Central Retinal Artery Occlusion (CRAO): What to Know
This keeps oxygen and other nutrients from getting where they are needed. CRAO may happen seemingly out of nowhere and without causing pain. The first symptom may be sudden vision loss. seb_ra / Getty Images Thisrequires emergency attentionto help save vision. CRAO is also known as aneye stroke. seb_ra / Getty Images What Causes Central Retinal Artery Occlusion (CRAO)? Anything that keeps blood from flowing through the vessels as it should can cause retinal vascular occlusion....