Are Ocular Migraines (scintillating scotoma) really seizures?

In the past week I've had 2 experiences that I'm told are scintillating scotoma or ocular migraines.. I was diagnosed over the phone by my opthamologists nurse (which really makes me crazy!!) Havent spoken to my Neurologist yet as it was the weekend..  I got finished exercising started to feel a little funny, looked down and there was a partial blind spot,darkness where there should have been my dog.. I looked to the left side and started to see a squiggly line moving up and down..this scared the heck out of me.. I went clear across my house to go sit down (go figure?)  all the time the lines kept moving.. Sat down.. I closed my eyes,continued to see the squiggles it petrified me but I was also determined to get to my computer to look this nightmare up.. got up & was incredibly dizzy and dont remember walking to my computer. this lasted maybe 5 minutes more & probably in total 10-15 minutes (i think?) then went away with a slight headache starting on the opposite side.

 The 2nd time was a little different and shorter. I left my house to go get my prescription, it was really sunny out & I didnt have sun glasses on right away.. ( i'm thinking photo sensitivity trigger) got to the drug store,went inside took my sunglasses off and started having that same experience with blind spots but this time on the right side.. my pharmacist,thank goodness, is a Dr and told me this is happening from Keppra xr and if it got unmanagable to change meds! My seizures are finally under control with the Keppra XR for the last month and now this... I cant imagine changing meds again!! After this happened the 2nd time I just went on with my errands for another 10 minutes and then home.. Was I really having a simple partial seizure? For sure my judgement was off both times .. Anybody have a similar experience or have any knowledge of this?

I do plan on calling my Dr in the morning.. MRI anyone? (:

Sash07