Your vision should return to near normal or normal once you get your blood sugars down. I had the same thing happen to me, and I am a type 1.5. In fact, I thought I was going to need new glasses and went to the ophthalmologist a day after I saw the doctor. I didn't have my diagnosis yet from the doctor, but the eye doc said: "You either have cataracts or diabetes." I told him I'd prefer cataracts, but it turned out he was right on with the diabetes diagnosis, unfortunately! I had all the classic symptoms, so I was pretty sure that was what it was going to turn out to be. It looks like you are on the right track and are motivated to take charge of this disease. Do as Dave has suggested, eat right, exercise, check often, and take your medications! Good luck.
Suzanna