What is CVS (computer vision syndrome)?
Some experts believe that anyone who looks at the computer screen for more than two hours a day has probably experienced to some extent computer vision (CVS) . According to the American optometric association, there are blurred vision, itchy dry eyes, headaches and neck pain of only a few symptoms. The problem is the difference between images on the computer screen and the real world images. The human eye is designed to focus on objects in the real world that clearly define the boundaries from nature. Even printing on the page, for example, shows sharp boundaries and high contrast that reaches to the edges of the letters.
On the contrary, the computer screen creates letters by grouping dots or colored pixels closely together. The approach of a computer letter reveals that rounded or curved edges are not smooth and solid but irregular and indistinct. Eyes have a heavier time to maintain a computer display for this reason and involuntarily drift to what thermed is "point of theočka. "You can compare it to" go into dazing "or" stare at nothing ", but on the computer it happens briefly and repeatedly as a trunk eyes to focus again. The trunk increases as it goes more hours, leading to fatigue and CVS.
Many other CVS symptoms are by -products of this tendency to attract computer letters for better focus. When your eyes focus on focus, they tend to flash less, resulting in dryness and itching. Burning, tearing, headaches and light sensitivity are other symptoms of CVS. Two other contributors to CVS are glare and if you use a cathode beam monitor (CRT), ultraviolet (UV) radiation. Experts now believe that glare and excessive exposure to UV rays can contribute to cataracts as we age.
Fortunately, there are steps that can take to fight CVS. Many Optometristůs today offer computer vision tests. This can help people who also do not have a repaired vision. If you suffer from CVS, this test will let you know if you would benefit from a simple enlargement or slight regulation. Proprietary computer glasses can alleviate a large part of CVS fatigue.It is important to realize that computers are sitting remotely, that reading and reading bifocals are not intended for repair because the reading material is held closer. The display also sits higher than reading the material held in the hands, making it difficult to use bifocals without reducing the head back and creating the arm and neck voltage. By testing computer vision, your optometrist can provide you with a perfect prescription for using a computer to reduce CVS symptoms. When the display is brought to a clearer focus, the eye muscles will not have to work so hard.
Computer glasses, whether they contain a prescription or not, can also be polarized to eliminate the view. If you are using CRTMonitus, consider an upgrade to LCD display or flat panel. These displays do not emit UV radiation.If you have to use the CRT monitor, enter the UV blocking filters to the computer glasses.
The filter display filter can also help reduce CVS symptoms by reducing glare and improving contrast. However, Matte Anti-Glare Screen results in the screen less fresh distraction from the harsh surface. A smooth anti-glare screen that uses a chemical coating to cut the lean to less view, but keeps a sharper picture. This type of computer screen against Glor, along with Glor glasses, could achieve the best result. Filter screens designed for use with CRT monitors can also block a large part of the UV rays.
According to some estimates, CVS affects approximately 125 million Americans. Since more people spend longer hours on computers, computer glasses can become as common as sunglasses. If they provide relief from CVS, onijsou investment that is worth producing.