This is a response to ratthebrat's question about burning sensations in the eyes. The burning sensations and irritation are most likely due to either the preservatives or the methylcellulose in the Refresh eye drops you are using. I am 3 years post-op, and I used Refresh Liquigel almost constantly during the day until I had my lower eyelid repositioned and a gold weight implanted in my upper eyelid. Then I was able to switch to Refresh Tears, which are less viscous, and I was encouraged because my need for eye drops declined dramatically. (I had been using them every 5 - 20 minutes, and I was able to go an hour or two between application.)
I never understood why I needed to use drops so frequently, especially after the gold weight was implanted. I tried other drops (Genteal and Systane) but they weren't as effective. Then, a month ago, my eye started turning red and burning. I started applying drops more frequently to try to stop the pain.
On a hunch, I put drops in my normal eye, and it turned red. I realized that the culprit was increasing sensitivity to something in my eye drops.
I picked up a package of Bion Tears, which are single-use vials with no preservatives. Within 24 hours of use, my red eye cleared completely, and my need for eye drops plummeted to 3 times PER DAY. Within 48 hours, my eye began noticeably making its own tears again.
Needless to say, I am thrilled after 3 years to both see and feel a normal right eye again. After finishing the package of Bion Tears, I picked up Tears Naturale, followed by Refresh Plus, which are much less expensive single-use options. They are working great, and I'm down to about 1 vial per day now.