I have double vision in both eyes that comes and goes. If I read longer than ten minutes the words start blurring and I can see double words faintly below the real words. I notice my double vision the most when I look at the moon. I will see another moon offset below the real moon. One time my vision was so bad that my daughter appeared to have two noses. I was sober, really... I was. I only recently started Mestinon, and so far, I don't see any vision changes, but colors seem to be much brighter, but that could be because I'm feeling better and everything looks better when I feel better.