Aug 1, 2017 · 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.

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.

Oct 30, 2015 · An old BRAO will resemble an old CRAO except that the findings will be limited to one quadrant of the retina and the optic nerve. Arteriolar and venous narrowing, partial optic atrophy, and arteriolar sheathing are other possible diagnostic findings.

Central retinal artery occlusion (CRAO) has been known as a clinical entity since 1859, when von Graefe [1] first described CRAO due to embolism. After that, Schweigger [2] in 1864 described it on ophthalmoscopy. It is an ophthalmic emergency because of instant, massive visual loss.

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.

May 2, 2024 · Central retinal artery occlusion (CRAO) is an ophthalmic emergency that can lead to sudden and severe vision loss. CRAO has been defined as interruption of blood flow through the central retinal artery by thromboembolism or vasospasm with or without retinal ischemia.

Central retinal artery occlusion (CRAO) is an ophthalmic emergency and the ocular analogue of cerebral stroke. Best evidence reflects that over three-quarters of patients suffer profound acute visual loss with a visual acuity of 20/400 or worse.

A blockage in the main artery in the retina is called central retinal artery occlusion (CRAO), which often results in severe loss of vision. However, about 25% of people who develop CRAO have an extra artery called a cilioretinal artery in their eyes.

The medical condition referred to as “central retinal artery occlusion” (CRAO) was first documented by Albrecht von Graefe in 1859. Subsequently, CRAO has consistently been identified as a serious medical condition that leads to substantial visual impairment.

Retinal artery occlusions can be categorized into branch retinal artery occlusion (BRAO), hemiretinal artery occlusion (HRAO), central retinal artery occlusion (CRAO) or cilioretinal artery occlusion (CLRAO).