I have had problems with blurred vision while having yeast reactions. My eyes can water a lot during those times.
It makes it hard for me to read small print with my glasses on.
It's at its worst in the morning after I wake up. I can feel something on my eyes when I wake up, but it gets a bit better after I wash my eyes with water. It's a bit like wiping the sleep from my eyes only much more so.
I visited an eye doctor, and she couldn't find anything wrong with my eyes (that's usually my cue that it's yeast and/or heavy metals causing the trouble).