I came across this great software that allows you to play the "Visual Snow Relief" Youtube video as a transparent overlay over your computer. Using it, you can watch it for long periods of time while still doing work on your computer. It's 100% free.
Using this makes my symptoms a lot better while working. Here is the link to find more about the project. Scroll down a bit to see an explanation on how to download it and other details.
Hope it helps!