0001-8550-8003
Yoshihisa KakutoMiyagi Psychiatric Center, Natori, Japan.
Takashi OnoMiyagi Psychiatric Center, Natori, Japan.
Shunichi FunakoshiMiyagi Psychiatric Center, Natori, Japan.
Takeshi YabanaDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Toru NakazawaDepartment of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Hiroaki TomitaDepartment of Psychiatry, Tohoku University Hospital, Sendai, Japan.
Tohoku University · JPChiba University · JPMiyagi Prefectural Hospital Organization · JPUniversity of Belgrade · RS

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe retina shares structural and functional similarities with the brain. Furthermore, structural changes in the retina have been observed in patients with schizophrenia spectrum disorders (SSDs). This systematic review and meta-analysis investigated retinal abnormalities and their association with clinical factors for SSD.

methodsStudies related to retinal layers in SSD patients were retrieved from PubMed, Scopus, Web of Science, Cochrane Controlled Register of Trials, International Clinical Trials Registry Platform, and PSYNDEX databases from inception to March 31, 2021. We screened and assessed the eligibility of the identified studies. EZR ver.1.54 and the metafor package in R were used for the meta-analysis and a random-effects or fixed-effects model was used to report standardized mean differences (SMDs).

resultsTwenty-three studies (2079 eyes of patients and 1571 eyes of controls) were included in the systematic review and meta-analysis. The average peripapillary retinal nerve fiber layer (pRNFL) thickness, average macular thickness (MT), and macular ganglion cell layer-inner plexiform layer (GCL-IPL) thickness were significantly lower in patients than in controls (n = 14, 6, and 3, respectively; SMD = -0.33, -0.49, and -0.43, respectively). Patients also had significantly reduced macular volume (MV) compared to controls (n = 7; SMD = -0.53). The optic cup volume (OCV) was significantly larger in patients than in controls (n = 3; SMD = 0.28). The meta-regression analysis indicated an association between several clinical factors, such as duration of illness and the effect size of the pRNFL, macular GCL-IPL, MT, and MV.

conclusionThinning of the pRNFL, macular GCL-IPL, MT, and MV and enlargement of the OCV in SSD were observed. Retinal abnormalities may be applicable as state/trait markers in SSDs. The accumulated evidence was mainly cross-sectional and requires verification by longitudinal studies to characterize the relationship between OCT findings and clinical factors.

Indexed as

Nerve FibersSchizophreniaCross-Sectional StudiesHumansRetinaRetinal Ganglion CellsTomography, Optical Coherence

Identifiers

PMID35501407
OpenAlexW4225278888

What Socratic 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 Socratic graph.