[paublyrne]

I feel mine started through squinting. My layman's theory is that this introduced tension to the muscles in the area, and around the glands, which inhibited them over a long period of time. It is much better now for me, but like you I can't follow the care instructions to the degree I should. I find a very gentle massage of that area after heat really helps, and I also try to relax the muscles around my eyes and being aware of them becoming tense whenever possible.

Like you say though, it seems to be something you manage rather than cure.