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  2. Central retinal artery occlusion - Wikipedia

    en.wikipedia.org/wiki/Central_retinal_artery...

    Central retinal artery occlusion (CRAO) is a disease of the eye where the flow of blood through the central retinal artery is blocked (occluded). There are several different causes of this occlusion; the most common is carotid artery atherosclerosis .

  3. Ocular ischemic syndrome - Wikipedia

    en.wikipedia.org/wiki/Ocular_ischemic_syndrome

    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 ...

  4. Acute visual loss - Wikipedia

    en.wikipedia.org/wiki/Acute_visual_loss

    Central retinal artery occlusion: CRAO is characterized by painless, acute vision loss in one eye. [11] Central retinal vein occlusion: CRVO causes sudden, painless vision loss that can be mild to severe. [12] Branch retinal vein occlusion: sudden painless vision loss or visual field defect are the main symptom of BRVO. [13]

  5. Amaurosis fugax - Wikipedia

    en.wikipedia.org/wiki/Amaurosis_fugax

    Atherosclerotic carotid artery: Amaurosis fugax may present as a type of transient ischemic attack (TIA), during which an embolus unilaterally obstructs the lumen of the retinal artery or ophthalmic artery, causing a decrease in blood flow to the ipsilateral retina. The most common source of these athero-emboli is an atherosclerotic carotid artery.

  6. Cherry-red spot - Wikipedia

    en.wikipedia.org/wiki/Cherry-red_spot

    The cherry red spot is seen in central retinal artery occlusion, appearing several hours after the blockage of the retinal artery occurs. [4] The cherry red spot is seen because the macula receives its blood supply from the choroid, supplied by the long and short posterior ciliary arteries , while the surrounding retina is pale due to retinal ...

  7. Hollenhorst plaque - Wikipedia

    en.wikipedia.org/wiki/Hollenhorst_plaque

    Hollenhorst plaques may cause retinal occlusion, where the plaque blocks blood flow through the retinal vessels, resulting in temporary or permanent vision loss in the affected eye. [1] However, while Hollenhorst plaques do become lodged in retinal arteries, they generally do not fully prevent blood flow so do not cause ischemia. [1]

  8. Retinopathy - Wikipedia

    en.wikipedia.org/wiki/Retinopathy

    Radiation, solar retinopathy, and retinopathy of prematurity fall under this category. The third common mechanism is occlusion of blood flow. This can be caused by either physically blocking the vessels of the retinal artery branches or causing the arteries to narrow. [2] Again, the result is reduced blood flow to the retina causing tissue damage.

  9. Rubeosis iridis - Wikipedia

    en.wikipedia.org/wiki/Rubeosis_iridis

    Other conditions causing rubeosis iridis include central retinal vein occlusion, [2] ocular ischemic syndrome, [3] and chronic retinal detachment. Pathophysiology [ edit ]