Evidence map›Paper›PMID 32155090›Full record

ArticleCurrent eye research2020

Bilaminar Structure of the Human Optic Nerve Sheath.

Alan Le, Andrew Shin, Joseph Park, Vadims Poukens, Joseph L Demer

Open access · greenAbstract read
In one paragraph

Article in Current eye research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 29% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. Pooled it
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  5. Ocular changes as potential biomarkers for early diagnosis of Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
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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

5 authors at 2 institutions in 1 country.

Alan LeDepartment of Bioengineering, University of California , Los Angeles, California, USA.
Andrew ShinWellman Center for Photomedicine, Harvard Medical School and Massachusetts General Hospital , Boston, Massachusetts, USA.
Joseph ParkDepartment of Bioengineering, University of California , Los Angeles, California, USA.
Vadims PoukensDepartment of Ophthalmology and Stein Eye Institute, University of California , Los Angeles, California, USA.
Joseph L DemerDepartment of Ophthalmology and Stein Eye Institute, University of California , Los Angeles, California, USA.
University of California, Los Angeles · USMassachusetts General Hospital · US

Funding

Vision Research Core at UCLAP30EY000331 · NEI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Xian-Jie Yang · 1985 to 2026
$16.8M
BIOMECHANICAL ANALYSIS IN STRABISMUS SURGERYR01EY008313 · NEI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI JOSEPH Louis DEMER · 1991 to 2026
$15.0M
Vision Science Training ProgramT32EY007026 · NEI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Alapakkam P Sampath · 1985 to 2026
$5.7M
NEI NIH HHS P30 EY000331NEI NIH HHS R01 EY008313NEI NIH HHS T32 EY007026
6 · The paper itself

Abstract

PURPOSE/

aimWe aimed to characterize the connective tissue microanatomy, elastin abundance, and fiber orientation in the human optic nerve sheath, also known as the optic nerve dura mater, for correlation with its biomechanical properties. MATERIALS AND

methodsSeven whole human orbits aged 4-93 years, and five isolated human optic nerve sheaths aged 26-75 years were formalin fixed, paraffin embedded, coronally sectioned, stained by Masson trichrome and van Gieson's elastin methods, and analyzed quantitatively for elastin fiber abundance and orientation. Elastin area fraction was defined as area stained for elastin divided by total area.

resultsWhile unilaminar in children, the adult ON sheath exhibited distinct inner and outer layers. Collagen was denser and more compact in the inner layer. Elastin area fraction was significantly greater at 6.0 ± 0.4% (standard error of mean) in the inner than outer layer at 3.6 ± 0.4% (

conclusionsThe adult human optic nerve sheath is bilaminar, with each layer containing elastin fibers oriented in multiple directions consistent with isotropic properties. Differences in laminar elastin density and orientation may reflect greater tensile loading in the inner than in the outer layer.

Indexed as

AdultAgedAged, 80 and overBiomechanical PhenomenaChild, PreschoolDura MaterElastic TissueElastinHumansMiddle AgedOptic NerveElastinBiomechanicselastinoptic nerve duraoptic nerve sheath

Identifiers

PMID32155090
PMCPMC7286776
OpenAlexW3011329756

What OpenQuestion holds

Textmetadata
LicenceTDM
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.