I'm not sure if the pain you are referring to is just regular migraine pain, or something else.
I do know that when I have a migraine, it's usually just one side of my head that hurts, and the pain generally hovers over one eye...or righ in the bridge of my nose. The eye pain feels like pressure over one eye, like the pain is radiating right from my eye.
Hope this helps.
check out Trigeminal Neuralgia.