Well, yes, januvia can just lead to blurry vision. So you should be careful about it. Generally speaking, januvia is a prescription medication used to treat type 2 diabetes, which is a chronic disorder that has an effect on the way the body metabolizes glucose. And according to some experts,, there are some side effects because of taking it. For example, headache, infection of the upper respiratory tract, runny nose, sore throat, and stomach pain can be possible. Also, it can just affect your eyes, leading to dizziness, blurred vision too. Anyway, just pay more attention to it.