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Updated: Jul 13, 2025

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
Published on: March 12, 2016
Age- and glaucoma-induced changes to the ocular glymphatic system
Xiaowei Wang1, Christine Delle2, Weiguo Peng1
1Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark; Center for Translational Neuromedicine, University of Rochester Medical School, Elmwood Avenue 601, Rochester, NY 14642, USA.
Aging impairs ocular glymphatic fluid transport, affecting waste removal and light responses. Glaucoma, however, pathologically increases this transport, suggesting distinct therapeutic targets for optic nerve health.
Area of Science:
- Ophthalmology
- Neuroscience
- Fluid Dynamics
Background:
- The ocular glymphatic system facilitates waste removal along the optic nerve.
- Understanding its function is crucial for optic nerve health and diseases like glaucoma.
Purpose of the Study:
- To investigate the impact of aging and glaucoma on ocular glymphatic fluid transport.
- To compare the effects of aging and glaucoma on the optic nerve.
Main Methods:
- Infusion of tracers into the vitreous and cisterna magna of mice.
- Analysis of tracer distribution in optic nerves across different age groups and in a glaucoma model (DBA/2J).
- Assessment of pupillary light response and light-induced glymphatic flow.
Main Results:
- Aging globally impaired ocular glymphatic fluid transport and reduced light-induced responses.
- Glaucoma (DBA/2J model) showed a pathological increase in fluid transport to the anterior optic nerve.
- Aging and glaucoma exert fundamentally different effects on ocular glymphatic function.
Conclusions:
- Aging negatively impacts ocular glymphatic system function, mirroring brain glymphatic changes.
- Glaucoma presents a distinct pathological alteration in ocular glymphatic transport.
- Modulating glymphatic transport may offer novel therapeutic strategies for glaucoma.
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