Retinal Function
Retinal Function - Related Videos
07:19
Assessing Retinal Microglial Phagocytic Function In Vivo Using a Flow Cytometry-based Assay
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Cited by 4 •
2016
Microglial phagocytosis is critical for the maintenance of tissue homeostasis and inadequate phagocytic function has been implicated in pathology. However, assessing microglia function in vivo is technically challenging. We have developed a simple but robust technique for precisely monitoring and quantifying the phagocytic potential of microglia in a physiological setting.
09:17
Using Retinal Imaging to Study Dementia
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Cited by 19 •
2017
The retina shares prominent similarities with the brain and thus represents a unique window to study vasculature and neuronal structure in the brain non-invasively. This protocol describes a method to study dementia using retinal imaging techniques. This method can potentially aid in diagnosis and risk assessment of dementia.
02:54
Preparation of Mouse Retinal Cryosections to Assess Retinal Permeability to Adeno-Associated Virus
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2026
Source: Vacca, O., et al. Using Adeno-associated Virus as a Tool to Study Retinal Barriers in Disease. J. Vis. Exp. (2015)This video demonstrates the step-by-step procedure for preparing mouse retinal cryosections to visualize adeno-associated virus permeability across disrupted retinal barriers.
13:02
An Isolated Retinal Preparation to Record Light Response from Genetically Labeled Retinal Ganglion Cells
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Cited by 26 •
2011
This article provides a description of how to dissect and record from the isolated retinal preparation in mouse. In particular, we describe how to record light responses from a fluorescently labeled ganglion cell population and subsequently identify and analyze its morphology.
14:33
Morphometric Analyses of Retinal Sections
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Cited by 6 •
2012
This video demonstrates three types of morphometric analyses of the retina, which include measuring the inner nuclear layer thickness, quantifying the number of retinal ganglion cells (RGCs) and measuring the sizes of RGCs. The technique can offer a simple but scientific platform for morphometric analyses.
FAQs
Photoreceptors convert incoming photons into electrical changes that initiate retinal signaling. The resulting activity can support information about light intensity and color, while subsequent retinal processing contributes to contrast and movement analysis. This conversion is therefore an essential first stage linking the physical properties of light with neural representations used for vision.
Retinal circuits use photoreceptor, bipolar, horizontal, amacrine, and ganglion cells to refine signals rather than passing raw photoreceptor responses directly onward. Their circuit activity helps organize information about intensity, color, contrast, and movement before transmission through the optic nerve. This layered processing makes the retina an important site of sensory computation in neuroscience.
The optic nerve provides the transmission route by which processed retinal signals leave the eye and reach the brain. Because retinal circuits refine visual information before this output stage, the nerve carries signals that already reflect features such as intensity, color, contrast, and movement. Studying this connection helps relate retinal activity to broader brain-based visual processing.
Measurements of retinal responses provide evidence about how the retina processes visual signals and can help characterize changes associated with visual disorders. They also give researchers a way to evaluate retinal activity in studies of degeneration, neuroprotective treatments, visual prostheses, and strategies intended to restore sight. The measured responses connect cellular function with potential visual outcomes.
Researchers can use retinal response measurements to investigate how degeneration affects the signaling processes that support vision. These studies place cellular and circuit activity in the context of visual disorders and may help assess neuroprotective treatments. They also contribute to efforts to understand whether damaged visual pathways can be supported or whether sight-restoring strategies may be feasible.
Knowledge of retinal signaling is relevant because visual prostheses and other sight-restoration strategies must address the neural processing that normally supports vision. Retinal function research identifies the kinds of information handled within the eye, including intensity, color, contrast, and movement. This scientific context helps guide investigations into technologies and treatments intended to restore visual capability.