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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 central retinal vein runs through the centre of the optic nerve (alongside the central retinal artery) surrounded by a fibrous connective tissue envelope. [2] It leaves the optic nerve 10 mm from the eyeball [citation needed] along with the central retinal artery, also exiting the meningeal envelope of the optic nerve.
The goal of the treatment is to fix the cause of the hemorrhage as quickly as possible. Retinal tears are closed by laser treatment or cryotherapy, and detached retinas are reattached surgically. [6] Even after treatment, it can take months for the body to clear all of the blood from the vitreous. [2]
Ocular ischemic syndrome is the constellation of ocular signs and symptoms secondary to severe, chronic arterial hypoperfusion to the eye. [1] Amaurosis fugax is a form of acute vision loss caused by reduced blood flow to the eye; it may be a warning sign of an impending stroke, as both stroke and retinal artery occlusion can be caused by thromboembolism due to atherosclerosis elsewhere in the ...
Generally, diseases outlined within the ICD-10 codes H30-H36 within Chapter VII: Diseases of the eye, adnexa should be included in this category. Wikimedia Commons has media related to Disorders of choroid and retina .
Cotton wool spots are commonly caused by changes to the retina secondary to diabetes, hypertension, or blockages to blood vessels to the retina, such as central retinal vein occlusion. [ 5 ] [ 8 ] While at one point believed to have been the result of nerve damage in the retina, interruptions to axoplasmic flow to these nerves may result from ...
Other conditions causing rubeosis iridis include central retinal vein occlusion, [2] ocular ischemic syndrome, [3] and chronic retinal detachment. Pathophysiology
The optic disc is where the axons from the retinal ganglion cells collect into the optic nerve. The optic nerve is the bundle of axons that carry the visual signals from the eye to the brain. This optic nerve must penetrate through the wall of the eye, and the hole to accommodate this is usually 20-30% larger than the nerve diameter.