I know exactly what you are going through. I have virtually identical symptoms. My has led to anxiety and depression. I am to be checked for allergy issues, I have none that I'm aware of. My EEN doctor looked in to make sure everything was fine mechanically, it was. He told me that allergys can make the muscles in the ear tighten, could maybe effect the eyes?
Hang in there, stay busy, try not to dwell(Iknow it's very hard not to) and let me know what you find out, I will do the same.