ArticleExperimental eye research2021
In vivo estimation of murine iris stiffness using finite element modeling.
Article in Experimental eye research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 14 citations in OpenAlex.
- Experimental Assessment of Iris Water Content and Sex Differences in Mature Rabbits.bioRxiv : the preprint server for biology · 2026Article
- Assessment of iris pigment epithelium depolarization and associated factors using polarization-sensitive anterior segment optical coherence tomography.International ophthalmology · 2025Article
- A Histomorphometric and Computational Investigation of the Stabilizing Role of Pectinate Ligaments in the Aqueous Outflow Pathway.Journal of biomechanical engineering · 2024Article
- Aging and intraocular pressure homeostasis in mice.Aging cell · 2024Article
- A Histomorphometric and Computational Investigation of the Stabilizing Role of Pectinate Ligaments in the Aqueous Outflow Pathway.bioRxiv : the preprint server for biology · 2024Article
- Changes in Iris Stiffness and Permeability in Primary Angle Closure Glaucoma.Investigative ophthalmology & visual science · 2021Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
The iris plays an important role in certain types of glaucoma, including primary angle-closure glaucoma and pigmentary glaucoma. Iris mechanics are also important in influencing trabecular meshwork deformation in response to intraocular pressure changes in some animal species. Although mice are widely used to study ocular disease, including glaucoma, the in vivo biomechanical properties of the murine iris are unknown. Thus, the primary objective of this study was to estimate murine iris biomechanical stiffness. We used optical coherence tomography (OCT) images of the anterior segment of living mice (n = 13, age = 7.3 ± 3.2 [mean ± SD] months) at sequentially increasing IOP levels, observing IOP-dependent iris deformations. We then used an inverse finite element model to predict iris deformations under the same conditions, estimating iris stiffness by maximizing agreement between OCT data and numerical simulations. Our results show an in vivo murine iris stiffness of 96.1 ± 54.7 kPa (mean ± SD), which did not correlate with age but was dependent on gender. Our results further showed strong evidence of reverse pupillary block, with mean posterior chamber pressure remaining at approximately 12 mmHg even as anterior chamber pressure was set to much higher levels. Our approach to monitoring iris stiffness in vivo is applicable to study potential changes of iris stiffness in various pathophysiological conditions and thus has significant potential for clinical care of ocular disease involving iris biomechanics.
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