Evidence map›Paper›PMID 33213408›Full record

ArticleBMC ophthalmology2020

Effect of biomechanical properties on myopia: a study of new corneal biomechanical parameters.

Fang Han, Mengdi Li, Pinghui Wei, Jiaonan Ma, Vishal Jhanji, Yan Wang

Open access · goldAbstract read
In one paragraph

Article in BMC ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
3.0field-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

28 citing papers in PubMed, 43 citations in OpenAlex.

  1. Review
  2. Article
  3. Short-term digital ocular massage may weaken corneal biomechanics.Frontiers in bioengineering and biotechnology · 2025
    Article
  4. Article
  5. Article
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  7. Refractive associations with corneal biomechanical properties among young adults: a population-based Corvis ST study.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Article
  8. Article
  9. Article
  10. Comparisons of the protein expressions between high myopia and moderate myopia on the anterior corneal stroma in human.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
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  17. Effect of prostaglandin analogues on the biomechanical corneal properties in patients with open-angle glaucoma and ocular hypertension measured with dynamic scheimpflug analyzer.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2022
    Observational
  18. Review
  19. Article
  20. Unraveling the mechanobiology of cornea: From bench side to the clinic.Frontiers in bioengineering and biotechnology · 2022
    Review
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

6 authors at 5 institutions in 2 countries.

Fang HanClinical College of Ophthalmology, Tianjin Medical University, No.4, Gansu Road, Heping District, Tianjin, 300020, China.
Mengdi LiClinical College of Ophthalmology, Tianjin Medical University, No.4, Gansu Road, Heping District, Tianjin, 300020, China.
Pinghui WeiClinical College of Ophthalmology, Tianjin Medical University, No.4, Gansu Road, Heping District, Tianjin, 300020, China.
Jiaonan MaClinical College of Ophthalmology, Tianjin Medical University, No.4, Gansu Road, Heping District, Tianjin, 300020, China.
Vishal JhanjiUPMC Eye Center, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
Yan WangClinical College of Ophthalmology, Tianjin Medical University, No.4, Gansu Road, Heping District, Tianjin, 300020, China. wangyan7143@vip.sina.com.ORCID http://orcid.org/0000-0002-1257-6635
Tianjin Medical University · CNKunming University of Science and Technology · CNNankai University · CNTianjin Medical University Eye Hospital · CNUniversity of Pittsburgh Medical Center · US

Funding

National Natural Science Foundation of China (No.81670884, No.81873684)the Science and Technology Plan sponsored by Yunnan Provincial Health Commission in Science and Technology of Yunnan Province (CN) (No.2018NS0274)Yunnan Provincial Science and Technology Department No.2017FE468(-115
6 · The paper itself

Abstract

backgroundTo assess the corneal stress-strain index (SSI), which is a marker for material stiffness and corneal biomechanical parameters, in myopic eyes.

methodsA total of 1054 myopic patients were included in this study. Corneal visualisation Scheimpflug technology was used to measure the SSI. Corneal biomechanics were assessed using the first and second applanation times (A1-and A2-times); maximum deflection amplitude (DefAmax); deflection area (HCDefArea); the highest concavity peak distance (HC-PD), time (HC-time), and deflection amplitude (HC-DefA); integrated radius (IR); whole eye movement (WEM); stiffness parameter (SP-A1;, biomechanically corrected intraocular pressure (BIOP); and Corvis biomechanical index (CBI). Scheimpflug tomography was used to obtain the mean keratometery (Km) and central corneal thickness (CCT). According to the spherical equivalent (SE) (low myopia: SE ≥ - 3.00D and high myopia: SE ≤ - 6.00D.), the suitable patients were divided into two groups.

resultsThe mean SSI value was 0.854 ± 0.004. The SSI had a positive correlation with A1-time ((r = 0.272), HC-time (r = 0.218), WEM (r = 0.288), SP-A1 (r = 0.316), CBI (r = 0.199), CCT (r = 0.125), bIOP (r = 0.230), and SE (r = 0.313) (all p-values<0.01). The SSI had a negative correlation with HCDefA (r = - 0.721), HCDefArea (r = - 0.665), HC-PD(r = - 0.597), IR (r = - 0.555), DefAmax (r = - 0.564), and Km (r = - 0.103) (all p-values<0.01). There were significant differences in SSI (t = 8.960, p<0.01) and IR (t = - 3.509, p<0.01) between the low and high myopia groups.

conclusionsIn different grades of myopia, the SSI values were lower in eyes with higher SEs. It indicates that the mechanical strength of the cornea may be compromised in high myopia. The SSI was positively correlated with the spherical equivalent, and it may provide a new way to study the mechanism of myopia.

Indexed as

CorneaMyopiaBiomechanical PhenomenaHumansIntraocular PressureTonometry, OcularCorneal biomechanicsCorneal stress-strain indexMyopia

Identifiers

PMID33213408
PMCPMC7678063
OpenAlexW3101846662

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.