Computer Vision Syndrome

117. Computer vision syndrome: digital eye strain, vision loss symptoms, treatment

Computer vision syndrome Self-diagnosis

  • Have blurred vision
  • Objects appear as multiple objects
  • There is eye irritation (tingling, itching)
  • Red and dry eyes
  • I have pain in my neck and back.
  • Have a headache

If you have the above symptoms, you may have computer vision syndrome, and you should be more careful about your eye health when using electronic devices.



Computer vision syndrome occurs when using computers or electronic devices for long periods of time. Typical symptoms include eye irritation, blurred vision, lack of focus, and headaches. The term computer vision syndrome itself may be unfamiliar, but it is easy to understand if you think about the symptoms you have experienced at least once if you have used electronic devices for a long time. In fact, computer vision syndrome, which is said to occur in about 90% of the population who work on a computer for more than 3 hours a day on average, increases discomfort the longer one looks at a digital screen, which causes deterioration of vision and dry eyes.



What is Computer Vision Syndrome (CVS)?

Computer Vision Syndrome, often referred to as digital eye strain, is a common eye condition caused by prolonged screen use. It encompasses a range of symptoms resulting from staring at digital screens such as computers, smartphones, and tablets for extended periods.


Causes of CVS
CVS is primarily caused by prolonged screen time. Factors contributing to CVS include:

  • Extended Focus: Constantly focusing on a screen can strain the eye’s focusing muscles.
  • Blue Light Exposure: Screens emit blue light, which can contribute to eye fatigue.
  • Poor Lighting: Insufficient or excessive lighting can strain the eyes.

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Symptoms of CVS
Recognizing CVS is crucial for early intervention. Symptoms include:

  • Eye fatigue
  • Headaches
  • Blurred vision
  • Dry eyes
  • Neck and shoulder pain

Understanding Eye Coordination and CVS:

CVS not only affects focusing but also eye coordination. Prolonged screen use can disrupt the way our eyes work together, leading to discomfort.

  • Management and Treatment:
    Addressing eye coordination issues often involves vision therapy supervised by a doctor. This therapy helps improve eye alignment and coordination, relieving CVS symptoms.

The Impact of Blue Light on CVS:

Blue light emitted by screens can contribute to eye strain. Understanding this aspect is essential for managing CVS effectively.

  • Blue Light Damage:
    Prolonged exposure to blue light can lead to retinal damage over time, increasing the risk of conditions like diabetic retinopathy.
  • Management Strategies:
    Consider using blue light filters on your devices and taking regular breaks to reduce exposure.

The 20-20-20 Rule:

One effective strategy for managing CVS is the 20-20-20 rule.

  • What is the 20-20-20 Rule?
    Every 20 minutes, take a 20-second break, and focus on an object at least 20 feet away. This simple practice helps relax the eye muscles.

close up woman typing keyboard 2


Self-Treatment for CVS:

You can take steps to alleviate CVS symptoms on your own.

  • Eye Exercises:
    Practicing simple eye exercises like eye rolls and focusing exercises can help relax eye muscles.
  • Blinking Regularly:
    Remind yourself to blink often to keep your eyes moist.

Foods That Support Eye Health:

Your diet can also play a role in managing CVS.

  • Nutrient-Rich Foods:
    Incorporate foods rich in vitamins A, C, and E, as well as omega-3 fatty acids. These nutrients support eye health.

Foods to Avoid:

Certain foods and beverages can exacerbate CVS symptoms.

  • Caffeine and Alcohol:
    Limit your consumption of caffeine and alcohol, as they can contribute to dry eyes and worsen eye strain.

Prevention Methods:

Preventing CVS is more effective than treating it.

  • Proper Ergonomics:
    Ensure your workspace is ergonomically designed, with the monitor at eye level and proper lighting.
  • Regular Eye Exams:
    Schedule regular eye exams with your doctor to detect and address any eye issues early on.
  • Screen Settings:
    Adjust the brightness and font size on your screens to reduce eye strain.
  • Limit Screen Time:
    Aim to limit screen time and take regular breaks to give your eyes a rest.

The Importance of Proper Lighting:

Adequate lighting is essential for preventing CVS.

  • Proper Workspace Lighting:
    Ensure that your workspace is well-lit, and there’s no glare on your screen. A well-lit room reduces eye strain.

Adjusting Screen Settings:

Customizing your screen settings can make a significant difference in managing CVS.

  • Brightness and Contrast:
    Adjust your screen’s brightness and contrast settings to levels that are comfortable for your eyes.
  • Font Size and Color:
    Opt for a font size and color scheme that is easy to read without straining your eyes.

Regular Eye Exams:

Regular check-ups with your eye doctor are essential for early detection and management of CVS.

  • Frequency of Eye Exams:
    Adults should have their eyes examined every one to two years, or as recommended by their doctor.

Limiting Screen Time:

Reducing screen time is one of the most effective ways to prevent CVS.

  • Setting Screen Time Limits:
    Establish daily screen time limits, especially for recreational use, to give your eyes regular breaks.

Using Screen Filters and Blue Light Glasses:

Technology can help protect your eyes from the harmful effects of screens.


young woman sitting floor posing 2


  • Blue Light Filters:
    Consider using screen filters or software that reduce blue light emission from your devices.
  • Blue Light Glasses:
    Blue light-blocking glasses can be worn to reduce eye strain caused by blue light exposure.


Computer Vision Syndrome is a widespread issue, but with awareness and practical steps, you can effectively manage and prevent it. From proper lighting and screen adjustments to regular eye exams and limiting screen time, there are numerous strategies you can implement to protect your eye health. Remember that early intervention and a holistic approach to eye care are key to keeping CVS at bay.



Q: Can computer vision syndrome affect children?
Yes, children can also develop CVS, especially if they spend extended periods on digital devices. It’s crucial to monitor their screen time and encourage breaks.


Q: Are there specific eye drops for CVS relief?
Yes, there are lubricating eye drops available over the counter that can help relieve dry eyes, a common CVS symptom. Consult your doctor for recommendations.


Q: Can CVS lead to permanent vision problems if left untreated?
While CVS itself is not likely to lead to permanent vision problems, it can worsen underlying eye conditions if left untreated. Regular eye exams are crucial for early detection and intervention.


Q: Is there a recommended distance from the screen to reduce eye strain?
To reduce eye strain, maintain a comfortable viewing distance from your screen, typically about 20-24 inches away from your eyes.


Q: Can CVS symptoms be exacerbated by underlying eye conditions?
Yes, underlying eye conditions like astigmatism or farsightedness can make CVS symptoms more severe. It’s essential to address these conditions with your doctor for comprehensive eye care.


Today’s Quiz

Question: What is the recommended frequency for adults to have their eyes examined by a healthcare provider?
a) Every 5 years
b) Every 2 years
c) Every 1 year
d) Only when experiencing eye problems

Answer: c) Every 1 year


Accuracy : 95%.



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