Having a routine comprehensive eye exam is the most important thing someone can do to prevent computer vision problems.
Use proper lighting.
Eye strain often is caused by excessively bright light.when you use a computer your ambient lighting should be about half as bright as that typically found in most offices.
Glare on walls and finished surfaces as well as reflections on your computer screen also can cause computer eye strain.Consider installing an anti-glare screen on your monitor.
Adjust your computer display settings.
Adjust the display settings of your computer can help reduce eye strain and fatigue.
Blink more often.
Blinking is very important when working at a computer, blinking moistens your eyes to prevent dryness.
Exercise your eyes.
To reduce your risk of tiring your eyes by constantly focussing on your screen,look away from your computer at least every 20 minutes and gaze at a distant object(at least 20 feet away)for at least 20 seconds.
Take frequent breaks.
To reduce your risk for computer vision syndrome and neck,back and shoulders pain,take frequent breaks during your computer working day.
Be cool and wear your shades.
Sunglasses are a great fashion accessory but their most important job is to protect your eyes from the sun's ultraviolet rays.When purchasing sunglasses,look for ones that block out 99 to 100 percent of both UV-A and UV-B radiation.
Clean your hands and your contact lenses properly.
To avoid the risk of infection,always wash your hands thoroughly before putting in or taking out your contact lenses as instructed by an optician and replace as appropriate.