My eyes were all over the place when I was initially diagnosed...I had really..really..really high Blood Sugar levels. The irony was 1 week before my diagnosis I had my regular eye test and all was well. However as I was on maximum Glicazide (160Mg) and Maximum Metformin (2000Mg) to get my levels down rapidly I found that my current pair of vari-focals were going off. So I went back to my opticians and for another eye test, around a month after diagnosis and sure enough they changed, so as we acknowledged that my eyes would probably change again (as I was still on a rapid BG reduction treatment) bought two pairs of glasses, really cheap frames and single vision lens; one for "distance" and one for reading. A couple of months passed and I was finding my new "distance" pair were starting to go off. So I put my old vari-focals back on and hey-presto everything back to crisp-clear!! But reading was off, so I ended up using my "distance" pair for reading(!) and the reading pair for close-up (I'm sometimes asked to repair laptops, PCs that have really small parts and these were perfect). So between the three pairs of glasses I had something for any situation. So I wouldn't worry too much about this, I'm told your changes to BG levels will effect you eye lens. I've just, this week, had a 12 month opticians eye test and I'm told my eyes are back to what they were on diagnosis(ish!): I have new vari-focals that I can use for reading and distance. I still have my close-ups for laptop repair!