What Causes Shaking Of Eyeballs During Migraine?

My Eyeballs shake back and forth when I wake up ... Goes away after about two minutes what is this ? I am 25 white and female and suffer daily migraines I am taking 125 mgs topamax and 25 mgs amitriplyme for sleeping and esgic for pain ( none off this meds seems to be working ) is my meds causing my eyes to shake ?