You can usually tell when someone has been sitting for a long stretch in front of a computer monitor--they tend to suffer from Dry-Eye Syndrome: red, itchy, irritated eyes. Now researchers at Japan's National Institute of Industrial Health have found that monitor placement may be the culprit.
If your monitor is level with your gaze or raised above it, the higher angle of your head reduces the volume of tears produced by your tear ducts, which results in eye irritation. Lowering the monitor's position--and the angle of your head--increases tear production and soothes tired eyes.
The researchers also claim lowered monitors reduce neck-muscle fatigue, and improve attention span and the overall comfort of computer users.