Yoshimi - 3:15 pm on Nov 6, 2008 (gmt 0)

You are going to struggle in 90% of jobs if you are unable to sit in front of a PC for long periods, unless you are willing to work in something like retail or nursing (and even then you will probably have a few hours a day in front of the PC)

To give you an idea though I work in a large company and spend between 2-6 hours a day in front of the screen, the rest of the time is meetings generally.

You can always print out blogs and such to reduce the amount of time doing on screen reading that you do, you can get glare reducers and set up your monitor to display in a way that you find comfortable, and you can also request that the company get screen reader technology and allow you to do that if you feel it is necessary to allow you to do your job. These are things that will apply whether you continue in a computer based field or not though, as I said there are few jobs where you can work without using the pc.