Mine was not scary, because I didn't realize what was going on and it hadn't started hurting yet.

You are braver than me! I would convince myself it was a retinal detachment or a stroke!

Some of them that have happened to her have been pretty scary. Like I said she doesn't have them nearly as often now.

I think it changes with age - I used to get them a lot more as a kid and a teenager so I wonder if there is some hormonal component.