Eye Care Blog: Tips, Trends & Insights | OAO Ontario

Digital Eye Strain (Computer Vision Syndrome)

Written by Dr. Angela Yoon | Jan 30, 2026 10:29:39 PM

What It Is 

Digital Eye Strain, also known as Computer Vision Syndrome, refers to a group of vision and eye-related problems caused by prolonged computer, tablet, or smartphone use. 
Even people with perfect vision may experience blurred vision, dry eyes, or headaches when using screens for extended periods. 

 

Who It Affects / Risk Factors 

  • People who spend more than two hours per day on digital screens 
  • Those with uncorrected refractive errors such as myopia, hyperopia, or astigmatism 
  • Individuals wearing multifocal lenses 
  • Office workers or students with improper workstation setup 
  • Anyone exposed to harsh lighting or glare 

 

Symptoms to Watch For 

  • Blurred or double vision 👓 
  • Eyestrain or eye fatigue 😣 
  • Headaches or neck/shoulder pain 💢 
  • Dryness, tearing, or irritation 💧 
  • Excessive blinking or squinting 👁️ 

 

How It’s Diagnosed 

Your optometrist will conduct a comprehensive eye exam and assess: 

  • The distance from your eyes to your screen 
  • Your workstation setup and lighting conditions 
  • How many hours a day you use digital devices 
  • The type of eyewear or lenses you use 

Advanced imaging such as OCT scans or refraction tests may be used to rule out other vision or health problems. 

 

Treatment & Management 

Your optometrist can recommend personalized strategies and eyewear to improve comfort and prevent strain: 

  • Computer or office lenses designed for intermediate viewing distances 
  • Blue light–blocking coatings to reduce glare and improve contrast 
  • Lubricating drops or gels to relieve dryness 
  • Adjusting your screen height and brightness to suit your environment 
  • Ergonomic tips for posture and lighting placement 

 

Tips to Prevent Digital Eye Strain 

  • Keep your screen an arm’s length away and slightly below eye level. 
  • Match screen brightness to your surroundings and reduce glare using filters or dimmer switches. 
  • Wipe dust and fingerprints off your screen regularly. 
  • Use a clipboard or document holder to align paper and screen distance. 
  • Follow the 20-20-20 rule: every 20 minutes, look 20 feet away for 20 seconds. 
  • Remember to blink — screen use reduces blinking from 12 to 5 times per minute! 
  • Discuss blue light protection and dry eye treatment options with your optometrist. 

 

When to See Your Optometrist 

Book an eye exam if you experience: 

  • Persistent headaches or blurred vision 
  • Eye irritation, tearing, or dryness 
  • Difficulty focusing between near and far distances 
    These may be signs of Digital Eye Strain — or an underlying eye condition requiring professional care.

Book an Eye Exam - Your optometrist can help you reduce eye strain, protect your vision, and stay comfortable at your screen.