Use shades or blinds to control outside light. Turn the display away from the window or direct light sources. Tilt display to avoid glare from overhead light sources. Keep display screens free of dust. Get sufficient rest.
Exercise is one of the key elements in the successful ergonomic program.
Move around at least once an hour during intensive computer use. Shift positions frequently. Give your eyes a rest for a few seconds. Use moisturizing drops to help soothe strained or dry eyes. Buy computer glasses if recommended.