Very informative. Thanks.
My daughter always tells me that my vertigo is made worse by my style of glasses. I also tend to knock myself on walls and things. It's as if I can't judge the distance. I've had peripheral vision checked so I always just put it down to my vertigo. She thinks my glasses aren't helping.
I did the eye test on the site that Jo posted.

I failed. Off to to get my eyes tested asap. yikes