Effects of retinal ganglion cell loss on magno-, parvo-, koniocellular pathways in the lateral geniculate nucleus and visual cortex in glaucoma
Abstract
Glaucoma is a leading cause of world blindness, and retinal ganglion cell death is its pathological hallmark. There is accumulating evidence that glaucomatous damage extends from retinal ganglion cells to vision centers in the brain. In an experimental primate model of unilateral glaucoma, degenerative changes are observed in magnocellular, parvocellular, and koniocellular pathways in the lateral geniculate nucleus, and these changes are presented in relation to intraocular pressure and the severity of optic nerve damage. Neuropathological findings are also present in lateral geniculate nucleus layers driven by the unaffected fellow eye. Finally, there is information on changes in the visual cortex in relation to varying degrees of retinal ganglion cell loss. The implications of these findings for refining concepts regarding the pathobiology of progression, and the detection and treatment of glaucoma, are discussed.
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Neurodegenerative lesions have been detected in the intracranial optic nerve, lateral geniculate nucleus, and visual cortex in glaucoma, suggesting that glaucoma could be grouped as a neurodegenerative disease.
“Recently, neurodegenerative lesions have been detected in the intracranial optic nerve, the lateral geniculate nucleus, and the visual cortex (Gupta et al., 2006, 2007), suggesting that this pathology could be grouped as a neurodegenerative disease (Yucel et al., 2003).”
From The role of microglia in retinal neurodegeneration: Alzheimer’s disease, parkinson, and glaucoma. (2017) · cites this paper as Yucel et al., 2003
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- Authors
- Yücel, Y.
- Affiliations
- St. Michael's Hospital (CA)
- Corresponding author
- Yücel, Y
- Venue
- Progress in Retinal and Eye Research
- Publisher
- Elsevier BV
- Published
- 2003-07
- Volume
- 22
- Issue
- 4
- Pages
- 465-481
- ISSN
- 1350-9462 (ISSN-L)
- OpenAlex
- W1964207930
- Cited by
- 384
- References
- 90
- Citations by year
- 2026: 3 · 2025: 21 · 2024: 13 · 2023: 9 · 2022: 12 · 2021: 19 · 2020: 17 · 2019: 18 · 2018: 17 · 2017: 17 · 2016: 20 · 2015: 33 · 2014: 14 · 2013: 20 · 2012: 25
- FWCI
- 12.36
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Progress in Retinal and Eye Research (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Eye Institute (R01EY002698, EY02698)
- Topics
- Health Sciences › Medicine › Ophthalmology › Glaucoma and retinal disorders
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Health Sciences › Medicine › Ophthalmology › Drug-Induced Ocular Toxicity
- Keywords
- glaucoma, retinal ganglion cell death, lateral geniculate nucleus, visual cortex, magnocellular pathway, parvocellular pathway, koniocellular pathway, intraocular pressure, optic nerve injury
- MeSH terms
- Animals, Geniculate Bodies, Glaucoma, Humans, Nerve Degeneration, Optic Nerve, Retinal Ganglion Cells, Visual Cortex, Visual Pathways, Cell Death
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