Auras are visual things that sometimes preceed a migraine. Mine have been like... general weirdness or halos/rainbows around lights. One time, in the outside corner of my vision there was rapidly flashing black and white (like a strobe). That one was really weird, and since I'd not had that one before, didn't recognize it as signalling an oncoming migraine. As you can imagine, it was pretty freaky and I didn't know what to make of it! Some people apparently have a pixelation kind of effect in their vision. (Once a migraine hits, it's pretty well universal to have a complete aversion to light. Even very minor light -- like a candle flame--is intolerable. But that's different.)

They may very well be unrelated, but hey, it's the brain. Pretty complex circuitry in there(!)

I hope you're able to get it figured out, Ryask.