Can Eye Strain Cause Headaches?

It’s 4 p.m. You’ve been looking at a screen since morning. Now there’s a dull ache behind your eyes, and it’s creeping across your forehead. Your eyes feel tired and dry, and the words are starting to blur. If that sounds like your average Tuesday, you may be dealing with eye strain. And it may be causing your headaches, too.

Eye strain is one of the most common things people tell us about. We use our eyes for close-up work more than ever: phones, tablets, computers, reading and TV. When we push our eyes too hard for too long, they push back with tiredness, aching and headaches.

The good news: eye strain doesn’t harm your eyes, and relief is often simple. But headaches can also come from a vision problem that needs fixing, or, less often, from an eye disease. This guide explains why your eyes and head ache together, how to get relief, and when to get your eyes checked.

Key Takeaways

• Eye strain happens when your eyes work hard for a long time. It often brings on headaches.
• Screens are the biggest cause today, partly because we blink less when we stare at them.
• A vision problem that isn’t corrected, like needing glasses you don’t have, is a common hidden cause.
• The 20-20-20 rule, better lighting and blinking more are simple fixes that help.
• Eye strain doesn’t damage your eyes. But headaches that keep coming back deserve an eye exam.
• A sudden, severe headache with eye pain, halos around lights or vision changes needs care right away.

What Is Eye Strain?

Eye strain is your eyes getting tired from overuse. Doctors sometimes call it asthenopia (a medical word for tired, aching eyes). When you look at something up close, tiny muscles inside and around your eyes tighten to make the image sharp and point both eyes at the same spot. Hold that focus for hours, and those muscles get tired, the same way your legs ache after standing all day.

When screens cause it, you may hear it called digital eye strain or computer vision syndrome. It’s the same idea, but screens add a few twists: glare, small text and, most of all, less blinking. When you blink less, your eyes dry out. Tired muscles plus dry eyes are what make your eyes feel gritty, tired and sore by the end of the day.

Here’s the reassuring part. The American Academy of Ophthalmology (AAO) says looking at a screen for long periods won’t cause permanent damage to your eyes. The discomfort is real, and it’s worth fixing, but it goes away with rest and better habits.

Why Do Eye Strain and Headaches Go Together?

There are three main reasons.

• Tired focusing muscles. When the muscles that focus your eyes are overworked, you can feel it as a dull ache around or behind your eyes, across your forehead or at your temples.
• Squinting and tensing. When you strain to see, you frown, squint and lean toward the screen. That tension in your face, neck and shoulders can build into a tension headache.
• Dry, irritated eyes. Blinking less leaves your eyes dry and uncomfortable, which adds to the ache.

Put those together, and it’s easy to see why tired eyes and a sore head so often show up at the same time.

What Causes Eye Strain?

Too much screen time

This is the top cause today. Long hours on computers, phones and tablets keep your focusing muscles locked in one position. The AAO says we blink less often when we use screens, which dries out the eyes.

A vision problem that isn’t corrected

This is the sneaky one. If you need glasses and don’t have them, or your prescription is out of date, your eyes work overtime to keep things clear. Common causes include farsightedness (trouble seeing up close), astigmatism (blurry vision from an unevenly shaped eye) and presbyopia (the normal loss of up-close focus that starts around age 40). Many people never connect their headaches to their eyes.

Poor lighting and glare

A room that’s too dim, or glare bouncing off your screen from a window or ceiling light, makes your eyes work harder.

Long stretches of close-up work

Reading, sewing, crafts or any detailed work up close can tire your eyes, just like screens do.

Dry eye

Dry air from air conditioning, which we run most of the year in Florida, can dry out your eyes even more. If your eyes stay dry and gritty no matter what you do, you may have dry eye disease, which can be treated. Learn more in our guide: A simple guide to dry eye.

Other things that make it worse

Being tired, stressed or not drinking enough water can make eye strain worse. So can sitting too close to your screen or at an awkward angle.

Who Is Most Likely to Get Eye Strain?

• People who spend hours on screens without breaks
• People whose glasses prescription is missing or out of date
• Adults over 40, as up-close focusing gets harder with age
• People who do a lot of reading or detailed close work
• People who work in poor lighting or with screen glare
• People who already get tension headaches or migraines

Signs of Eye Strain

• Tired, aching or sore eyes after long focus
• A dull headache around or behind your eyes, across your forehead or at your temples
• Dry, gritty or watery eyes. Dry eyes can make your eyes water, too.
• Blurry or double vision that clears when you rest your eyes
• Trouble switching focus from near to far
• Being more sensitive to light
• Neck, shoulder or back pain from leaning toward your work
• Trouble concentrating as the day goes on

These signs usually get better with rest. That’s a good sign it’s ordinary eye strain.

How an Eye Doctor Checks for Eye Strain

At your visit, the eye doctor will ask about your headaches, your screen and reading habits, and when the symptoms happen. Then they’ll check:

• How well you see, and whether a missing or outdated prescription could be to blame
• How well your eyes focus and work together as a team
• Whether your eyes are dry
• The pressure inside your eyes, to check for glaucoma (a disease that damages the nerve in the back of your eye)
• The back of your eye, to make sure it’s healthy

If your headaches seem to come from something other than your eyes, your eye doctor will point you to the right kind of care. Learn more in our guide: Glaucoma explained.

How to Get Relief From Eye Strain

Use the 20-20-20 rule

Every 20 minutes, look at something about 20 feet away for at least 20 seconds. This lets your focusing muscles relax, and it reminds you to blink. The AAO suggests setting a timer on your phone or watch so you don’t forget.

Blink more, and use eye drops

Try to blink fully and often when you’re on a screen. Over-the-counter artificial tears (lubricating eye drops) can help keep your eyes moist and comfortable.

Set up your screen

• Sit about an arm’s length from your screen (18 to 25 inches, per the AAO).
• Put the screen a little below eye level, so you look slightly down.
• Move your screen so windows and bright lights don’t cause glare.
• Make the text bigger so you don’t have to squint.
• Match your screen brightness to the room.

Keep your prescription up to date

If an exam shows you need glasses or a new prescription, the right lenses can ease strain that breaks alone won’t fix. If you use a computer a lot, ask your eye doctor about glasses made for screen distance.

Take care of your whole body

Get enough sleep, drink water, and take real breaks away from close work. Stretch your neck and shoulders. Pain relievers can help an occasional headache, but if you’re reaching for them often, get your eyes checked instead.

How to Prevent Eye Strain

• Follow the 20-20-20 rule during screen time.
• Use good lighting with little glare.
• Take breaks and switch between near and far tasks.
• Get regular eye exams to keep your prescription current.
• Drink water, and use artificial tears if your eyes feel dry.
• Blink often, especially on screens.
• Put screens away a while before bed.

When Should You See an Eye Doctor?

Ordinary eye strain that goes away with rest usually doesn’t need a doctor. Book an eye exam if:

• Your headaches or tired eyes happen often
• They don’t get better after you change your habits and screen setup
• Your eyes stay dry or gritty even with eye drops
• It’s been more than a year since your last eye exam

Get care right away for a sudden, severe headache, a headache with eye pain or nausea, halos around lights, or any lasting change in your vision.

Frequently Asked Questions

Can eye strain really cause headaches?

Yes. Tired focusing muscles, plus the squinting and tensing that come with straining to see, can cause a dull headache around your eyes and forehead. Easing the strain often eases the headaches too.

Does eye strain damage my eyes?

No. The AAO says long screen use won’t cause permanent damage to your eyes. The discomfort is real, but it goes away with rest and better habits.

What is the 20-20-20 rule?

Every 20 minutes, look at something about 20 feet away for at least 20 seconds. It gives your focusing muscles a break and reminds you to blink.

Do blue light glasses help with eye strain?

The AAO does not recommend blue light glasses, because there’s no scientific evidence that blue light from screens causes eye strain or damage. Breaks, blinking, good lighting and the right prescription help more.

Why do my eyes feel dry after screen time?

You blink less often when you look at a screen. Fewer blinks means your eyes don’t get wet enough, so they feel dry and gritty. Blinking more and using artificial tears helps. If dryness doesn’t go away, ask about dry eye treatment.

Could my headaches mean I need glasses?

Possibly. A missing or outdated prescription is one of the most common hidden causes of eye strain headaches. An eye exam can tell you for sure.

When should I worry about a headache?

Get care right away for a headache that is sudden and severe, or comes with eye pain, nausea, halos around lights or vision changes. These go beyond ordinary eye strain.

Does age make eye strain worse?

It can. Starting around age 40, your eyes slowly lose some of their ability to focus up close. This normal change is called presbyopia. It makes reading and screen work more tiring.

Get Relief Close to Home

If tired eyes and nagging headaches are wearing you down, you don’t have to just push through. Dr. James Powers and our team can check your vision and the health of your eyes, including dry eye and eye pressure, at our New Port Richey, Clearwater and St. Petersburg offices.

• New Port Richey — 5413 US Highway 19, New Port Richey, FL 34652
• Clearwater — 2565 Enterprise Rd, Clearwater, FL 33763
• St. Petersburg — 603 7th St S, St. Petersburg, FL 33701

More guides: Dry eye · Glaucoma · Macular degeneration · Parts of the eye

Sources: American Academy of Ophthalmology, “Nation’s ophthalmologists offer tips for easing eye strain from too much screen time” (aao.org); American Academy of Ophthalmology, “Should You Be Worried About Blue Light?” (aao.org).

This article is general information, not medical advice for your eyes. For advice about your own eyes, call us or see your eye doctor.