The fastest way to relieve eye strain from a computer screen is the 20-20-20 rule: every 20 minutes, look at something 20 feet (about 6 metres) away for 20 seconds. Add conscious blinking, fix your screen position and lighting, and most people feel a real difference within a few days. No special products needed.

If your eyes burn, itch, or feel heavy by late afternoon, you’re not alone. Most desk workers in the UK spend the bulk of their day staring at screens, and our eyes simply weren’t built for it. The fixes below are free, take minutes, and actually work.

What screen eye strain feels like

You’ll recognise it if you have it:

Eyes that feel dry, gritty, or burny by the afternoon
Blurred vision that clears when you blink
A dull ahe around or behind the eyes
Headaches that build through the working day
Trouble focusing when you look up from the screen
Neck and shoulder tension from hunching toward the monitor

These are the classic signs of digital eye strain. They’re uncomfortable but very common, and they respond well to the fixes below.

The 20-20-20 rule: your first line of defence

The 20-20-20 rule is the simplest eye-strain fix there is. Every 20 minutes, look at something at least 20 feet (6 metres) away for 20 seconds. That’s it.

It works because looking into the distance lets your ciliary muscle, the tiny focusing muscle inside your eye, fully relax. Up close work keeps it squeezed tight for hours. Twenty seconds of distance gazing is like unclenching a fist.

Set a timer on your phone or use a free break-reminder app until it becomes automatic. Pair it with standing up and stretching, and your neck will thank you too.

Fix 1: Get your screen position right

Bad ergonomics is a huge, overlooked cause of eye strain. Here’s the setup to aim for:

The top of your screen should be at or just below eye level
The screen should sit about an arm’s length away (50 to 70 cm)
You should be looking slightly downwards, not up or dead straight
If you use a laptop, a separate keyboard and a laptop stand make a big difference

Looking slightly down means your eyelids cover more of your eye, which slows tear evaporation. It’s a small change with a surprisingly big effect.

Fix 2: Kill the glare

Glare forces your eyes to work harder to read the screen. Check for:

Windows behind or beside you reflecting on the screen, turn the monitor or close blinds
Overhead lights bouncing off the display, tilt the screen slightly down
A glossy screen in a bright room, a cheap matte screen filter fixes this

Your screen brightness should roughly match the room around it. If your screen looks like a glowing rectangle in a dim room, turn the brightness down. Most people run their screens far brighter than they need to.

Fix 3: Sort your lighting

The ideal setup is soft, even lighting with no harsh contrasts. A desk lamp placed behind your monitor, lighting the wall rather than the screen, works well. Avoid working in a dark room with only the screen lit, and avoid sitting with your back to a bright window.

If you work from home in a spare room with one harsh ceiling light, a £15 desk lamp is one of the best eye-strain purchases you can make.

Fix 4: Blink more, and consider drops

Remember the blink problem: screens cut your blink rate dramatically. Make a habit of slow, full blinks every so often, especially when you feel dryness creeping in.

If blinking isn’t enough, artificial tears from the chemist can help. These are simple lubricating eye drops, no prescription needed, and they’re fine for occasional use. Keep a bottle at your desk. If you find yourself reaching for them every single day, that’s a sign to book an eye test rather than just treating the symptom.

The fixes at a glance

Fix	What to do	Why it works
20-20-20 rule	Look 6m away for 20 seconds, every 20 minutes	Relaxes the focusing muscle
Screen position	Top of screen at eye level, arm’s length away	Less strain, slower tear evaporation
Kill glare	Blinds, screen angle, matte filter	Eyes work less hard to read
Better lighting	Soft lamp behind screen, no harsh contrast	Pupils stay relaxed
Blink and drops	Slow full blinks, artificial tears if needed	Keeps the tear film intact

When to get your eyes tested

If you’ve tried all of this for two weeks and your eyes still feel awful, get an eye test. You might need glasses, or your current prescription might be out of date. In the UK you’re entitled to an NHS-funded sight test if you’re under 16, over 60, or have certain medical conditions, and many employers contribute toward eye tests for screen workers. It’s worth asking.

FAQs

How long does it take for eye strain to go away?

With proper breaks and setup fixes, most people feel better within a few days. If it doesn’t improve after two weeks of good habits, book an eye test.

Are blue light glasses worth buying for screen strain?

Probably not. There’s no solid evidence they reduce eye strain. The fixes in this article, breaks, blinking, and setup, have far more behind them.

Can I use eye drops every day for screen strain?

Occasional use of lubricating drops is fine. Daily reliance suggests an underlying issue like dry eye or an old prescription, so see your optician.

When should I see an optician about screen eye strain?

If symptoms persist despite the fixes above, if your vision changes, or if you have eye pain, ongoing redness, or sudden vision changes. Don’t wait on sudden changes.

This article is for general information only and does not replace professional medical advice. If you have ongoing concerns, see your optician or GP.