Can a migraine increase your eye pressure when they check during an eye exam?

No likely. If you have migraine on the day of the eye exam you should probably cancel your eye exam appointment on the other hand if you do go the eye pressure is not directly affected by having a migraine.
Migraine and IOP. No, there is no relation between migraine and iop (intraocular pressure), people make this mistake because it feels like they have "pressure behind their eyes" during a migraine episode emil chynn, md, facs, mba park avenue lasek.