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Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
Published on: March 12, 2016
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Intrinsically photosensitive retinal ganglion cells in glaucoma
Jingyi Gao1, Ignacio Provencio1,2,3, Xiaorong Liu1,2,3,4
1Department of Biology, University of Virginia, Charlottesville, VA, United States.
Frontiers in Cellular Neuroscience
|October 10, 2022
Summary
Glaucoma damages retinal ganglion cells (RGCs) in specific ways, affecting vision and non-visual functions. This review explores how type-specific RGC loss, particularly intrinsically photosensitive RGCs (ipRGCs), impacts behavior in glaucoma models and patients.
Area of Science:
- Ophthalmology
- Neuroscience
- Cell Biology
Background:
- Glaucoma, a leading cause of vision loss, affects over 70 million worldwide.
- Retinal ganglion cells (RGCs) are crucial for vision and exhibit diverse subtypes.
- RGCs, including intrinsically photosensitive RGCs (ipRGCs), degenerate in a type-specific manner in glaucoma.
Purpose of the Study:
- To review the type-specific degeneration of ipRGCs in glaucoma.
- To examine the associated behavioral changes in animal models and human patients.
- To highlight the impact of ipRGC circuit damage on non-visual disorders in glaucoma.
Main Methods:
- Review of existing literature on RGC degeneration in glaucoma models.
- Analysis of studies linking ipRGC survival to behavioral deficits.
- Examination of data from animal models and glaucoma patient cohorts.
Main Results:
- Glaucoma causes type-specific loss of RGCs, impacting both visual and non-visual functions.
- Intrinsically photosensitive RGCs (ipRGCs) are particularly vulnerable, affecting non-visual light responses.
- A link exists between ipRGC survival and behavioral deficits in mouse models of ocular hypertension.
Conclusions:
- Understanding type-specific ipRGC degeneration is key to addressing glaucoma-related non-visual impairments.
- Targeting ipRGC-based circuits may offer new therapeutic avenues for glaucoma patients.
- Further research is needed to fully elucidate the role of ipRGCs in glaucoma's multifaceted impact.
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