Summary
Degeneration of intrinsically photosensitive retinal ganglion cells (ipRGCs), as observed in glaucoma and optic neuropathy patients, disrupts circadian rhythm entrainment, with practical implications for lighting design in clinical and elder care settings. Understanding ipRGC loss can inform how lighting interventions may need to be intensified or spectrally adjusted for visually impaired populations to maintain biological clock function.
Key Findings
- Degeneration of M1-type ipRGCs observed in human glaucoma patients is associated with dysregulation of circadian rhythmicity.
- Optic neuropathy patients also show ipRGC loss linked to circadian disruption, suggesting a need for compensatory lighting strategies in affected populations.
Categories
The Science of Light: Discusses ipRGC biology and its role in circadian rhythm regulation via melanopsin-containing retinal ganglion cells.
Sleep & Circadian Health: Addresses circadian rhythm dysregulation linked to degeneration of photoreceptive cells involved in biological clock entrainment.
Eye Health & Vision: Connects glaucoma and optic neuropathy to loss of ipRGCs, with downstream effects on circadian rhythmicity.
Author(s)
V Zaikina
Related Publications
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
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- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- The two‐process model of sleep regulation: a reappraisal
- Melanopsin is required for non-image-forming photic responses in blind mice
- Strange vision: ganglion cells as circadian photoreceptors
Eye Health & Vision
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Genetic reactivation of cone photoreceptors restores visual responses in retinitis pigmentosa
- Melanopsin and rod–cone photoreceptors play different roles in mediating pupillary light responses during exposure to continuous light in humans
- Characteristic patterns of dendritic remodeling in early-stage glaucoma: evidence from genetically identified retinal ganglion cell types
- Intrinsically photosensitive melanopsin retinal ganglion cell contributions to the pupillary light reflex and circadian rhythm