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What to know about computer eye strain

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Computer eye strain, also known as computer vision syndrome or digital eye strain, often occurs due to excessive screen time.

Keep reading to learn more about the main causes and symptoms of computer eye strain, as well as some exercises and treatment options for relieving it.

Causes

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Viewing digital screens for long periods of time can make a person’s eyes work harder than usual. This can put the eyes under strain, which may lead to the development of vision problems.

According to the American Optometric Association, the eyes are under greater strain when we view screens versus when we read printed words on a page.

This is partly because the letters on the screens are not as sharply defined as printed letters. Besides, many screens have less contrast than the printed page, and because they are affected by reflection and glare.

Other factors also can contribute to computer eye strain. For example, some people view screens from inappropriate distances and angles. This can lead to the adoption of uncomfortable and tense postures, especially if the person has underlying vision problems.

Additionally, one review notes that people’s blinking rate drops dramatically when viewing screens.

However, blinking is an important biological function that keeps the surface of the eyes clean and lubricated. The reduction in blinking may also explain some of the symptoms of computer eye strain.

Common Symptoms

Following are some of the most symptoms of computer eye strain:

  • tired and strained eyes
  • eye discomfort
  • dry, irritated, or burning eyes
  • blurred vision when viewing screens or looking into the distance
  • difficulty refocusing the eyes
  • sensitivity to bright lights
  • headaches
  • neck and shoulder pain

Ways to relieve 

1. Eye Exercises

Certain exercises may help with the prevention and management of computer eye strain.

For example, the American Optometric Association recommends that people follow the 20-20-20 rule. Following this rule means looking at something that is 20 feet away for 20 seconds after every 20 minutes spent looking at a screen.

Learn more about the 20-20-20 rule here.

It might also be helpful to spend a little time each day on some other eye focus exercises. For example, try slowly alternating between focusing on something far away and something nearby.

Another exercise is the figure eight. This involves looking at an area of the floor that is 8 feet away. Then, a person should slowly move their eyes in a figure-eight shape for 30 seconds in one direction, then 30 seconds in the other.

There is some evidence to suggest that these exercises could help with computer eye strain. For example, one study has found that looking at distant objects during breaks from work can significantly reduce the symptoms of computer vision syndrome.

Some scientists have also suggested that blinking exercises may be useful in dealing with computer eye strain. For instance, some people may find that recovering a normal blinking rate when looking at screens helps alleviate some of their symptoms.

2. Environmental Modifications

An article suggests that making environmental modifications could be useful. It also states that controlling light intensity can help reduce glare. In fact, different people require different light intensities to work with. For example, people over the age of 50 years may require twice the amount of light as those in their 20s.

The authors also recommend some optimum workstation arrangements. For instance, an individual’s eyes should be around 35–40 inches (in) from their computer screen. Also, the screen should be about 5–6 below eye level.

3. Undergoing eye exam

Anybody whose computer eye strain symptoms are causing them significant discomfort or impairment should consider seeing a doctor or undergoing an eye exam.

Additionally, it may be worth seeking some information about local vision therapists. Vision therapists can help by providing exercises and training that may help with computer eye strain. These include focus exercises and blinking training.

4. Glasses

Some symptoms of computer eye strain can develop or worsen due to an underlying vision problem. Certain people may not be aware of these problems, but it may be the case if they developed later in life.

If a person suspects an underlying vision problem, they must see an eye specialist. An eye specialist can test an individual’s eyesight. This can help them determine the kinds of glasses or corrective lenses that are appropriate to the person’s needs.

 

Summary

Computer eye strain is a condition that is likely to become more common in the future, as more and more jobs require extended periods of screen time.

There has been comparatively little research into computer eye strain. The same is true of its prevention and management. Perhaps the only certainty about computer eye strain is that reducing screen time is likely to help.

People can try exercises, such as the 20-20-20 rule, but if the problem persists, they should see a doctor or vision therapist. There may be a more serious underlying condition at play.

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What to know about computer eye strain

 

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