About a month ago I had dozed of in front of the TV. When I woke up, my vision was blurry in both eyes. I could not get them to focus. This lasted for about 30 minutes, then cleared up. I had a slight headache but no other symptoms that would indicate a potential stroke... but why take chances, I contacted my doctor. I ended up getting a carotid artery MRI and brain cat scan. Both showed everything was fine, arteries clear, no sign of stroke ever occurring.
I had a visit with my eye doctor today. they took images of the eye and showed me the pictures. Everything was in good shape - no retina issues, no issues with the blood vessels in the eye. The doctor thought it may have been related to eye strain/dryness from watching TV, since I feel asleep while watching it and I have had dry eye issues in the past. So I need to be better about using eye drops.