I have recently written one article strongly putting forth certain facts, in favor of ridding of goggles.  However, in certain cases like riding on two wheelers, bathing in sunshine and taking up activities in such shine, glasses are inevitable to protect your eyes from the environmental impact.  These glasses, then, are precaution for protection of the vision.

There is a myth that viewing computers make you nearsighted due to the pixels.  Ignore this since viewing computer screens is just like reading a book.  But, a recent study shows that in America, 70% of people who regularly work in front of a computer have some sort of PC eye strain, due to fatigue in the eyes.  This has become such an issue that the complication has been given a formal name, "Computer Vision Syndrome” (CVS), whose manifestations include:
Blurred vision, Double vision, Burning and painful eyes, Seeing double, Headaches, sometimes bordering to migraine strength, Shoulder, neck and upper back pains and stiffness, Inability to focus as well on the computer screens as they previously were able to do, Experiencing eyes that feel tired.

The cause for CVS is that words and characters on PC screens are simply harder for the human eyes to focus on than is print in magazines and books and also shifting focus among the screen, keyboard and also the matter on the table to be fed into the system.  These frequent shifts in sights have an appreciable effect on the severity of these symptoms.  This causes the eyes to work overtime and eventually strain constantly trying to focus. Technology has changed to a great extent to accommodate anything in the PC.  But, our body postures have not changed.] Spending any length of time sitting in front of a computer can be detrimental to our bodies as well eyes.  Most individuals who wear no-line progressive lenses in their glasses, trifocals, and even bifocals suffer from some degree of pain in our back and neck areas due to the method of sitting, the way that the head must be tilted often in order to appropriately see the information that is on the computer screen. 

People, including children who spend about two hours per day on a regular basis looking at a PC screen will most likely contract some form of CVS.
Fortunately, there have been extensive studies that conclude that if one has the right computer glasses, they can not only see better than before, but they can feel better overall! The cause of the problem is that if the individual sitting in front of the computer does not have the appropriate occupational computer bifocals Computer Vision Syndrome may sets in.  Scientists have developed eye glasses specially intended to do away with the indications of CVS, hence enabling your visual surfing schedule virtually comfort.

Wearing anti-glare eye glasses removes the tiredness and pain due to working in front of computers for long hours.  It is important to dispel the notion that near vision lenses and distance vision lenses will achieve the same tasks as computer glasses – surely they will not].  The reasons is that the zone of vision for near and distance vision activities, e.g. reading and driving, is different from that of computer vision activities.  Also, due to the construction of the lenses, these glasses would not be suitable for other purposes like reading or driving. Computer glasses are customized to correct vision for PC use and reduce eyestrain, resulting in more comfortable vision at the PC.  Computer glasses come in many varieties like single vision lenses and also are comparatively inexpensive.

If you are interested in a pair that corrects vision for different zones, it is better to visit a doctor or optometrist who specializes in PC vision related eye problems to have your glasses tailored. Multi-focal lenses are quite popular for people who have problems with vision in zones. 

PC eye glasses usually come with an anti glare coating that eliminates reflections from the screen on the lenses and also cuts down on glare from the PC screen itself.
Computer eye glasses do not have to look like bulky lab goggles. Optometrists can now fit PC glasses into any design of frame and style. This eliminates any aesthetic or social concern from the equation and brings PC eye glasses into the mainstream. It is possible to adjust the PC eye glasses to compensate for different lighting, different tinted computer screens, vision requirements of older individuals and more.

Computer eye glasses need not be bulky lab goggles. Optometrists can now fit PC glasses into any custom frame and style. This eliminates any aesthetic or social concern from the equation and brings PC eye glasses into the normal course. It is possible to adjust the PC eye glasses to compensate for different lighting, different tinted computer screens, vision requirements of older individuals and more.

PC glasses can be a good suggestion even for people without any obvious symptoms of CVS].  Even if it is not obvious, anyone who has to use a PC for more than a couple of hours a day is sure to strain his eyes, even without his knowledge. The PC eye glasses can increase the productivity of the individuals.

Some of this information can also be valid to other types of screens, such as that of TVs, handheld games and cell.

Some tips for persons (including children) who sit before computers for more than two hours a day:

Back up the screen.  16-24 inches is a good distance, based on your eyesight and the size of the screen.

Adjust the screen settings. The screen should be compatible to room lighting and should not appear to be a glowing box nor pitch black object.  If you make your screen a bit duller, it is actually easier to read]. 

Blink often.  Every now and then you can close your eyes for a few seconds. People blink at least half as much as normal when staring at the computer screen, because people usually squint and the eyes are not made for looking at monitors. It may be hard to remember to do this constantly.

10-10-10.  At an interval of every 10 minutes, look at an article 10 feet away for 10 seconds to get sight adjusted to long-distance too.  Too much time on the computer can also cause fatigue. Taking short breaks from near work lessens some tension.

Use the computer less. Type faster and be able to get off faster.

Stay hydrated so that you have enough tears.  Before and after long periods of time with computer, lubricate your eyes.

Your eyes can also become inflamed and dry from being dry but don't use "get the red out" drops since these can cause rebound redness and this makes the bloodshot condition chronic. Get rid of the dryness and the inflammation gets eliminated.

Follow regimen. Do exercises in a routine manner than to do them for long time. An eye movement for about 30 to 60 seconds every hour will be very conducive.