Computer Vision Syndrome

Introduction to Computer Vision Syndrome

Computer Vision Syndrome is also known as Digital Eye Strain, is a complicated eye problem related to computer use. It is a vision-related problem that results from excessive computer, tablet, cell phone, smartphone, and e-reader use. The more the usage of the digital screen, the more will be the problems.

Computers are now an indispensable part of our life. Though this advancement in science and technology has brought a vast change in our lives, with this, certain health issues have also occurred. The shift from paper to the computer has been so fast and powerful that the concern behind the usage of the computer was not taken so seriously. And, our eye has not adapted to this new demand to work at near in a visual atmosphere rather than paper, and in a stressful work environment for extensive hours.

What is Computer Vision Syndrome (CVS)?

CVS is characterized by symptoms that result from interaction with a computer display or its environs. When our eye or body can’t adapt to such an environment or the demand at near work exceeds the natural ability of our eye to perform a job without any discomfort leads to a computer vision syndrome.

Near work refers to all kinds of self-illuminating PCs, mobile phones, and tablets that bring everything to our hands.

Common Symptoms of CVS?

The most common symptoms include:

  • Eyestrain
  • Headaches
  • Dryness of eyes
  • Irritated eyes
  • Contact lens discomfort
  • Blurred vision
  • Difficulty in focusing on far and near objects
  • Tired eyes
  • Redness of the eyes
  • Double vision
  • Photophobia
  • Glare and flicker

Neck pain, shoulder pain, and backache are some of the common symptoms of computer vision syndrome.

Who can be affected by CVS?

Approx. 75% of people work on computers in their offices. Even in government sector companies, or government offices also, computer use is mandatory. A very less amount of work is done using paper and pen. Thus, you can assume how much the population of our country is affected by Computer Vision Syndrome (CVS). It affects mostly those who work more than 3 to 4 hours a day with computers or digital screens. Moreover, children who:

Work on the computer for more than 3 to 4 hours a day

Have strain at computer work

Experience all of the symptoms of CVS

Experience stressful situations while working on computers

Detection of CVS

Computer Vision Syndrome is a little different from the other eye problems. An ophthalmologist often focuses on the distance vision (6m and beyond) and near vision (35 to 40 cm). Whereas a normal professional has a unique working distance to the monitor. Due to such difference, the examination doesn’t show the actual environmental conditions.

Some common testings that are required to detect CVS include:


  • Refractive error correction for computer workstations
  • Eye health evaluation
  • Analysis of visual functions
  • Evaluation of arrangement of the computer workstation
  • Evaluation of lighting and reflections


In India, there are a few clinics to treat computer vision syndrome (CVS). KomalEye care is one of them. Here in KomalEyecare, all your symptoms in computer vision will be recognized and treated with the utmost care and using advanced techniques.


Most frequent questions and answers about Computer Vision Syndrome

There are 40 million people in India who uses a computer or laptop for their personal, or professional use, and 80% of them suffer from CVS. Among them, more than 70-90% of adults report using digital devices such as laptops, computers, desktop, or tablets more than two hours a day. Unfortunately, adults aren’t the only victims who are affected, children are more vulnerable to the condition.

CVS is caused by repetitive or prolonged nature of computer work that puts high pressure on our eye forming more demands of computer-generated images on our visual systems. The luminous elements that create images on a computer screen are brightest at the centre, thus making it more difficult for our eyes to focus accurately on computer-generated images.

Moreover, nearly 80% of computer users would be found with bad postural habits and stay in this posture for a longer period, causing muscle strain, back pain, fatigues, and headaches.

A glare filter can somewhat help you to prevent CVS, but it is not the sole solution. Filters can reduce glare from outdoor sunlight or overhead lights that reflect on your computer screen. But that cannot prevent the vision problems due to constantly focusing the eye on the computer screens while working on it or studying.

Anti-reflective coating can prevent glare from light reflecting off the surfaces of your eye glasses. So, AR coatings can be helpful, but it doesn’t solve the primary cause of CVS. However, special coatings may protect your eyes from major eye problems, caused by ultra-blue rays. This high-energy visible (HEV) light exposure can reach deep into your eyes and may damage your retina.

As per the survey, those who do not experience any eye problems or symptoms of CVS still may benefit from wearing computer eyewear. An eye test with a computer vision specialist can assist you if the computer glasses might be helpful for you or not.

No, there is no such evidence that wearing computer eyeglasses can cause serious changes like nearsightedness (myopia), farsightedness, or astigmatism. Reducing focusing stress with special lenses for reading or computer use may slow the progression of myopia in school-going children.

Ergonomics can be defined as the science of arranging things people use in their working environment in the most efficient manner possible. Following these steps can prevent and treat your eyes from CVS. However, ergonomics alone cannot fix a vision problem. It can be achieved with prescribed eyewear.