I had a similar experience. I got severe migraines all throughout my childhood. When I was studying my masters I couldn't handle all the reading so I went to th

I had a similar experience. I got severe migraines all throughout my childhood. When I was studying my masters I couldn't handle all the reading so I went to the optometrist, who sent me to a binocular vision specialist who prescribed a vertical prism on my right eye, which points slightly down at rest. I had been correcting for this manually for 20 years which is what had caused the migraines, since independent vertical movement is super strenuous on the eyes. Haven't had a migraine since!