I've had migraines before, but never with an aura. I'm almost 30, and I always thought auras would usually start happening when you were much younger.

I was in the drive-thru teller at the bank and they had not turned off their nightime security lights, I remember staring at them as I waited. After I left I started seeing a flashing light in the center of my visual field. I thought it was just an after image from from the security lights, but it started to expand, so I drove back home. The distortions were sort of a zig zag pattern and I could still see them if I closed my eyes. This lasted about 10 minutes, then my central vision returned to normal and then zig zags gradually disappeared from my peripheral vision.

I did a search and it sounds like I had a "scintillating scotoma".

I was a bit nervous so I had someone drive me to the eye doctor right away. I had a headache for about 30 mins afterward, which was gone by the time I got to the doctor. She did a full eye exam and dilated my eyes, she said everything looked fine. I felt nauseous for a couple hours afterward, but I think this might have been caused by the dilation.

Also I told my dad about this and he said the same thing used to happen to him every couple of months since he was a teenager. I remember him talking about it before, but I had no idea what he was describing until now.