Digital Eye Strain (Computer Vision Syndrome)

Digital eye strain, also known as computer vision syndrome (CVS), is a group of visual and musculoskeletal symptoms associated with prolonged use of digital screens.

Common Symptoms

  • Eye fatigue or heaviness
  • Blurred or fluctuating vision
  • Dryness, burning, or irritation
  • Headaches during or after screen use
  • Neck and shoulder discomfort

Prevention and The 20-20-20 Rule

Decreased blinking while focusing on screens leads to tear film instability. Management requires behavioral changes:

  • The 20-20-20 Rule: Every 20 minutes, look at an object 20 feet away for at least 20 seconds.
  • Maintain screen distance of approximately 50–70 cm.
  • Position the top of the screen slightly below eye level.
  • Consider artificial tears if dryness persists.

If you are unsure whether your symptoms relate to screen time or a need for glasses, take our Interactive Strain Test.

Medical Disclaimer

This article is provided for educational and informational purposes only. CorrectLens does not provide medical diagnosis, treatment, or prescription services.

Online vision tests measure visual acuity (clarity of sight) and basic visual performance. They cannot detect eye diseases such as glaucoma, cataracts, macular degeneration, retinal disorders, or neurological conditions.

A comprehensive eye examination performed by a licensed eye care professional is required for medical diagnosis and prescription accuracy.

Medical References