What is it?

Digital eye strain (sometimes called computer vision syndrome) is the general discomfort that shows up after extended screen use — on a phone, computer, or tablet. It isn't usually a sign of lasting eye damage, but it's a very real, very common source of daily discomfort worth actively managing.

Common symptoms

  • Eye fatigue or tiredness
  • Dryness or a burning feeling
  • Headaches
  • Blurred vision, especially after long sessions
  • Neck, shoulder, or back discomfort from posture while viewing a screen

Causes & risk factors

  • Reduced blink rate while focused on a screen (often less than half the normal rate)
  • Glare or poor lighting around the screen
  • Viewing distance or posture that isn't well set up
  • An uncorrected or outdated glasses prescription

When to see a doctor

Try the everyday adjustments below first. If symptoms persist despite them, it's worth an eye exam — partly to address the strain, and partly to rule out an underlying uncorrected vision problem making it worse.

See an eye doctor promptly if you have sudden vision loss, sudden eye pain, or a sudden increase in flashes or floaters — these can signal something that needs urgent attention.

What treatment generally involves

Relief generally comes from a combination of habit changes (see below) and, for some people, an updated glasses prescription or lenses designed for screen distances. Blue-light-filtering lenses are a comfort option some people find helpful, though they're best thought of as one tool among several rather than a fix on their own.

Everyday habits that help

  • Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds
  • Blink deliberately and more often during screen use
  • Position screens slightly below eye level, roughly an arm's length away
  • Reduce glare with good room lighting and screen brightness matched to your surroundings
This page is for general educational purposes and does not replace a professional eye examination or personal medical advice. Please consult a qualified ophthalmologist for diagnosis or treatment tailored to you.