Welcome to the Forum!
I have had the same problem with vision. It comes from the blood glucose levels being high for a long period of time. Once you get your blood glucose level down to a more normal average (shoot for an average less than 140 mg/dL) your vision should return to normal.
Read through the first three threads in the Type 2 Section, when you get a chance, if you have not already done so. These threads will most-likely help you a lot. Self education is one of the keys to successful management of your diabetes, along with a healthy / sensible diet and exercise. Basically, diabetes requires a life-style change for the better. Good luck with your control and management.