2019年3月13日 · Eye strokes occur when blockages (occlusions) occur in arteries or veins in the retina, causing vision loss. The severity of vision loss depends on the extent and location of the occlusion (s) and loss of blood flow.

It is an obstruction of retinal blood flow that may be due to an embolus causing occlusion or thrombus formation, vasculitis causing retinal vasculature inflammation, traumatic vessel wall damage, or spasm. The lack of oxygen delivery to the retina during the blockage often results in severe vision loss in the area of ischemic retina.

2024年11月11日 · Having high blood pressure can damage arteries that carry blood in the eye. If a blood clot or cholesterol builds up and blocks blood flow in one or more of your retina’s arteries, it is called a retinal artery occlusion (RAO) .

A retinal artery occlusion (RAO) is a blockage in one or more of the arteries of your retina, a layer at the back of the eye where visual images are formed. The blockage is caused by a clot or occlusion in an artery or a build-up of cholesterol in an artery.

Central retinal artery occlusion is the blockage of blood to the retina of 1 eye. It often causes sudden loss of eyesight in 1 eye. You are at higher risk if you are older or have high blood pressure or diabetes. You are also at higher risk if your blood is thicker than normal. This condition is serious and needs medical care right away.

2024年7月15日 · An eye stroke or anterior ischemic optic neuropathy is a dangerous and debilitating condition resulting from a lack of sufficient blood flow to the tissue in the front part of the eye's optic nerve. An eye stroke occurs when blood flow …

2017年8月1日 · Central retinal artery occlusion (CRAO) is an ocular emergency. Patients typically present with profound, acute, painless monocular visual loss—with 80% of affected indi­viduals having a final visual acuity of counting fingers or worse.

2018年6月27日 · Branch retinal artery occlusion, or BRAO, is a common disorder of a branch of the central retinal artery that leads to ischemia in the retina. While some...

2020年1月30日 · The left eye (right side image) demonstrates a yellow plaque (indicated by the white arrow) lodged within the inferior retinal artery overlying the optic disc. Diffuse areas of retinal whitening can be seen distal to this occlusion tracking along the inferior arcade.

Branch retinal artery occlusion (BRAO) blocks the small arteries in the retina, the light-sensing nerve layer lining the back of the eye. The most common cause of BRAO is a thrombosis, the formation of a blood clot.