Yes, I had double vision for several months and did the shut 1 eye trick too. I'm not saying you shouldn't see a doctor, but I am saying I didn't. The double vision just started 1 day and ended the same way, no unusual event. I did, however, switch DMTs right before my double vision corrected but I can't say one had a thing to do with the other.

Double vision comes and goes for me.

When laying down double vision bad. Always have to close one eye. Things are very blurry most of the time.

In 2007 I was in a restaurant with my friend and I remember saying, you look blurry, but thank goodness it went away, now I can't walk.

Sorry to hear that. My right eye has blurry and when I was first diagnosed in2004. The blurry vision was first in my left eye. I don't remember when the blurryness changed eyes. But that said I know other people who have temporary blurryness. My eye gets worse when I'm stressed.
Best of luck ❤️❤️❤️