Cited by 139Glaucoma and retinal disordersCorneal surgery and disordersElasticity and Material Modeling

Optic nerve head biomechanics in aging and disease

Open access
Downs, J. Crawford·2015·Experimental Eye Research

Abstract

This nontechnical review is focused upon educating the reader on optic nerve head biomechanics in both aging and disease along two main themes: what is known about how mechanical forces and the resulting deformations are distributed in the posterior pole and ONH (biomechanics) and what is known about how the living system responds to those deformations (mechanobiology). We focus on how ONH responds to IOP elevations as a structural system, insofar as the acute mechanical response of the lamina cribrosa is confounded with the responses of the peripapillary sclera, prelaminar neural tissues, and retrolaminar optic nerve. We discuss the biomechanical basis for IOP-driven changes in connective tissues, blood flow, and cellular responses. We use glaucoma as the primary framework to present the important aspects of ONH biomechanics in aging and disease, as ONH biomechanics, aging, and the posterior pole extracellular matrix (ECM) are thought to be centrally involved in glaucoma susceptibility, onset and progression.

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Crossref · 10.1016/j.exer.2015.02.011

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  • Old mice develop opaque lenses and lose retinal ganglion cells in the innermost retinal layer.

    “Old mice develop opaque lenses and lose retinal ganglion cells (RGCs) in the innermost retinal layer (Calkins, 2013; Downs, 2015; Samuel et al., 2011; Wolf et al., 2000) (Figure 7J).”

    From Loss of epigenetic information as a cause of mammalian aging (2023) · cites this paper as Downs, 2015

    Section 3.A (Aging; page unavailable) discusses retinal ganglion cell loss in an experimental mouse model of glaucoma. It does not say that aging itself causes this loss in mice, and the passages found on lens opacity do not support the claim about opaque lenses. (LLM, conf=0.82)

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Research works printed but not linked: 2

  1. Cioffi GA Van Buskirk EM 1996 Vasculature of the anterior optic nerve and peripapillary choroid The Glaucomas Ritch R Shields MB Krupin Mosby T Louis St Basic Sciences 177 197
  2. Sigal IA Roberts MD Girard MJA Burgoyne CF Downs JC 2010 Chapter 20: Biomechanical Changes of the Optic Disc Ocular Disease: Mechanisms and Management Levin LA Albert DM London Elsevier 153 164

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Authors
Downs, J. C.
Affiliations
University of Alabama at Birmingham (US)
Corresponding author
Downs, J. Crawford
Venue
Experimental Eye Research
Publisher
Elsevier BV
Published
2015-04
Volume
133
Pages
19-29
ISSN
0014-4835 (ISSN-L)
OpenAlex
W2121962174
Cited by
139
References
106
Citations by year
2026: 4 · 2025: 7 · 2024: 12 · 2023: 8 · 2022: 19 · 2021: 16 · 2020: 16 · 2019: 17 · 2018: 11 · 2017: 13 · 2016: 13 · 2015: 3
FWCI
2.47
Type
journal article
Language
en
Open access
Locations
  • Experimental Eye Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
NIH (R01 EY-018926)
Topics
  • Health Sciences › Medicine › Ophthalmology › Glaucoma and retinal disorders
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Corneal surgery and disorders
  • Physical Sciences › Engineering › Biomedical Engineering › Elasticity and Material Modeling
Keywords
optic nerve head biomechanics, aging, glaucoma, intraocular pressure, lamina cribrosa, peripapillary sclera, extracellular matrix, mechanobiology, connective tissue response, blood flow, optic nerve head
MeSH terms
Aging, Biomechanical Phenomena, Computer Simulation, Humans, Models, Biological, Optic Disk, Optic Nerve Diseases, Finite Element Analysis

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