Computer vision syndrome- Symptoms and causes

how long does computer vision syndrome last

Nowadays, we live in era where most jobs require staring at computer screens for hours at a time. The computer vision syndrome is a strain on the eyes which happens when you use computer or other digital device for prolonged period.

Every single person who has spent a few hours on the computer has probably felt some of the effects of prolonged use of the computer or other digital technology. Those eye problems which are caused by computer are known as computer vision syndrome (CVS). This is not one specific problem. This type of condition is including a whole range of eye strain and pain.

There are some studies in which are shown that between 50% and 90% of people who work at computer screen, have at least some symptoms. But you should know that not only adults who work on computes can have computer vision syndrome but also children. Children, who use computes during the day at school or who use tablets, also can have problems with their vision, especially if the lighting and their posture are less than ideal.


how long does computer vision syndrome last

Symptoms of the computer vision syndrome are caused by staring at digital devices for a prolonged time throughout the day. The screen overexposure can lead to short – term and long – term vision problems and discomfort. Your eye care professional can diagnose the computer vision syndrome through an eye exam and he or she will pay special attention to how is working your eye and how it responds at computer distance. You may have experienced at least one of the most common symptoms of computer vision syndrome and they include:

  • Neck and shoulder pain
  • Back pain
  • Doubled vision
  • Eye discomfort
  • Eye fatigue
  • Eye exhaustion
  • Tired eyes
  • Itchy eyes
  • Irritated eyes
  • Dry eyes
  • Blurred vision
  • Headaches
  • Eyestrain

Those people who have computer vision syndrome can feel their symptoms differently. Some people are more prone to computer vision syndrome than other people. Also, there are other factors which can lead to the mentioned symptoms, such as improper posture, poor lighting, glare and uncorrected vision needs.


We know that our eye muscles have never evolved to stare at screens or digital devices for longer period. LED screens and computer screens are relatively new inventions so it would take a lot of time, maybe all our lives, before our eyes develop to handle computer use without stresses and strain that we feel today. The blue light and glare are the two most common causes for computer vision syndrome. The uncomfortable effects of the prolonged screen use are leading to many undesired symptoms, such as blurry vision, irritated eyes, headaches, eye fatigue and eye strain. Digital devices and LED lights emit the blue light which is high energy light.

This light is at the end of the visible light spectrum, right next to the UV light. The blue light is short wavelength and it is inversely correlated to energy levels. You should know that the blue light is also known as high – energy visible light. The glare is the second most common cause for the computer vision syndrome. It is the unnecessary feedback which enters in the eye.

This stresses the ciliary muscle in the eyes and it is causing dry and strained eyes and headaches. Many people are sensitive to the glare from the oncoming car lights while driving at night so they are not just affected from the glare which comes from computers. Also, the reduction in how much we blink while we are using our digital devices is cause for computer vision syndrome. We live in era when computers and phones are our non – stop activities so in this way we forget to blink as much as we need. It is known that the bright light from our screens is discouraging blinking.

Blinking is preventing our eyes from drying out so less blinking equates to more itchy and dry eyes. The poor posture and positioning of devices are also causes for the computer vision syndrome. We often put our digital devices in awkward places so this can lead to back, shoulder and neck pain. The computer vision syndrome is making us to feel uncomfortable so we are having less productive days. This is a reason why we must stay away from computes as much as we can.


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