Hi Sue
I remember reading something on my phone and the words becoming slightly blurred as if when you are feeling dozy. This happens a lot. I reached for my reading glasses which I never normally wear because a well known Opticians that advertise massively on the TV gave me some glasses that puts everything on a slant.
I took them off and then I had a situation where the words were completely unreadable and I had blurred vision to my far righthand side.
I didn't think at the time it could have been the glasses, but now I'm thinking it could have been.