More than 70 million U.S. workers use a computer, and more than 88 percent of them complain of computer-related eyestrain, according to the National institute of Occupational Safety and Health. If you use a computer daily, you may experience symptoms that include blurred vision, eyestrain, headaches, nausea, double vision, and burning and itching eyes.

Pinpointing and removing the cause of CVS usually makes it go away. If you suspect you have it, consult an optometrist who specializes in the syndrome, and who in turn will help determine the cause. The main culprits include glare, computer placement, and screen color.

Glare can be reduced with proper lighting. Use warm white or deluxe bulbs in place of cool white bulbs, and consider investing in a glass—not mesh or nylon—antiglare screen. Also, vertically angle your monitor 15 to 30 degrees so it is positioned below eye level. Another consideration is achieving good background and foreground contrast with your screen color.