I'm sorry to hear of your difficulties. How is your vision? What is your age? What other medical conditions do you have (other than fibromyalgia)? What medications do you take?
I think there are two major factors in your problem: 1) dry eyes and 2) fibromyalgia.
You already understand about the severing of the corneal nerves leading to bad dry eyes. Sometimes it is quite sudden, because you were probably on the edge prior to surgery. You are already on serum. I also presume that you have had punctal plugs (if not, that can be done to help). If you haven't already tried it, Restasis was made for conditions like yours (dry eyes due in part to autoimmune process). It can help stimulate more tear production.
The second problem is the fibromyalgia, which we don't know a whole lot about; but I think there definitely is an autoimmune component to it which can also dry out your eyes. Perhaps treating that (antiinflammatories) can also help.
Hope this helps and thank you.
I think the symptoms may be a combination of dryness and inflammation; so treatments need to be directed at both. Of course, the problems that you have does not preclude you from having other common problems (like sinuses). Some of these symptoms may be from sinuses as well.
You have a multifactorial problem that needs a multifactorial approach -- dry eyes, inflammation, and possibly sinuses.
In a study in 2004, it was noted that corneal nerves start to regenerate about 6 months after LASIK. By 2 years, they were similar to the preop stage. In some people the nerves decrease again between the 2nd and 3rd year to 60% of preop amount. There have been experimental uses of growth factors that seem favorable in increasing nerve regeneration (at least in rabbits). Also use of Cyclosporine has been shown to increasing nerve regeneration (ironically, this is Restasis).
Unfortunately, I would think that your corneas should have been back to peak by now. Keep in mind that your peak in the right eye is much more reduced due to the Herpes.