I started to get the full range of symptoms a few months ago. I tried erythromycin (sp?), dexamethasone, tobradex, patanol, baby shampoo, lens scrubs, etc. It only got worse. Finally, the opthalmologist (first time he saw actually saw me in the office due to the fact that I had been travelling), told me I had been taking Alphagan (a glaucoma medicine) for so long that I had become allergic to it. Voila! Within hours of discontinuing the Alphagan, the symptoms started to go away. So, if you are a glaucoma patient and taking that drug, be sure and ask about that.
Best of luck.