I am sorry to tell you yes. You know, if you get diabetes, you should do eye exams regularly to avoid eye problems. However, you really don' t need to buy a new pair of glasses when you find that you get blurred vision. Because this situation usually is temporary. It is known to all that diabetes can make eyes swell so that they can' t have clear vision. In order to prevent this, you need to control your blood sugar, which is helpful to your eyes. But sometimes, blurred may not be caused by diabetes, I mean, it may be caused by more serious eye problems. You really need to have your eyes examined regularly. I wish you could recover soon.