@kristyinoregon
Glad it wasn’t a stroke but a CT or MRI won’t pick up on a TIA unless it’s in progress.

With my first incident my vision became completely pixelated like yours and colored. Couldn’t see, so confusing, thought I was having a stroke, quickly did self-tests for stroke and then vision was suddenly normal within 30 seconds. No other symptoms. An NP friend convinced me to go to the ER because she feared I would have a stroke knowing about my afib. Waited 3 hours, busy ER, finally took me into a room like a closet and the doc said, let me save you time and money. You stood up too fast, you’re fine, go home. He was busy.

Well I was in the kitchen when it happened and it was nothing like things going black for two seconds from low BP and standing up too fast. That has happened a million times. I also was already standing when it happened.

After I got home from the ER, I was standing in my bedroom and suddenly just fell backwards. Not dizzy, not off balance, no warning, didn’t bend as I was falling, didn’t try to catch myself. I fell like a tree in the forest as if someone just flipped the off switch on me. No control. It was the weirdest thing. Luckily I didn’t hit the floor or hard furniture but fell back mostly into my recliner and just about broke it I landed so hard and fast. I thought, “Nice catch God!”

My neurologist suspected ocular migraine. I didn't make the afib connection till I had two more incidents. In hindsight, I believe the pixelation and falling were both TIAs post afib. Also, the short duration and sudden onset and ending are more indicative of a TIA than ocular migraine.

Good luck with your situation.