- Digital eye strain is common and usually temporary.
- Take frequent breaks, blink often and set up your screen sensibly.
- Get an eye test, and seek urgent care for sudden vision changes.
The short answer
Looking at screens for hours can leave eyes tired, dry and sore, with blurred vision and headaches. This is often called digital eye strain. It is common and usually improves with better habits, a good set-up and regular eye checks. Screens are not known to cause permanent damage in adults, but the discomfort is real and avoidable.
Common symptoms
- Tired, burning or watery eyes.
- Dryness or a gritty feeling.
- Blurred or double vision at the end of the day.
- Headaches, and neck or shoulder pain.
- Difficulty focusing when you look away from the screen.
Why it happens
When we focus on screens, we blink much less often, so the eyes dry out. The eye muscles also stay in the same close-focus position for long periods, which tires them. Glare, poor lighting and bad posture add to the problem.
The 20-20-20 habit
A widely recommended habit is to look at something about 20 feet (6 metres) away for 20 seconds, every 20 minutes. It gives the focusing muscles a rest. Set a quiet timer or use an app until it becomes a habit. Also stand up and move at least once an hour.
Set up your screen well
| Setting | Suggestion |
|---|---|
| Distance | About an arm’s length, roughly 50 to 70 cm, from the screen |
| Position | Top of the screen at or just below eye level |
| Brightness | Match the brightness of the room, not much brighter or darker |
| Text size | Increase it so you do not squint |
| Glare | Avoid windows or lights reflecting on the screen |
| Night settings | Use a warmer colour setting in the evening |
Care for dry eyes
- Blink fully and often. Consciously blink more when concentrating.
- Drink enough water. See hydration and healthy eating.
- Use preservative-free lubricating drops if a pharmacist or doctor recommends them.
- Avoid pointing fans or air conditioning straight at your face.
- Do not rub your eyes.
Phones, tablets and sleep
Hold phones a little farther from your eyes and avoid scrolling in the dark. Bright light close to bedtime can make it harder to switch off, so reduce screen time before bed. Read sleep and creative work for sleep habits.
Get your eyes tested
An eye test every one to two years, or as advised, checks for changes in vision and for conditions that cause no early symptoms. If you need glasses and do not wear them, screens will feel worse. Tell the optician how much time you spend on screens and what distance you work at.
When to seek urgent help
See an eye doctor immediately if you have sudden loss or blurring of vision, flashes of light, a sudden shower of floating spots, eye pain, redness with reduced vision, or an injury. Do not wait for it to pass. Also read healthy habits for desk workers for posture and break habits.
Quick checklist
- Follow the 20-20-20 habit
- Set the screen at arm’s length and below eye level
- Reduce glare and match brightness to the room
- Blink often and stay hydrated
- Get regular eye tests
- Seek urgent care for sudden vision changes
Key points to remember
Good habits turn a long screen day from a strain into something manageable. This guide is general information and not medical advice. If symptoms continue, see an eye care professional.
