I've had migraines where my vision becomes impaired. It almost becomes a sensation of being able to know that your eyes are working, but there's almost a disconnect between your eye and your brain because you're not able to process the stimuli that you're getting. So it's weird because you can still detect that you're seeing, you're able to see it, but you're not actually able to see. It almost becomes blurred out or blacked out.
So I already have impaired vision with my glasses, but if I'm having a really, really bad migraine where it's almost unbearable to take, it does impair my vision way more, which was really inconvenient if I was driving somewhere and I didn't have anybody else to drive or if I had to pull over to have someone else drive. So far I have not had that happen. It's usually happened when I'm already out and about and someone else can drive me, but it does really impair the way I can see. I start getting almost tunnel vision and that's really frustrating because you're fighting your pain in your head and you're also trying to see and you're struggling to see, so that can be extremely difficult. So that's what I get out of it is I'm very impaired with my eyesight.