You have my sympathy. I've had work related ocular meltdown too. One of the reasons I'm actually glad to be unemployed for the moment is that I have the eye strength to use my home computer as much as I like. Graphic design is brutal on the eyes and I went through a phase where I barely even touched my laptop due to overworked eyeballs.

Make sure you give yourself a little break here and there. I once ignored the discomfort for too long and woke up the next day with one eye not focusing properly. It went back to normal after about ten minutes but it was a very freaky and sobering experience.