Use of proper lighting:
Eye strain is often caused by excessive bright light from either external sunlight entering through a window or hard interior illumination. When using a computer, ambient lighting should be about half bright as the one usually found in most offices.
Eliminate the outside light by closing curtains, shades or blinds. Reduce internal illumination by using fewer lamps or fluorescent lamps or use lower intensity bulbs and tubes. If possible, place your computer screen or screen so the windows are on the side instead of behind or behind it.
Many computer users find that their eyes feel better if they can avoid working under general-purpose fluorescent lights. If possible, turn off the fluorescent lights in your office and use floor lamps that provide indirect illumination with halogen or halogen lighting.
Sometimes the transition to "full spectrum" fluorescence lighting that most closely approximates the light spectrum emitted by sunlight may be more comfortable for computer work than regular fluorescent lamps. But even full-spectrum lighting can cause discomfort if it's too intense. Try to reduce the number of fluorescent tubes installed above your computer's workspace if you are disturbing the lighting.
The most important thing you can do to prevent or deal with vision problems in the computer is a complete eye exam. If you have not had your eyes looked at, for more than a year, plan a visit with a doctor near you. Many times a minor degree of hyperopia or Astigmatism can cause significant eye strain on the computer if left uncorrected.
According to the National Institute of Occupational Safety and Health, computer users should be screened before they start working on a computer and once a year.
During your examination, tell your doctor how often you use the computer at work and at home. Measure the distance of your screen from your eyes when you sit on your computer and update so that your eye doctor can control your eyes at this particular working distance.
Minimize reflections.
Reflection on walls and painted surfaces as well as reflections on your computer screen may also cause fatigue on the computer's eyes. Consider installing an anti-glare screen on your screen and, if possible, paint white, lighter white walls with a matte finish.
Again, cover the windows. When the outside light can not be reduced, consider using a computer hood.
If you wear glasses, buy lenses with anti-reflective coating (AR). AR coating reduces reflection by minimizing the amount of light reflected from the front and rear surfaces of your glasses lenses.
Upgrade your screen.
If you have not already done so, replace the old screen with a tube (called a cathode ray tube or CRT) with a flat-panel LCD, such as on laptops.
LCD monitors are easier on the eyes and usually have an anti-reflective surface. Old CRT screens can cause a remarkable flicker of images, which is a major cause of eye strain on the computer. Even though this flicker is impossible, it can still contribute to eye strain and fatigue while working with a computer.
Complications due to flicker are even more likely if the screen refresh rate is less than 75 hertz (Hz). If you need to use a CRT at work, adjust the screen settings to the highest possible refresh rate.
When selecting a new flat screen display, select a screen with the highest resolution possible. The resolution is related to the "pitch pitch" of the screen. In general, screens with a lower tilt of the dots have sharper images. Choose a screen with a dot height of 0.28 mm or less.
Flickering is not a problem with LCD screens, as the brightness of the pixels on the screen is controlled by a "backlight" usually operating at 200 Hz.
If you notice a lower refresh rate (eg 60 Hz) on a LCD screen, do not worry - this tells you how often a new image is taken from the video card, not how often the screen brightness is updated, and this function typically is not associated with eye strain.
Finally, select a relatively large screen. For a desktop computer, select a screen with a screen size of at least 19 inches.
Customize your computer's display settings
Adjusting your computer's screen settings can help reduce eye strain and fatigue. In general, these adjustments help:
Exercise your eyes ..
Learn about special computer glasses..
For greater comfort on your computer, you can ask your optician to use special lenses with new type computer filters , as well as modify your prescription glasses to create customized eyeglasses.
If you normally wear contact lenses, it may dry out and disturb you during continuous work with a computer.
Computer glasses is also a good choice if you use multifocal glasses because these lenses are generally not optimal for the distance from your computer screen. You can also see photochromic lenses or specialized Lutina lenses for computer glasses to reduce your exposure to harmful, high-energy blue light emitted by digital devices. Ask your optician for details.
Blink more frequently.
Blinking of the eyes is very important when working on a computer. Frequent blinking moistens your eyes to avoid dryness and irritation.
While working on a computer, people tend to blink less often - about a third as normal - according to studies.
Tears that overlap the eye evaporate faster during long phases that do not blink the eyes and this can cause dry eyes. Also, the air in many office environments is dry, which can increase how quickly your tear evaporates, causing more dry eye problems.
If you experience dry eye symptoms, ask your doctor for artificial tears for use during the day.
Incidentally, do not confuse eye drops with drops intended for "red eyes". These can actually make your eyes look better - as they contain ingredients that reduce the size of the blood vessels on your eye surface to look whiter. But it does not mean they reduce dryness and irritation.
