Yes on the vision. It doesn't really get blurry exactly but like I have trouble really getting them to focus or my vision seems bouncy. I don't know if that makes sense! They are also sensitive to light. But yes, some days it bothers me more than others. I'm not sure if that's the sinus or inner ear (or the anxiety!). They found that I have a chronic sinus infection (no idea what's causing it-even after extensive allergy testing), which isn't responding to antibiotics. And also some weakness in my right ear.
As far as all the symptoms, I have a ton! Dizziness (even vertigo in the past), headaches, ear pain, vision problems, extreme fatigue, etc which the doctor says are all likely caused by these issues. The reason I headed straight to the neuro was all of this mixed with some tingling, burning, pain in my legs and muscle twitching etc. These likely come from the anxiety all this has caused lol!
As for what helps, I'm slowing improving with a mix of therapy for my anxiety, and something called vestibular rehab therapy for the ear. Basically balance and eye type exercises to compensate for my lack of function in one ear. The sinus I am trying more long term antibiotics and a special rinse the allergist gave me. If these don't work, I'm likely to need a minor surgery to clear them out. Which at this point, I would be fine with if it could help me feel better!
I hear what your saying on MS when you google. It seems like no matter what I google, that comes up somehow. I'm really working hard on not googling for that very reason, it's always a set back for me. I still hold onto that fear, and have to work on it daily but I am making progress! Don't let yourself get that far. Even though you said it seems like a lot of people have it, overall it is still fairly rare. Sadly, I've done the math lol. Even lower with no family history.