The fastest ways to ease eye strain right now

Eye strain from screen time comes from three things: your screen is too bright, you are not blinking enough, and your eyes are working too hard to focus. You can reduce strain in minutes by adjusting your screen brightness to match your room, moving your monitor so the top of the screen is at or slightly below eye level, and taking a 20-second break every 20 minutes to look at something at least 20 feet away. These three changes stop most strain before it becomes a headache or blurred vision.

The reason strain happens is that your eyes focus harder on screens than on printed text, and you blink about 66 percent less when reading a screen. Your tear film — the thin layer of moisture on your eye — breaks down faster when you blink less, leaving your eyes dry and tired. Brightness and glare force your eye muscles to work harder to see clearly. Moving your eyes back and forth between your screen and documents on your desk adds to the load.

Key Takeaways

  • Position your monitor so the top of the screen sits at or just below eye level, about 20 to 26 inches from your face.
  • Lower your screen brightness to match the light in your room, and reduce blue light in the evening by using your device's night mode or built-in filter.
  • Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds to let your eye muscles relax.
  • Blink deliberately and fully when working on screen, or use artificial tears if your eyes feel dry.
  • Anti-glare screen filters and blue-light glasses can help, but they work best alongside the other changes, not instead of them.

Adjust your monitor position and distance

Your monitor should sit 20 to 26 inches from your eyes — roughly an arm's length away. The top of the screen should be at eye level or slightly below, so you are looking down at a small angle rather than straight ahead or up. This angle reduces the surface area of your eye that is exposed to air, which slows tear evaporation and keeps your eyes more moist.

If your monitor is too high, you tilt your head back and open your eyes wider, which dries them out faster. If it is too low, you lean forward and strain your neck, which creates tension that radiates into your eyes and head. Laptop screens are almost always too low — if you use a laptop regularly, place it on a stand or books so the screen is at the right height, and use an external keyboard and mouse so you do not have to hunch.

The distance matters because screens that are too close force your eyes to focus harder, and screens that are too far make you lean forward to read. If you wear glasses or contacts, make sure your prescription is current and correct for screen distance. Many people have a prescription that works for reading printed text but not for screens, which can cause strain even when everything else is set up correctly.

Control brightness and reduce blue light

Your screen should be roughly as bright as the light around it. If your screen is much brighter than your room, your pupils shrink and your eyes work harder to see the screen clearly. If your room is much brighter than your screen, you strain to read the text. Most devices let you adjust brightness in the settings or with keyboard shortcuts — on Windows, use the brightness slider in the quick settings panel; on Mac, use the Control Center; on phones and tablets, swipe down from the top and adjust the brightness slider.

Blue light from screens can make it harder to fall asleep if you work in the evening, and some research suggests it may contribute to eye strain, though the evidence is mixed. Most devices have a night mode or blue light filter that you can turn on automatically at sunset. On Windows, this is called Night Light and is found in Settings under System. On Mac, it is called Night Shift and is in System Settings under Displays. On phones and tablets, look for Night Light, Night Shift, or Eye Comfort Shield depending on your device.

If you spend several hours a day on screen, consider lowering your overall brightness during the day as well. Your eyes adjust to brightness over time, so a screen that felt dim at first will feel normal after a few minutes. Start with brightness at 40 to 50 percent of maximum and adjust up or down based on how clearly you can read.

Take regular breaks using the 20-20-20 rule

Every 20 minutes, look at something at least 20 feet away for at least 20 seconds. This gives your eye muscles a chance to relax and your tear film a chance to stabilize. When you focus on something far away, your eyes are in their most relaxed state — this is called your resting focal length. Looking at your screen keeps your eyes in a state of constant tension.

Set a timer on your phone or computer if you tend to lose track of time. Many devices have built-in tools for this: Windows has a focus timer in the Clock app, and there are free apps like Stretchly (Windows and Mac) and Time Out (Mac) that remind you to take breaks and suggest stretches for your neck and shoulders at the same time. Some people find it helpful to stand and look out a window during their break, which combines the eye rest with a change of posture.

If you cannot look away from your screen for 20 seconds, even a 5-second break where you look at something across the room helps. The key is to shift your focus away from the close distance of your screen regularly, not to achieve a specific number of minutes.

Blink more and use artificial tears if needed

You blink about 15 times per minute when reading printed text, but only about 5 to 8 times per minute when looking at a screen. Each blink spreads a fresh layer of tears across your eye, so blinking less means your eyes dry out faster. The simplest fix is to blink deliberately — make a conscious effort to blink fully and slowly every few seconds while you work. Some people find it helpful to blink twice after every sentence they read or type.

If your eyes feel dry even after you blink more, artificial tears can help. Over-the-counter drops like Refresh, Systane, or Blink are available at any pharmacy and are safe to use several times a day. Use drops that do not contain a redness reliever — those are meant for bloodshot eyes and can make dryness worse over time. If your eyes are dry regularly, talk to your doctor about whether you might have dry eye syndrome, which sometimes needs treatment beyond drops.

Avoid rubbing your eyes when they feel tired or itchy, because rubbing irritates them further and can make strain worse. If you feel the urge to rub, use a clean tissue or close your eyes for a few seconds instead.

Use screen filters and blue-light glasses if other changes are not enough

Anti-glare screen filters are thin sheets of plastic or glass that attach to your monitor and reduce reflections and glare. They work best if you sit near a window or under bright overhead lights. Brands like 3M and Kensington make filters for desktop monitors, and some laptop screens have built-in anti-glare coatings. Filters typically cost between 20 and 60 dollars depending on screen size.

Blue-light glasses have lenses that filter out some of the blue light from screens. The evidence that they reduce eye strain is weak — most studies show that the benefit comes from the reminder to blink and take breaks, not from the lenses themselves. If you decide to try them, they cost 20 to 100 dollars depending on the brand. They work best if you wear them only in the evening, since blue light during the day does not seem to cause strain.

Neither filters nor glasses should replace the other changes. Adjusting your monitor position, brightness, and break schedule will reduce strain more than any filter or glasses can. Use filters or glasses only if you have made those changes and still have strain.

Check your workspace lighting and reduce glare

Glare from windows, overhead lights, or reflections on your screen forces your eyes to work harder to see clearly. Position your monitor so windows are to the side rather than behind or in front of it. If you sit facing a window, close the blinds or move your desk. If overhead lights create a reflection on your screen, move your monitor slightly or angle it down a few degrees.

Indirect lighting is easier on your eyes than direct overhead lights. If your workspace has bright fluorescent overhead lights, ask if you can turn them off and use a desk lamp instead. A desk lamp pointed at your work surface rather than at your screen or face gives you light where you need it without creating glare. Warm-colored bulbs (2700 to 3000 Kelvin) are easier on your eyes than cool white or daylight bulbs, especially in the evening.

If you cannot control the lighting in your workspace, a desk lamp and an anti-glare filter together can make a big difference. The goal is to have enough light to see your screen clearly without bright spots or reflections that force your eyes to adjust.

Frequently Asked Questions

How long does it take for eye strain to go away after I make these changes?

Most people feel relief within a few days of adjusting their monitor position and brightness and taking regular breaks. If you have had strain for weeks or months, it may take a week or two for your eyes to fully adjust. If strain does not improve after two weeks of making these changes, see an eye doctor to rule out other causes like an outdated prescription or dry eye syndrome.

Do I need special glasses to use a computer?

Not necessarily. If your current glasses or contacts prescription is correct for screen distance, you do not need special computer glasses. However, if you wear bifocals or progressive lenses, you may find that computer glasses with a prescription optimized for screen distance reduce strain. Ask your eye doctor whether computer glasses would help you.

Is it bad to use my phone or tablet in bed before sleep?

Using screens before bed can make it harder to fall asleep because blue light suppresses melatonin, the hormone that makes you sleepy. Turn on night mode at least 30 minutes before bed, or avoid screens entirely in the hour before sleep. If you do use a device in bed, hold it farther away than you normally would — at least 12 inches — to reduce strain and blue light exposure.

Can eye strain cause permanent damage?

Eye strain itself does not cause permanent damage to your vision. However, if strain is caused by an outdated prescription or an underlying condition like dry eye syndrome, not treating it can lead to problems over time. If you have strain that does not go away with the changes described here, see an eye doctor to find out what is causing it.

What if I have to look at two monitors or switch between my screen and printed documents?

Position both monitors at the same distance and height so your eyes do not have to refocus when you switch between them. If you work with printed documents, place them on a document holder at the same height and distance as your screen, or use a copy stand next to your monitor. This reduces the number of times your eyes have to change focus, which cuts down strain significantly.