Retinal Blood Flow
Retinal Blood Flow - Related Videos
10:16
Intravital Video Microscopy Measurements of Retinal Blood Flow in Mice
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Cited by 14 •
2013
Intravital microscopy can be used in animals to visualize and measure retinal vascular diameters, bloodstream velocities, and total retinal blood flow.
03:38
Developing a Cerebral Blood Flow Atlas for Blood Flow Mapping
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2025
Source: Tan, Z., et al., Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling. J. Vis. Exp. (2024).This video demonstrates the method to construct a cerebral blood flow atlas by integrating magnetic resonance imaging or MRI-arterial spin labeling data with segmented brain regions, visualizing blood flow patterns, and quantifying flow levels across functional areas.
09:33
An Acute Retinal Model for Evaluating Blood Retinal Barrier Breach and Potential Drugs for Treatment
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Cited by 3 •
2016
A low-cost, easy-to-use and powerful system is established to evaluate potential treatments that could ameliorate blood retinal barrier breach induced by histamine. Blood vessel leakage, Müller cell activation and the continuity of neuronal processes are utilized to assess the damage response and its reversal with a potential drug, lipoxin A4.
01:29
Blood Flow
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2025
Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow. Slow...
11:01
Isolation of Primary Murine Retinal Ganglion Cells (RGCs) by Flow Cytometry
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Cited by 19 •
2017
Millions of people suffer from retinal degenerative diseases that result in irreversible blindness. A common element of many of these diseases is the loss of retinal ganglion cells (RGCs). This detailed protocol describes the isolation of primary murine RGCs by positive and negative selection with flow cytometry.
FAQs
Perfusion pressure provides the driving force for blood movement, while vascular resistance limits or facilitates that movement within the retinal vascular network. Changes in either factor can alter the amount of blood reaching retinal tissue. Considering both variables helps researchers interpret whether an observed flow change reflects pressure conditions, resistance changes, or their combined effect.
Autoregulation helps the retina adjust to changing physiological conditions by modifying vessel diameter. These local responses support a closer match between blood delivery and retinal metabolic requirements rather than allowing flow to vary passively with every pressure change. Studying this control system can reveal impaired vascular function before substantial tissue or visual consequences become evident.
The retina requires a regulated supply of oxygen and nutrients to sustain visual function. When metabolic demand changes, local vascular responses help adjust delivery accordingly. A mismatch between demand and supply can indicate disturbed vascular regulation, making metabolic-flow relationships important when investigating retinal microvascular dysfunction and mechanisms that may threaten retinal tissue.
Changes in retinal blood flow can serve as indicators of vascular dysfunction associated with diabetic retinopathy, glaucoma, and retinal vascular disease. Comparing flow patterns across disease states or stages may help researchers examine microvascular involvement and disease progression. This information also supports investigation of whether interventions can preserve retinal tissue and visual function.
Measurements can provide information about retinal vascular function and help identify changes in blood supply that may accompany disease. They can support assessment of microvascular dysfunction, evaluation of progression, and investigation of treatment effects. Used alongside the relevant disease context, flow data may contribute to earlier recognition of retinal vascular abnormalities.
Assessment is particularly relevant when researchers or clinicians are studying diabetic retinopathy, glaucoma, or other retinal vascular disease. It can help characterize vascular changes, monitor how disease-related abnormalities develop, and evaluate approaches intended to protect retinal tissue. In this way, blood-flow measurements connect vascular physiology with visual-function preservation and treatment development.