Out of interest (as I am from the age of eyesight worry rather than bones) is it something everyone gets, or is it like Athritis?
Mainly because I have used 'puters for 20 years now and haven't a single problem like this. Hell, I still even have 20-20 vision. And I've pretty much used a computer probably an average of an 3-4 hours a day for those 20 years. The last eight years has been intensive 7.5 hours (not inc. overtime) a day doing work programming too. With a few hours most nights either surfing or programming. Thats a lot of keyboard time. And the last four years I haven't even used a wrist rest (get in the way too much). And apart from a screen glare I'm as ergonomic as a cheesecake. erm...
Anyhows, what I'm trying to say is basically if you are prone to this sort of thing then you will probably get it one way or another. My sister got arthritis when she was 10, for example, and a keyboard hurts her if she uses it for more than 10 minutes at a time. Myself, I can do 10 hour shifts, constantly programming, with no real problems apart from the occassional eye ache, and the odd ciggy break.
Although I would say that 1-2 hours a day is nothing really.
Cheers
I am 99% probably lying in bed right now... so don't blame me for crappy typing