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Low Vision – What is Computer Vision Syndrome



computer vision syndrome (CVS) is a group of eye and vision-related problems that result from prolonged computer use. Many people experience eye discomfort and vision problems when viewing a computer screen for a longer period, with the level of discomfort with the increasing amount of computer use

The most common symptoms associated with computer vision syndrome include :.

  • eyestrain
  • headache
  • blurred
  • dry eye
  • neck and shoulder pain

These symptoms may be caused by:

  • poor lighting
  • flash on a computer screen
  • improper viewing distances
  • poor seating posture
  • uncorrected vision problems

View computer screen often makes eyes work harder. As such, the unique characteristics and high visual demands of computer see many individuals susceptible to the development of vision symptoms. The extent to which people experience visual symptoms often at the level of visual ability and time spent looking at a computer screen. Many of the visual symptoms experienced by computer users are temporary and will decrease after stopping the computer work. Some people hardly continue my visual skills such as blurred distance vision, even after cessation of work on the computer. If nothing is done to address the cause of the problem, the symptoms will continue to recur and may become worse with the future of computing.

uncorrected vision problems, such as farsightedness and astigmatism, inadequate eye focusing or eye coordination abilities, and aging changes in the eyes, such as presbyopia, can increase the severity of the symptoms of CVS. Uncorrected vision problems can contribute to the development of visual symptoms when using a computer.

prevent or reduce vision problems associated with CVS involves taking steps to control lighting and flash on a computer screen, bring good distance and posture for computer viewing, and ensure that even minor vision problems are properly adjusted.


Computer Vision Syndrome


Almost everyone these days is to use your computer for work or play. We spend a lot of time staring at computer screens and our people are experiencing vision problems. The eyestrain, blurred vision and headaches that often come with a computer called Computer Vision Syndrome (CVS).

Research suggests that up to 80% of computer users have vision problems or CVS. Many computer users do not associate their symptoms with the time they spend on the computer. Some assume that their headaches or eyestrain from work stress or tired, their eyes are expected part of their work. Computer glasses are special glasses designed for computer environments. They will make your computer time more productive and comfortable.

One of the causes of CVS is because the nature of text and graphics on a computer screen. The image on the monitor is equipped with pixels of light, are glowing dots are the brightest in their center with their luminance fall to zero to the edge of the bell-shaped fashion. Print on paper usually has a sharp, high contrast edges.

The human visual cortex has special cells that are very good at recognizing high contrast edges as printed on paper. These cells are an important basis for our visual perception system, because much of what we consider to be a “thing” in nature is shaped by high-contrast edges. Our eyes can lock in sharp contrast edges but have a difficult time maintaining focus accurately on pixel-created edge.

Looking at the computer screen, have our eyes have muscles attempt to focus on the distance and will remain to keep the forces as long as we are looking at the screen. In fact, what happens is concentrating efforts relaxes gradually and then return focus to the plane of the screen. Over time, the muscles fatigue and CVS symptoms occur

Computer Ergonomics :.

  • Description in most offices is too bright for comfortable computing. If you can reduce lighting anything that will help. Watch the flash from doors, windows or reflected glare from the surface. If you wear glasses when working on the computer they should have a reflective coating on them.
  • To minimize stress and eyestrain, the screen should be 20-30 inches away from your eyes. You should be looking slightly down at 15 degree angle. Use an adjustable chair with full Back Support
  • In many offices, the air is dry due to the air conditioning and heater. When eyes become dry vision fades and eyes feel irritated. To make it worse, when we stare at the computer our rate of blinking slowly, wiped his eyes even more. Lubricating eye drops often help.

If you are experiencing eyestrain, blurred vision and headaches related to computer use, see an eye doctor. Why put up with eyestrain, blurred vision and headaches if you do not?


Computer Vision Syndrome


You’ve probably experienced the symptoms of computer vision syndrome (CVS) after a long day working on your computer; a stiff and sore neck, strained eyes are dry and Ache bit, and possibly headaches. If you find one or more of these symptoms, you are not alone; an estimated 50 to 90 percent of adults who work in the computer experience CVS. The good news is that you do not have to suffer. With a combination of creating more “eyes friendly” environment and professional testing and analysis of optometrist, you can reduce the effects of CVS and work more comfortably with higher productivity.


CVS is a result of repetitive motion strain watch the screen for a long time. When you spend a long time looking at a computer screen, the muscles of the eyes, neck and shoulders can become tired, cause pain and discomfort. Other factors that can contribute to CVS are:

– poor lighting

– flash on the computer screen

– uncorrected vision problems

– Flicker in CRT monitors

– Poor posture

– Improper distance from the screen


Most symptoms of CVS are unclear and / or double vision, artificial myopia (a temporary inability to concentrate properly on distant objects), and squinting. Other indicators of CVS include dry eyes, pain in the neck and shoulders, headaches, dizziness or nausea. If left untreated, these symptoms will not improve and can only worsen.

Making your Workspace Eye Friendly

There are a number of ways you can make your workspace more friendly and easy on the eyes. First, position your monitor so that there is no flash off (eg reflected sun glare through the windows) or inside the light source (overhead lighting or lighting in your work area). If it is impossible to rearrange workspace, install flash filter on your monitor. Next, make sure your display is 20 to 28 inches away from your eyes. Screen should also be 15 to 20 degrees below eye level. In addition, make sure you have a comfortable chair that helps you maintain good posture. If you’re still using an older CRT monitor, consider upgrading to a new LCD screen that is more “eye friendly.” Volatility and the resolution of the older CRT monitors can cause considerable eye strain and susceptible to flash and LCD screens. Finally, take a break. Every twenty minutes stop and look away from the screen and allow your eyes to relax and refocus. And do not forget to blink.

How Optometrist phone can help you

Next Optometrist your appointment, be sure to mention any symptoms of CVS you think you may be experiencing. Ask your Optometrist to recommend ways to help you with your CVS, and if the computer glasses could be an option for you. Your “regular” glasses (for reading or driving) are often not optimal to use a computer, especially if you use bifocals, trifocals or progressive lenses. Optometrist may prescribe glasses computer specifically designed to correct and improve vision for proper focus. In addition, computer glasses should have an anti-reflective coating, which can go a long way to reduce glare. Finally, computer glasses can also be colored to close “blue.” Blue light has a short wavelength light computer monitors emit related eye fatigue.

With all the options and solutions available to you, do not suffer unnecessarily. Talk to your optometrist about CVS and get rid of the pain and discomfort that staring at a computer screen can cause.