Vision that fluctuates may be due to a variety of conditions. One of the first things I think of when I get a complaint of fluctuating vision is systemic conditions, more especially Diabetes. If you find that sometimes your vision is ok, other times it’s not, sometime you need your specs, other times you don’t, getting your blood glucose and your blood pressure checked is a good idea. It’s often the little things that give us clues to the big things. Don’t ignore any changes that you experience.