Why screens can be tiring
Many people notice that reading on a screen leaves them more tired than reading print, though experiences differ and print is not always easier. Several ordinary factors tend to contribute.
- Blinking less. People typically blink less often while concentrating on a screen, which can leave the eyes feeling dry or gritty.
- Constant close focus. Looking at something at the same short distance for a long time can leave the focusing muscles of the eye feeling tired.
- Glare and brightness. A screen that is much brighter or dimmer than the room, or that reflects a window or lamp, makes your eyes work harder.
- Small text and cramped layouts. Small type and tight spacing add to the effort.
- Posture. A screen held too low, too high or too close often brings neck and shoulder tension along with the eye discomfort.
The group of symptoms people describe after long screen use, such as tired or dry eyes, blurry vision, headaches and a sore neck, is often called digital eye strain. It is common, usually temporary, and often eased by simple changes. It is not the same as damage, though some symptoms can also have other causes.
Set up the screen
A few adjustments are worth trying first.
Distance and angle. Many people find an arm’s length or a little more comfortable for a monitor or tablet, with the top of the screen at about eye level or slightly below so you look slightly down. A phone is often held too close; holding it a bit farther away and enlarging the text can help.
Brightness and contrast. Match screen brightness roughly to the room. A very bright screen in a dim room, or the reverse, is a common cause of discomfort. Dark text on a light background suits some readers, while others prefer a dimmer or darker theme in the evening. Try both and see which feels easier.
Text size and spacing. Increase font size and line spacing until you can read without leaning in. Wider margins and a moderate line length are usually easier on the eyes than long lines across the full width.
Reduce glare. Position the screen so windows and lamps do not reflect in it. Closing a blind or tilting the screen slightly is often enough.
Keep the room lit. Reading a bright screen in a dark room tends to be tiring. A soft lamp in the background usually helps.
Take breaks
Regular rest breaks are among the most commonly suggested measures. A widely repeated guideline is the 20-20-20 habit: about every 20 minutes, look at something roughly 20 feet away for about 20 seconds. It is a rule of thumb rather than a proven cure, but it is easy to try and costs nothing. The aim is to let your eyes relax from close focus and to remind yourself to blink.
Beyond that:
- Blink deliberately now and then, fully, if your eyes feel dry.
- Stand, stretch and look out a window between chapters.
- Take a longer break after an hour or so of continuous reading.
- Consider a stretch of print or audio if you have already had a lot of screen time that day.
Mix up formats
You do not need to choose only one way to read. Many people alternate between a screen, a printed book and listening. An e-reader with a matte, non-glaring display may suit some readers; others prefer a printed page. If your day is already full of screens for work, ending the day with print or audio gives your eyes a rest. If you want to rest your eyes without giving up on the story, audiobook listening is one option.
Watch the whole picture
Eye comfort is only part of fatigue. Poor sleep, long hours, dehydration and stress can all make reading feel more draining, whatever the format. An evening wind-down away from bright screens may suit bedtime reading better, and readers with low vision may benefit from low vision tools such as magnification or high-contrast settings, ideally chosen with an eye-care professional. Good light and a comfortable chair matter too, and reading posture influences neck and shoulder tension that gets blamed on the screen.
When to see a professional
Simple changes help many people, but some problems need a proper check. Consider seeing an eye-care professional or doctor if:
- tired eyes, blurred vision or headaches keep returning despite the adjustments above;
- you see double, notice halos, or experience sudden changes in vision;
- you have eye pain or redness;
- you have not had your eyes tested in a long time, since uncorrected vision problems and outdated glasses are common reasons for strain;
- you are over about 40 and notice close text becoming harder to see, which is a normal change that glasses can often address.
Sudden vision changes or eye pain should be treated as urgent. This article gives general information and is not medical advice, and it cannot say what is causing your symptoms.
A small plan
Today, try three things: raise the text size, set a reminder to look away every 20 minutes or so, and move your lamp or screen to reduce glare. Notice whether your eyes feel better at the end of a session. If they do not, a visit to an eye-care professional is a sensible next step.