A 60 year old man comes to urgent care clinic. He says that an hour ago, he experienced vision loss in one eye; he covered each eye separately to test vision. The vision loss was painless and lasted several minutes. The fundoscopic exam is shown above. Currently, his vision is normal and neurologic exam is unremarkable.
Challenge: This is a tough case, but what's the most likely etiology?
1. What is the symptom described here called?
2. What is the finding in the fundoscopic exam?
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