Evidence map›Paper›PMID 33980205›Full record

ArticleBMC ophthalmology2021

Corneal nerve structure in patients with primary Sjögren's syndrome in China.

Fangting Li, Qin Zhang, Xin Ying, Jing He, Yuebo Jin, Huiwen Xu, Yaobin Cheng, Mingwei Zhao

Open access · goldAbstract 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. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
3.5field-weighted citation impact, top 7% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. CornealFrontiers in medicine · 2022
    Pooled it
  3. Which features best differentiate Sjögren's-related from non-Sjögren's-related dry eye disease?Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
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  12. CD4Proceedings of the National Academy of Sciences of the United States of America · 2024
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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

8 authors at 1 institution in 1 country.

Fangting Li *Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, 11 Xizhimen South Street, Beijing, 100044, Xicheng District, China.
Qin Zhang *Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, 11 Xizhimen South Street, Beijing, 100044, Xicheng District, China.
Xin YingDepartment of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, 11 Xizhimen South Street, Beijing, 100044, Xicheng District, China.
Jing HeDepartment of Rheumatology, Peking University People's Hospital, Beijing, China.
Yuebo JinDepartment of Rheumatology, Peking University People's Hospital, Beijing, China.
Huiwen XuDepartment of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China.
Yaobin ChengDepartment of Rheumatology, Peking University People's Hospital, Beijing, China.
Mingwei ZhaoDepartment of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, 11 Xizhimen South Street, Beijing, 100044, Xicheng District, China. zhaomingwei64@163.com.ORCID http://orcid.org/0000-0003-1370-6275
Peking University · CN

Funding

Peking University People's Hospital RDX2020-03
6 · The paper itself

Abstract

backgroundThe aim of this study was to evaluate the in vivo confocal microscopic morphology of corneal subbasal nerves and its relationship with clinical parameters in patients with primary Sjögren's syndrome in China.

methodsThis was a case control study of 22 dry eye disease (DED) patients with primary Sjögren's syndrome (pSS) and 20 control subjects with non-Sjögren dry eye disease (NSDE). Each patient underwent an evaluation of ocular surface disease using the tear film break-up time (TBUT), noninvasive tear film break-up time (NIKBUT), noninvasive tear meniscus height (NIKTMH), corneal staining (National Eye Institute scale, NEI), Schirmer I test, meibography, and corneal subbasal nerve analysis with in vivo confocal microscopy (IVCM). The right eye of each subject was included in this study.

resultsSS patients showed a shorter TBUT (P = 0.009) and Schirmer I test results (P = 0.028) than the NSDE group. However, there was no significant difference in NIKBUT between the two groups (P = 0.393). The nerve density of subbasal nerves, number of nerves and tortuosity of the SS group were significantly lower than those of the NSDE group (P = 0.001, P < 0.001 and P = 0.039, respectively). In the SS group, the mean nerve length was correlated with age and the Schirmer I test (r = - 0.519, P = 0.013 and r = 0.463, P = 0.035, respectively). Corneal staining was correlated with nerve density and the number of nerves (r = - 0.534, P = 0.013 and r = - 0.487, P = 0.025, respectively).

conclusionsSjögren syndrome dry eye (SSDE) patients have more severe clinical dry eye parameters than non-Sjögren dry eye disease (NSDE) patients. Compared with NSDE patients, we found that SSDE patients showed decreased corneal subbasal nerve density and numbers.

Indexed as

Dry Eye SyndromesSjogren's SyndromeCase-Control StudiesChinaCorneaHumansMicroscopy, ConfocalTearsCorneal nerveDry eye diseaseIn vivo confocal microscopy (IVCM)Sjögren’s syndrome

Identifiers

PMID33980205
PMCPMC8117565
OpenAlexW3160625587

What OpenQuestion holds

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LicenceCC BY
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.