text: It certainly can, but there would normally be other problems as well.   Vertigo and ballance problems can be caused by infections near the vestibular section of the vestibulococlear nerve (cranial nerve 8), that passes through the internal acoustic meatus, which is connected to the teeth because the teeth get sensory innervation from branches of the facial nerve, which also passes through the internal acoustic meatus.  Blurred vision would be a little harder to explain, I'd bet the optic nerve is not being impinged upon, but perhaps the infection is causing pressure inside the orbit and blurring the vision.  I hope you are at the very least on an antibiotic.  This isn't really all that likely to have happened, and it would be a little easier to believe if you also had ringing ears and painful, puffy eyes.  Perhaps the dental infection and the other symptoms are unrelated, but either way they need to be treated.