This is really out of left field but I thought I would mention it since many people who read this site often sit in front of their computers for extended periods of time.
I was having problems with my eyes becoming dry due to staring at a computer screen for an extended period of time. I went to my eye doctor and he recommended either glasses or to try these eye drops. The eye drops are made by AMO and they are call “Blink.” They are very good. I bought the Renu drops and thought those were the cream of the crop, the best, but I was totally wrong. They suck and the Blink drops are very good and wet your eyes for a really long time. I have to rewet them every few hours but they get the job done.