I don't have any solutions for you, but I'll commisserate! I have the same thing and it's annoying. I've had it diagnosed as everything from "eye strain" from wearing glasses and working on a computer all day long, to "allergy eyes" (even though I have it just as bad at times when I'm not having an allergy flare).
So you're not alone, at least!
Half-assed Primal on and off for a couple years. Started back in earnest in January 2012.
Leptin Reset started 2/29/12
5'11" - Female - 32 Y/O
HW: 410+ SW: 375 CW: 340-ish
goals acheived thus far: Have ditched high-blood pressure medicine, was able to comfortably fit into a plane seat for my vacation in August 2012.