Hello, Thanks CHfather for this study information.
Nikkicch to answer your question, I would just say that during those ocular manifestations, being in the dark, I try to relax and breath to get control over the headache. It could create a sort of meditative state that make me lose track of time. Luckily in a sense, my mother has those ophthalmic migraines too, so she knew what it was when it first happen to me. They happen only 3 or 4 times a year in my case.
Wish you the best