Eye Care Blog

Have you ever experienced that your eyes are very dry, fatigue and blurred when you face to a computer for a long time? Those are some symptoms of computer vision syndrome (CVS).CVS is a temporary condition resulting from focusing the eyes on a computer display for protracted, uninterrupted periods of time. These include headaches, blurred vision, neck pain, fatigue, eye strain, dry, irritated eyes, double vision, polyopia, and difficulty refocusing the eyes. These symptoms can be further aggravated by improper lighting conditions (ie. bright overhead lighting or glare) or air moving past the eyes (e.g. overhead vents, direct air from a fan).

Facing to these problems, what can you do? If you just have these symptoms for a short time, a comprehensive eye test is necessary to make sure the exact trouble and update eyeglass prescription. If your glasses are latest, you are still troubled during computer work. The best choice is to consider buying a pair of professional computer glasses. These special-purpose glasses are prescribed specifically to reduce eye strain and give you the most comfortable vision possible at your computer.

Computer glasses are different from regular eyeglasses or reading glasses in a number of ways to optimize your eyesight when viewing your computer screen. Computer screens usually are positioned 20 to 26 inches from the user’s eyes. This is considered the intermediate zone of vision — closer than driving (”distance”) vision, but farther away than reading (”near”) vision.

Though they sometimes are called “computer reading glasses,” it’s best to call eyewear designed specifically for computer use “computer glasses” or “computer eyeglasses” to distinguish them from conventional reading glasses. Computer glasses put the optimum lens power for viewing your computer screen right where you need it for a clear, wide field of view without the need for excessive focusing effort or unhealthful postures.

By getting a pair of computer glasses, the first major benefit is that it helps to relax the eyes. The second major benefit is that it helps you to see the words on the screen better. The final benefit of wearing a pair of computer glasses is that you will protect not only your eyes, but also your head area from the potentially harmful radiation. If you are always facing computers all day, don’t hesitate to buy a pair of this special computer glasses!

With the spread of computer use, more and more people are bothered by computer vision syndrome (CVS), symptoms of which include blurry vision, severe headaches and dry eye. In fact, CVS is a cumulative result of long-term of computer work. During the lasting computer tasks, some people are forced to strain their eyes.

Symptoms of CVS are actually common among regular computer users. And this group is still continually increasing so that protection against CVS is quite necessary. Currently, there are special computer eyeglasses particularly designed for performing computer tasks. Computer screen reading requires an intermediate vision zone, which is different from both distance vision and near vision. As a result, common prescription eyeglasses for myopia or hyperopia correction can not help in computer work.

Computer reading glasses are meant to decrease eye strain. These glasses are manufactured with a slight power that can bring down the focal length to a particular level. The power of computer glasses can be + 0.25, which is the lower limit. Properly maintaining focal length between the lens and the computer screen, most computer eyeglass lenses are produced with a powers ranging between + 0.25 and + 0.75.

In addition, computer reading eyeglasses are sold in ordinary eye stores without a prescription from the doctor. But customers are better to buy non-prescription computer eyeglasses from recognized stores. Of course, customers can get their computer eyeglasses customized in order to make them suit personal requirements and working environment.

Computer glasses also involve different styles with a wide selection of frames and designs. Most computer reading glasses are made of stainless steel that they feature lightweight. In addition to low weight ones, there are also rimless computer eyeglasses. Well-fitted computer eyeglasses can also block out harmful ultraviolet rays. In addition, computer reading glasses can also be applied with anti-glare coating, which can resist glare from the computer screen. Most computer eyeglasses are inexpensive.

Computer focus has unique visual demands that are unlike with other activities, so that a prolonged computer use may bring eyestrain and fatigue more easily. Some of the people under 40 can not remain accurately focused on the computer screen for a long period, or get tired from the frequent switch between the screen and the keyboard. Presbyopia on people above 40 may also cause CVS symptoms such as blurry vision and headache.

The simplest way to address CVS (Computer Vision Syndrome) is the special computer glasses, which are superior to regular prescription glasses. All those commonly used prescription glasses such as reading glasses, bifocal glasses and single vision glasses for myopia are not designed to suit computer use. The reason is that computer focus needs the intermediate zone of vision, which is closer than distance vision and farther than near vision. Even trifocals and progressive glasses can only cover a small portion of this area.

The University Of Alabama School Of Optometry has conducted a research of participants between 19 and 30, who either wear computer glasses or non-corrective glasses. Researchers recorded the performance of these people in finishing font tests. The result showed that people with computer glasses had higher work productivity than the other individuals.

Computer glasses have special designs that are not suitable for regular wear. A single vision lens with special power provides both the most comfortable computer vision and the largest vision field. This type of computer lens design reduces the risk of eyestrain, blurred vision and unnatural posture. For people with presbyopia, occupational progressive lenses or lined trifocals with larger intermediate zone provide the right solution. But they are not suitable for driving since the distance zone is narrowed. Occupational bifocal lenses offer a top lens part for intermediate vision and a bottom part for near vision.

Eyestrain can also come from bright office lighting. Anti-reflective coating can be used to reduce glare and UV absorbing coating can be used to block blue light emitted by fluorescent lights.