Digital Eye Strain: 9 Practical Tips, Including the 20-20-20 Rule
Tired, dry or blurry eyes after a day on screens are very common, and usually easy to improve. Here are nine evidence-based tips from eye health authorities.
If your eyes feel achy, dry or blurry after hours on a laptop or phone, you are far from alone. The American Academy of Ophthalmology (AAO) describes this as digital eye strain. The good news is that it does not cause lasting damage to the eyes, and a few simple changes make a big difference.
Why screens tire your eyes
Three main things happen when you focus on a screen for a long time:
- You blink less. According to the AAO, people normally blink about 15 times a minute, but only 5 to 7 times a minute while looking at a screen. Fewer blinks means the tear film evaporates and your eyes feel dry and gritty.
- Your focusing muscles work non-stop. Holding focus at a fixed, close distance for long periods can tire the muscles that adjust your eye’s lens.
- Glare and contrast. Bright screens in dim rooms, reflections and small text all make your eyes work harder.
Common symptoms include blurred vision, achy or uncomfortable eyes, and dry eyes that tear or sting.
Tip 1: Follow the 20-20-20 rule
This is the single most useful habit. The CDC and National Eye Institute both recommend it: every 20 minutes, look at something about 20 feet (6 metres) away for 20 seconds. It relaxes your focusing muscles and usually prompts you to blink. Set a timer or use a break-reminder app until it becomes automatic.
Tip 2: Blink on purpose
The AAO suggests consciously blinking more often. Some people find it helps to put a sticky note on their monitor as a reminder. Try a few slow, full blinks every time you finish a task or send an email.
Tip 3: Position your screen correctly
Sit about 25 inches (roughly an arm’s length) from your computer screen, with your gaze angled slightly downward, as the AAO recommends. A slight downward gaze means your eyelids cover more of the eye surface, which reduces tear evaporation.
Tip 4: Match your screen brightness to the room
A screen that is much brighter or dimmer than its surroundings forces your eyes to keep adjusting. Adjust brightness so it roughly matches the room, and increase text size and contrast if you find yourself squinting.
Tip 5: Reduce glare
Position your screen so windows are to the side rather than behind or directly in front of you. A matte screen filter can help if reflections are unavoidable. Avoid working in a dark room lit only by the screen.
Tip 6: Use artificial tears if your eyes feel dry
The AAO lists artificial tears as a way to refresh dry eyes during screen use. Preservative-free drops are often recommended for frequent use. If dryness persists despite these steps, see an eye care professional, as it may be dry eye disease.
Tip 7: Get your prescription checked
Uncorrected vision problems, even minor ones, make eye strain worse. If you wear glasses, make sure your prescription is up to date. The AAO notes that some people benefit from glasses designed for computer distance. These are different from “blue light blocking” glasses, which the AAO does not recommend for eye strain. Read more in our blue light article.
Tip 8: Mind the air around you
Air conditioning, heaters and fans blowing toward your face dry the eyes faster. Redirect vents and consider a humidifier in very dry environments.
Tip 9: Take longer breaks and protect your sleep
In addition to 20-second breaks, stand up and look away from screens for a few minutes every hour or two. In the evening, the AAO suggests limiting screen use in the two to three hours before bed and using night-time settings, because screen light can make it harder to fall asleep. Good sleep also helps your eyes recover.
Supplement curious? Interested in an eye supplement as well? Read our independent VisiVra review first, including the full label, the safety notes and what the proprietary blend leaves unclear.
Do supplements help eye strain?
Some small studies suggest that astaxanthin may reduce feelings of eye fatigue, and it is one of the ingredients in VisiVra. However, a 2020 review in Marine Drugs concluded that longer clinical trials are needed. The habits above are free, well supported and should come first. You can read our astaxanthin evidence review for more detail.
When to see an eye doctor
- Symptoms persist even after improving your screen habits.
- You get frequent headaches when reading or using screens.
- You notice double vision, or your vision does not clear after breaks.
- Your eyes are red, painful or sensitive to light.
Any sudden change in vision needs prompt attention.
Quick checklist
| Habit | Done? |
|---|---|
| 20-20-20 breaks | ☐ |
| Conscious blinking | ☐ |
| Screen at arm’s length, slightly below eye level | ☐ |
| Brightness matched to room | ☐ |
| No glare from windows | ☐ |
| Up-to-date prescription | ☐ |
| Screens off 2–3 hours before bed | ☐ |
Frequently asked questions
Can digital eye strain cause permanent damage?
According to the American Academy of Ophthalmology, digital eye strain does not cause lasting damage.
Do blue light glasses help eye strain?
The AAO says studies have not shown that blue light glasses improve digital eye strain symptoms and does not recommend them for computer use.
How far should my screen be?
The AAO recommends about 25 inches, roughly an arm’s length, with your gaze slightly downward.
Sources
- American Academy of Ophthalmology – Computers, Digital Devices, and Eye Strain
- American Academy of Ophthalmology – Should You Be Worried About Blue Light?
- CDC – Preventing Vision Loss
- National Eye Institute – Keep Your Eyes Healthy
- Giannaccare et al. – Clinical Applications of Astaxanthin in Ocular Diseases, Marine Drugs 2020
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Read our medical disclaimer.