When I was coming to terms with a prediabetes diagnosis last year, I had been reading about vision issues and diabetes and, as I had blurred vision, was wondering if I was further on with diabetes than I had been told. When I went for an eye test it turned out I had a cataract! I am relatively young for that, but have to say that having it removed and a new lens replacement has made a huge, positive difference. Blurred vision was affecting my balance before. But I don't think it was related to diabetes issues in my case. I did get quite a few eye infections, too. Again, not related to blood sugar levels, it turned out. Probably a good idea to have an eye test if you can. I noticed some of the opticians offer discounted tests, if you use a code on their website to book an appointment (in case it's something you would normally have to pay for).