I have had the same problems for over a year and a half: severe eye strain, light senstivity, and severe sound sensitivity (among other things). I have to severely restrict reading, computer use, and TV. Check out these two threads I started awhile back on ways of making your computer more accessible:

Tips for working with light sensitivity:

http://neurotalk.psychcentral.com/thread163832.html

Making your computer more accessible:

http://neurotalk.psychcentral.com/thread166767.html

If you can afford it, it is worth getting deep pressure massage, especially around the shoulders, neck, and back. Tension in these muscles can create tension in the muscles in the face and temples, exacerbating eye strain. It might also be a good idea to try a good chiropractor--preferably one that you can get a good reference on.

Vision therapy and vestibular therapy are both worth a shot. Light and sound sensitivity can result from vestibular problems, as visual and auditory processing affect the vestibular system and vice versa (for example, that's why it's much easier to balance on one foot with your eyes open than with your eyes closed; your vision plays a role in balance).

The only other answer I can think of is rest, rest, and more rest. To preserve your sanity, see if you can tolerate listening to audiobooks and/or podcasts. You can download free audiobooks at librivox.org (they only have books that are in the public domain).

Feel free to PM me if you want to talk more about specifics.