I had the very same symptoms & went through the same tests you had. For me, it was anxiety-related. I also realized that I was tensing up my forehead during the day at work or when I was nervous about something. I tried to be conscious of that & relax my forehead whenever I caught myself tensing up & that relieved many of my eye symptoms eventually. Hope this helps.
Yes, these symptoms could definitely be related to an anxiety disorder as well as many of the medications used to treat the disorder. I would have a very complete examination with an ophthalmologist first, then if everything checks out OK with the eyes, you might consider proceeding with the working assumption that it might be anxiety related. Remember, I am not your doctor and this is not meant to be taken as direct advise regarding your specific care - you need to see your own personal doctors for that.
Michael Kutryb, MD