10 Tips to Reduce Eye Strain from Screens
Digital eye strain affects an estimated 65% of people who use screens regularly. Most of it is preventable. Here are ten evidence-backed changes you can make today — ranked roughly from easiest to implement to most impactful.
Follow the 20-20-20 rule
Every 20 minutes, look at something 20 feet (about 6 metres) away for 20 seconds. This gives your focusing muscles a chance to relax. It sounds simple because it is — the evidence behind it is solid, and it costs nothing. The hard part is remembering to do it. Use a timer or app to build the habit.
Blink more — consciously
When concentrating on a screen, the average blink rate drops from 15–20 blinks per minute to as low as 3–5. Blinking is what spreads the tear film across your eye surface. Without it, the surface dries out and irritates rapidly. Make a conscious effort to blink fully and regularly during focus work — not half-blinks, but complete ones.
Position your screen at arm's length
Optimal screen distance is 50–70cm (roughly arm's length). Closer than this and your eyes work harder to focus — a constant, low-level effort that accumulates into fatigue over hours. If you're regularly leaning in, your font size may be too small; increase it rather than moving closer.
Keep the screen top at or below eye level
Looking slightly downward (10–20 degrees below horizontal) is the natural resting position for the eyes. Screens positioned too high force you to hold your eyes wide open, which speeds up tear evaporation and causes dryness. Lower your monitor or raise your chair so you're looking slightly down at your screen.
Match screen brightness to your environment
A screen that's significantly brighter or darker than the surrounding room forces your eyes to constantly adjust. In a dim room, reduce screen brightness. In daylight, increase it. Enable auto-brightness if your device supports it. The goal is that your screen should feel like a window, not a torch.
Reduce glare and reflections
Glare from windows or overhead lights reflecting off your screen causes your eyes to work harder to read through the interference. Reposition your screen so windows are to the side rather than in front or behind. Anti-glare screen filters are inexpensive and genuinely help. Matte screen finishes are better than glossy for this reason.
Use night mode in the evening
Blue-light heavy screens in the evening suppress melatonin and disrupt sleep — and poor sleep directly worsens eye strain the next day. Enable Night Shift, Night Light, or f.lux from around 7–8pm. This shifts the display towards warmer tones, reducing blue light without darkening the screen.
Use lubricating eye drops if needed
If your eyes feel gritty, burning, or dry after screen use, preservative-free lubricating drops can provide significant relief. They're available over the counter at any pharmacy. Use them before long sessions as well as during — don't wait until you're symptomatic. Avoid redness-relief drops (vasoconstrictors) regularly; they don't treat the underlying cause.
Check your prescription
Uncorrected or incorrectly corrected vision is a major, underdiagnosed cause of eye strain. If you wear glasses, when did you last have an eye test? Using the wrong prescription — even slightly — means your eyes are constantly compensating. This is especially common in people over 40 as near vision changes. An eye test every two years is the baseline recommendation.
Track your blink rate in real time
Most of the above tips require active effort and habit formation. Tracking your blink rate removes the guesswork — you get live feedback on what your eyes are actually doing throughout the day, rather than relying on self-monitoring. Tools like blink! use your Mac camera to count blinks in real time and alert you when your rate drops to dangerous levels.
blink! runs on your Mac and tracks your blink rate in real time using your camera. When it drops below a healthy threshold, you get a gentle nudge — so you don't have to think about blinking at all.
Get blink! — £14.99