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What is Computer Vision Syndrome?

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Close up of a person wearing glasses, staring at a digital screen.

In today’s digital world, many people spend hours staring at screens for work, school, and entertainment. While digital screens and technology keep us connected and productive, they can also take a toll on our eye health. 

Computer vision syndrome (CVS), also known as digital eye strain, is a condition caused by prolonged screen use and can lead to symptoms like:

  • Eye strain & discomfort
  • Blurred vision
  • Dry & irritated eyes
  • Headaches
  • Neck & shoulder pain

Understanding the causes of CVS and how to prevent it can help protect your vision and overall well-being. If you experience persistent eye discomfort, schedule an eye exam at Eyes on Plainville. Our eye doctors can help provide personalized insights to alleviate digital eye strain.

What Causes Computer Vision Syndrome?

CVS occurs because digital screens force our eyes to work harder than usual. Several factors contribute to this strain.

Poor Screen Ergonomics

Positioning your screen too high, low, or too close can make it harder for your eyes to focus, leading to discomfort and fatigue.

Reduced Blinking

Studies show that people blink less often when using digital devices. Blinking helps keep the eyes lubricated, so a decrease in blinking can lead to dryness and irritation.

Blue Light Exposure

Screens emit blue light, which can contribute to eye strain, disrupt sleep patterns, and increase the risk of retinal damage over time.

High Visual Demand

Reading small text, viewing high-contrast images, or using devices in poor lighting can force your eyes to overwork, leading to fatigue.

Exhausted person rubbing their eyes, while working on laptop and holding their glasses.

Symptoms of Computer Vision Syndrome

CVS can manifest differently, depending on how often and long you use digital devices. Common symptoms include:

  • Tired or burning eyes
  • Blurred or double vision
  • Difficulty refocusing between near & far objects
  • Sensitivity to light
  • Eye redness & dryness
  • Frequent headaches
  • Neck, back, or shoulder pain from poor posture

If these symptoms persist, they can interfere with daily activities and overall eye health. Seeking an eye exam can help determine whether CVS is the cause and how to manage it effectively.

How to Prevent & Manage Computer Vision Syndrome

While screen time is unavoidable for many people, adopting healthy habits can help minimize the impact of CVS.

Follow the 20-20-20 Rule

One of the easiest ways to reduce eye strain is by following the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds. It’s a simple way to give your eyes a break and reduce fatigue.

Adjust Screen Settings

Make small changes to your screen settings to make viewing more comfortable:

  • Increase text size to reduce squinting
  • Adjust brightness to match room lighting
  • Enable dark mode or blue light filters to reduce glare

Optimize Workstation Ergonomics

Proper screen positioning can help reduce strain:

  • Keep screens at least 20 inches away from your eyes
  • Position the top of the screen at or just below eye level
  • Use an adjustable chair to maintain good posture

Blink More & Use Artificial Tears

Since screen use reduces blinking, make a conscious effort to blink more often. If your eyes still feel dry, you can use lubricating eye drops to keep them moist.

Take Frequent Breaks

Extended screen time can be exhausting for your eyes and body. Taking breaks throughout the day can help alleviate symptoms and provide overall wellness benefits.

The Long-Term Effects of Computer Vision Syndrome

While CVS symptoms may seem temporary, prolonged digital eye strain can have lasting effects if not addressed. Over time, excessive screen use can contribute to:

  • Chronic dry eye syndrome: Reduced blinking and exposure to screen glare can weaken the tear film, leading to persistent dryness and discomfort.
  • Increased risk of myopia (nearsightedness): Spending too much time focusing on close-up screens may contribute to the progression of nearsightedness, especially in younger individuals.
  • Sleep disturbances: Blue light exposure in the evening can suppress melatonin production, making it harder to fall asleep and affecting overall sleep quality.
  • Increased eye fatigue & discomfort: Without proper management, digital eye strain can lead to headaches, difficulty focusing, and sensitivity to light.

Taking preventive measures early and maintaining regular eye exams can help reduce the long-term impact of CVS. If you experience ongoing discomfort, your eye doctor can provide tailored solutions to protect your vision for the future.

When to See an Eye Doctor

If symptoms of CVS persist despite lifestyle adjustments, it may be time to see an eye doctor. An optometrist can perform a comprehensive eye exam to assess your vision and recommend treatments such as:

  • Prescription glasses designed for screen use
  • Specialized contact lenses for digital eye strain
  • Treatment for underlying eye conditions like dry eye disease

Routine eye exams with Eyes on Plainville can help detect and manage vision problems early, confirming long-term eye health.

Protect Your Eyes from Digital Strain

Understanding computer vision syndrome and its effects is crucial as screen use becomes more prevalent. Making small adjustments to your screen habits and prioritizing eye health can help you prevent digital eye strain and maintain clear, comfortable vision. 

If you are experiencing ongoing discomfort, schedule an eye exam with Eyes on Plainville to find personalized solutions for your needs. Protect your vision—your eyes deserve it!

Dr. Sabrina Gaan

Written by Dr. Sabrina Gaan

Dr. Sabrina Gaan is the owner of Eyes on Plainville in Plainville, Massachusetts. She has a particular interest in myopia control and dry eye.

She obtained her bachelor’s degree in Biology from San Jose State University while earning her license as a dispensing optician. She decided to move to MA after her VA rotation in Jamaica Plain.

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