chahahc This is really interesting, and would tie into the BVD angle. If each individual eyes focusing on different layers of the LCD, that would cause the eyes to attempt to adjust back into focus, even through the image itself is not out of focus. This adjustment effort would activate facial muscles on the side of your head and browline, which is the primary path of the supraorbital branch of your trigeminal nerve (which I suspect is the central nerve responsible for our symptoms), constricting them and impacting the nerve.
I have some worrying experiences as of late, the patching seems to be getting less effective. Or, more specifically, my ability to go from patched - unpatched is causing me symptoms. I did just have sinus surgery 3 weeks ago, so my hope is that all the healing still going on in my head is what is responsible for this increased sensitivity and in a few more weeks it will get back to normal patching behavior. Nothing I can do but wait and see.
Mike, did your multi year experience through this have ups and downs as far as your sensitivities went, or was it a fairly linear progression?
I don't think they are a "scam", they jut seem to be overpriced versions of prism lenses you can already get for cheaper. They seem to be charging a lot of $$ for the brand name. But if they work for you, by all means use them. If they have a money back garauntee as ryans said, it cant hurt to try.