Symptom

Eye strain

Uncomfortable but not harmful

Clinically reviewed · Last reviewed 2026-06-13

When to get it checked

  • Persistent headaches that do not improve with breaks and good screen setup
  • Double vision or eye strain with one eye drifting
  • Eye strain with significant blurring that does not clear
  • Strain that started suddenly or comes with eye pain

Common causes

Eye strain usually comes from prolonged focusing, an uncorrected prescription, or a dry eye surface.

Digital eye strain Long screen sessions with reduced blinking tire the eyes. Long-sightedness Uncorrected long sight makes the eyes work harder up close. Astigmatism An uneven focus forces constant fine adjustment. Presbyopia Age-related loss of near focus strains the eyes for close work. Dry eye A dry surface makes the eyes feel tired and uncomfortable.

What can help

  • Follow the 20-20-20 rule and take regular screen breaks
  • Have an up-to-date eye test, as the right glasses often fix strain
  • Blink fully, use lubricating drops, and improve lighting and screen position

Frequently asked questions

What causes eye strain?

Eye strain usually comes from long screen or close work, an uncorrected glasses prescription, or dry eye. It is uncomfortable but does not damage the eyes.

How do I relieve eye strain?

Take regular breaks using the 20-20-20 rule, blink fully and use lubricating drops, improve lighting, and have an eye test to make sure your prescription is correct.

Can eye strain cause headaches?

Yes. Tired focusing muscles and squinting can trigger headaches. If headaches persist despite breaks and the right glasses, see a clinician.