ArticleComputer methods and programs in biomedicine2022
Finite element modeling of the complex anisotropic mechanical behavior of the human sclera and pia mater.
Article in Computer methods and programs in biomedicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 22 citations in OpenAlex.
- Finite Element Analysis of Extraocular Muscle and Adipose-Dominant Pathogenesis in Thyroid Eye Disease With Clinical Implications.Translational vision science & technology · 2026Article
- Differential Cytoskeletal Control of Cell-Collagen Mechanics in High- and Low-Flow Glaucomatous Trabecular Meshwork Cells.ACS applied materials & interfaces · 2026Article
- Impact of material property modifications on optical performance: a multidisciplinary study in the human eye under different intraocular pressures.Biomedical optics express · 2025Article
- Finite Element Model of the Effect of Optic Nerve Sheath Anisotropy on Ocular Loading During Horizontal Duction.Bioengineering (Basel, Switzerland) · 2025Article
- Comparing continuum and direct fiber models of soft tissues. An ocular biomechanics example reveals that continuum models may artificially disrupt the strains at both the tissue and fiber levels.bioRxiv : the preprint server for biology · 2024Article
- Fibrous finite element modeling of the optic nerve head region.Acta biomaterialia · 2024Article
- Segmental biomechanics of the normal and glaucomatous human aqueous outflow pathway.Acta biomaterialia · 2024Article
- Developing an experimental-computational workflow to study the biomechanics of the human conventional aqueous outflow pathway.Acta biomaterialia · 2023Article
- Morphological and biomechanical analyses of the human healthy and glaucomatous aqueous outflow pathway: Imaging-to-modeling.Computer methods and programs in biomedicine · 2023Article
- Article
- Modeling the Endothelial Glycocalyx Layer in the Human Conventional Aqueous Outflow Pathway.Cells · 2022Article
- The Effect of Intraocular Pressure Load Boundary on the Biomechanics of the Human Conventional Aqueous Outflow Pathway.Bioengineering (Basel, Switzerland) · 2022Article
- Viscoelastic Biomechanical Properties of the Conventional Aqueous Outflow Pathway Tissues in Healthy and Glaucoma Human Eyes.Journal of clinical medicine · 2022Article
- Relative Contributions of Intraocular and Cerebrospinal Fluid Pressures to the Biomechanics of the Lamina Cribrosa and Laminar Neural Tissues.Investigative ophthalmology & visual science · 2022Article
- Biomechanics of human trabecular meshwork in healthy and glaucoma eyes via dynamic Schlemm's canal pressurization.Computer methods and programs in biomedicine · 2022Article
- Modeling the biomechanics of the conventional aqueous outflow pathway microstructure in the human eye.Computer methods and programs in biomedicine · 2022Article
- Ocular biomechanics during improvised explosive device blast: A computational study using eye-specific models.Injury · 2022Article
- Viscoelastic Modeling of Optic Nerve Head Biomechanics: Effects of Intraocular and Cerebrospinal Fluid Pressure.Biocybernetics and biomedical engineeringArticle
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
BACKGROUND AND
objectiveAccurate finite element (FE) simulation of the optic nerve head (ONH) depends on accurate mechanical properties of the load-bearing tissues. The peripapillary sclera in the ONH exhibits a depth-dependent, anisotropic, heterogeneous collagen fiber distribution. This study proposes a novel cable-in-solid modeling approach that mimics heterogeneous anisotropic collagen fiber distribution, validates the approach against published experimental biaxial tensile tests of scleral patches, and demonstrates its effectiveness in a complex model of the posterior human eye and ONH.
methodsA computational pipeline was developed that defines control points in the sclera and pia mater, distributes the depth-dependent circumferential, radial, and isotropic cable elements in the sclera and pia in a pattern that mimics collagen fiber orientation, and couples the cable elements and solid matrix using a mesh-free penalty-based cable-in-solid algorithm. A parameter study was performed on a model of a human scleral patch subjected to biaxial deformation, and computational results were matched to published experimental data. The new approach was incorporated into a previously published eye-specific model to test the method; results were then interpreted in relation to the collagen fibers' (cable elements) role in the resultant ONH deformations, stresses, and strains.
resultsResults show that the cable-in-solid approach can mimic the full range of scleral mechanical behavior measured experimentally. Disregarding the collagen fibers/cable elements in the posterior eye model resulted in ∼20-60% greater tensile and shear stresses and strains, and ∼30% larger posterior deformations in the lamina cribrosa and peripapillary sclera.
conclusionsThe cable-in-solid approach can easily be implemented into commercial FE packages to simulate the heterogeneous and anisotropic mechanical properties of collagenous biological tissues.
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