Take action: If there’s glare on your screen, move the screen, and if necessary move your desk; have a source of light, preferably natural light, off to one side - a source of light from directly behind your monitor will strain your eyes, because they’ll constantly have to focus on the varying intensities of the two light sources in your field of vision; have a desk lamp for reading papers - this reduces the discrepancy in lighting levels between reading on-screen and reading your papers.
Give your eyes a break
Using a computer day after day for hours at a time may be linked to the degenerative eye disease glaucoma, according to Japanese researchers. Therefore, it is important to reduce the computer's negative effect on your eyes.