Eye Strain and Dry Eyes: Causes, Relief and When to See a Doctor

Byadmin November 9, 2026

Digital eye strain and dry eyes are common when you spend hours on screens, causing tired, burning, itchy or blurry eyes and headaches. Regular breaks, better screen setup and simple habits usually help, and an eye test can rule out other causes.

QUICK ANSWERFollow the 20-20-20 rule: every 20 minutes, look at something 20 feet (6 metres) away for 20 seconds. Blink often, adjust lighting and screen distance, and use lubricating eye drops if your doctor or pharmacist suggests them. See an eye doctor if symptoms persist or vision changes.
20-20-20
Break rule for screen users
15 – 20
Blinks per minute normally; fewer when staring at screens
Arm’s length
A comfortable distance from a computer screen
1 – 2 yrs
Common interval between eye tests

What Causes Eye Strain and Dry Eyes?

When you focus on a screen you blink less, so the tear film dries and the eye muscles work harder. Glare, poor lighting, a screen that is too close or too far, uncorrected vision and dry or air-conditioned rooms add to the problem. Contact lenses, ageing, some medicines and hormonal changes can also cause dry eyes.

Common Symptoms

BURNBurning or gritty eyesA sandy or stinging feeling.
TIREDTired, heavy eyesEspecially at the end of the day.
BLURBlurred visionThat often clears after blinking or resting.
HEADHeadache and neck strainFrom squinting or poor posture. See migraine vs tension headache.
WATERWatery eyesDry eyes can trigger reflex tearing.

Everyday Habits That Help

DO
  • Take regular screen breaks and blink fully
  • Place the screen slightly below eye level and about an arm’s length away
  • Reduce glare and match screen brightness to the room
  • Increase text size and keep the room humid enough
  • Drink water; see how much water to drink daily
AVOID
  • Long stretches of screen use without breaks
  • Direct air from fans or air conditioners blowing on your eyes
  • Rubbing your eyes
  • Using redness-relieving drops regularly without advice

Poor sleep can worsen eye tiredness; read how poor sleep affects your health.

Eye Drops and Treatment

Preservative-free lubricating drops (artificial tears) can ease dryness. Ask your pharmacist which type suits you, especially if you wear contact lenses or use other eye medicines. Follow the label, avoid touching the bottle tip to your eye and do not share drops. Persistent or severe dry eyes may need a prescription from an eye doctor.

SEE AN EYE DOCTOR IF
  • You have eye pain, marked redness or light sensitivity
  • Your vision changes suddenly or you see flashes or floaters
  • You have discharge or swelling
  • Symptoms do not improve after a few weeks of self-care

Looking for eye care?

Browse our eye and ear care category. Please ask a doctor or pharmacist before using any medicine.

Eye and ear care

Frequently Asked Questions

Do blue light glasses help?

Evidence that they reduce eye strain is limited. Breaks, good lighting and a correct prescription are more effective.

Can screens damage my eyes permanently?

Screen use causes temporary strain but is not known to cause permanent eye damage.

Can children get digital eye strain?

Yes. Set screen time limits and encourage outdoor time and regular eye tests.

More Reading

How poor sleep affects your health →Migraine vs tension headache →How much water should you drink every day? →
Medical note: This article is general information and does not replace an eye examination or personal medical advice.
Sources: American Academy of Ophthalmology (AAO) on digital eye strain and dry eye; National Eye Institute (NEI) on dry eye; NHS guidance on dry eyes.

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