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Branch retinal vein occlusion revealed by laser Doppler imaging through flow alteration in the upper right branch artery. The diagnosis of branch retinal vein occlusion is made clinically by finding retinal hemorrhages in the distribution of an obstructed retinal vein. Fluorescein angiography is a helpful adjunct. Findings include delayed ...
Signs of damage to the retina caused by hypertension include: [citation needed]. Laser Doppler imaging of the papilla of a patient with hypertension. Arteriolar changes, such as generalized arteriolar narrowing, focal arteriolar narrowing, arteriovenous nicking, changes in the arteriolar wall (arteriosclerosis) and abnormalities at points where arterioles and venules cross.
Recently, central serous chorioretinopathy has been understood to be part of the pachychoroid spectrum. [5] [6] In pachychoroid spectrum disorders, of which CSR represents stage II, the choroid, the highly vascularized layer below the retina, is thickened and congested with increased blood vessel diameter, especially in the deep choroid (the so-called Haller's layer).
The central retinal vein is the venous equivalent of the central retinal artery and both may become occluded. [1] Since the central retinal artery and vein are the sole source of blood supply and drainage for the retina , such occlusion can lead to severe damage to the retina and blindness, due to ischemia (restriction in blood supply) and ...
The vessel walls are weak and leak blood plasma and lipid within and underneath the retina. This leakage can lead to exudative retinal detachment, also known as exudative retinopathy in this context. The detachment typically has a yellowish tint because the fluid under the retina contains lipid. These findings mimic Coats disease. [9]
The ophthalmic artery branches off into the central retinal artery which travels with the optic nerve until it enters the eye. [8] This central retinal artery provides nutrients to the retina of the eye, more specifically the inner retina and the surface of the optic nerve. [8] Variations, such as branch retinal artery occlusion, can also occur ...
In early stage of lipaemia retinalis, creamy-white discoloration of retinal blood vessels occurs and in extreme cases the fundus become salmon red colour. [2] Retinal changes occur in the peripheral vessels gradually progress to entire fundus. [3] Symptoms are caused by an increase in the level of chylomicron in the retinal circulation. [4]
Retinal vessel dynamics have the potential to serve as a tool for the assessment of risks in other organs since they are thought to reflect the general status of the microvasculature (i.e. the smallest vessels in the human body). The value of the examination with the Retinal Vessel Analyzer has been documented in a number of recent studies.