Eye Strain Headache: Causes, Relief and Warning Signs

An eye strain headache comes from overworking your eyes. Eye strain is fatigue or discomfort of the eyes after activities such as reading or computer work, often with watering or a headache. At a screen, people tend to blink less, and the strain grows when a prescription doesn't suit the screen distance or the eyes struggle to focus or work together up close. The symptoms are often temporary and fade after you stop, and breaks, good viewing habits and the right glasses help prevent them. A sudden, severe headache, or one with vision loss, double vision or a drooping face, is an emergency: call 911.

Key takeaways

Long stretches of reading, close work or screen time tire the eyes, and the headache builds during that work and often fades after you stop.
Every 20 minutes, look at something about 20 feet away for 20 seconds, and rest your eyes for 15 minutes after two hours of continuous computer use.
If headaches keep returning with reading or screen work, book a routine exam that checks focusing and eye teaming along with how clearly you see.
Call 911 for a sudden, severe headache or for sudden vision loss, double vision or a drooping face, even if the symptoms go away.

How can I tell if a headache is from eye strain?

Timing is the main clue: an eye strain headache builds during a long stretch of reading, close work or screen time. If the pain is a constant pressure on the face, head or neck, like a belt tightening around the head, it may be a tension-type headache, the most common type. Mental strain and postures that strain the head or neck, such as staring at a phone screen, are among its triggers.

Check your eyes too. Digital eye strain can cause dry eyes, blurry vision and eye discomfort along with headaches and neck and shoulder pain.

If your headaches have no link to reading, screens or close work, tell your primary care doctor about them as well.

Why are my eyes so tired?

Long, focused use tires them. Looking at a computer for a long time can tire out your eyes, and people tend to blink less often while looking at a computer screen or phone. Blinking is how the surface of the eye gets the moisture it needs, so fewer blinks leave it drier and more irritated.

That is why screens and dry eye so often show up together: spending a lot of time on a computer, tablet or phone can bring on dry eye.

Other things add to the load:

Room lighting that's much brighter or dimmer than the screen, and glare or reflections on it.
Wind and air conditioning, which the National Eye Institute advises people with dry eye to avoid.
Uncorrected vision problems, which make the symptoms more severe, and glasses that weren't designed for a computer, which lead some people to tilt their heads and end up with neck, shoulder or back pain.

How can I reduce eye strain naturally?

Most of the fixes cost nothing: breaks, deliberate blinks, a well-placed screen and air that isn't blowing in your face.

Use the 20-20-20 rule

Every 20 minutes, look at something about 20 feet away for 20 seconds. The pause gives your eyes a chance to refocus, and the American Optometric Association also recommends resting your eyes for 15 minutes after two hours of continuous computer use. Blink on purpose while you work, since blinking helps prevent dryness and irritation.

Set up the screen

Place the screen 20 to 28 inches from your eyes, with its center 15 to 20 degrees (about 4 or 5 inches) below eye level. Position it to avoid glare from windows and overhead lights, using blinds, drapes or a screen glare filter if you need to.

Keep the room about as bright as the screen, not much brighter or dimmer, and use the zoom feature for small print instead of pulling a phone or tablet closer.

Mind the air and your neck

Steer clear of smoke, wind and air conditioning blowing at your eyes, and run a humidifier if the air at home is dry. Sit with your back supported and your feet on the floor or a footrest, and set the screen where you don't have to crane toward it, since postures that strain the head or neck can trigger tension-type headaches.

Do eye drops help tired eyes?

They can when tired eyes are also dry. Many computer users, especially contact lens wearers, may benefit from lubricating eye drops.

Artificial tears are the most common treatment for mild dry eye, and you can buy them without a prescription. Over-the-counter moisturizing gels and ointments may also help. Our dry eye home care page goes further into choosing drops.

Not every eye drop is a lubricant. Antihistamine drops and vasoconstrictor (redness-relief) drops, for example, are used for eye allergies, so ask your optometrist to recommend the right drop for you. One common allergy drop pairs a redness reliever with an antihistamine, and its label warns that overuse may cause more eye redness.

Drops won't correct a prescription or a focusing problem, so if your eyes feel comfortable and the headaches still come, have your glasses and eye teaming checked.

Could my glasses or eye teaming be the cause?

Yes. Uncorrected farsightedness or astigmatism, weak eye focusing or coordination, and presbyopia, the age-related loss of close focus, can all bring on symptoms at a screen, and if the cause isn't addressed, the symptoms keep coming back. Glasses or contacts prescribed for general use may not suit computer work either. After testing, an optometrist may prescribe computer lenses that help relax the eyes.

Accommodative dysfunction, a problem with eye focusing, blurs vision and can bring visual stress and headaches, and it often shows up in people who do a lot of near work.

In convergence insufficiency, an eye teaming problem, the eyes have trouble working together on nearby objects, which can cause tired or sore eyes, blurry or double vision and headaches. You can have perfect vision and still have it, which is why a regular eye exam won't catch it: it takes tests that measure how far your eyes turn inward and how well they switch focus between near and far. Our guide to convergence insufficiency explains how it's measured.

When a small misalignment between where your eyes aim up close and where they rest is part of the picture, Neurolens lenses build in a contoured prism that is often used to relieve that strain. For children whose focusing, eye teaming or tracking is the issue, vision therapy trains those skills.

When is a headache with eye symptoms an emergency?

Call 911 for a sudden, severe headache with no known cause, or for sudden vision loss or double vision, a drooping face, arm weakness, slurred speech or loss of balance. These are stroke warning signs, and you should call even if they go away. Call 911 too for double vision or a drooping eyelid that comes with a severe headache, eye pain or a pupil that looks different from the other one. For sudden blur on its own, call us and come in for an exam if it clears right away, or go to an emergency room if it doesn't.

Call 911 for any sudden, severe headache, including one with a stiff neck, and for a first or worst-ever headache that comes with confusion, weakness, double vision or loss of consciousness. Call or see a doctor right away for a severe headache with fever, nausea or vomiting that isn't related to another illness, or a headache after a brain injury.
Sudden, intense eye pain with nausea, a red eye or blurry vision can be angle-closure glaucoma, a medical emergency. Treat severe eye pain that comes with a headache or halos around lights the same way. During office hours, call us immediately or go to an emergency room; when the office is closed, go straight to an emergency room.

For new eye pain or redness, call us at 310-828-2010: we see urgent eye problems the same day during office hours, as our urgent eye care page explains, and new or severe eye pain belongs in an emergency room when the office is closed. Sudden vision loss in one or both eyes, even if it comes back, is a 911 call at any hour. Headaches that keep returning with reading or screen work call for a routine visit, with an exam that checks focusing and eye teaming as well as how clearly you see.

How we find the cause of eye strain at Cohenmehr Optometry

Our eye doctors in Los Angeles start with a comprehensive exam that evaluates your visual system, focusing and eye alignment to find the underlying cause of your symptoms, the first step in our computer vision syndrome care.

Depending on what we find, your plan can include customized computer or office lenses, a change of contact lenses, adjustments to your visual ergonomics, and treatment for the dry eye that often comes with screen use. If alignment is part of it, the same visit can include the measurement for Neurolens.

Questions patients ask

What is eye strain?

Eye strain is fatigue or discomfort of the eyes from overusing them, in activities such as reading or computer work, and it often comes with watering or a headache. The screen version, which the American Optometric Association calls computer vision syndrome or digital eye strain, is a group of eye and vision problems whose most common symptoms are eyestrain, headaches, blurred vision, dry eyes, and neck and shoulder pain. Many of the visual symptoms are temporary and decline after you stop.

Do eye exercises help eye strain?

Only for specific problems. Some people have eye focusing or eye coordination problems that glasses or contacts can't fully correct, and for them a program of vision therapy may be needed: structured visual activities that train the eyes and brain to work together more effectively. For ordinary screen strain, rest helps: every 20 minutes, look into the distance for 20 seconds so your eyes can refocus.

Do blink exercises help?

They can, if dryness is part of your strain. In a 2025 study of 98 people with dry eye, the routine that came out ahead after two weeks was 15 cycles of closing the eyes, squeezing them shut and opening them again, done three times a day. It reduced symptoms, the number of incomplete blinks, and staining that shows irritation on the surface of the eye, but most of the gains faded within two weeks of stopping.

Why do my eyes feel heavy?

Dry eye is one reason. Along with a scratchy feeling, stinging or burning, people with dry eye can have blurred vision and feel like their eyelids are heavy. Mild symptoms are treated with artificial tears, gels and ointments, and an eye doctor can prescribe medicine when those aren't enough. If an eyelid sits lower than it should, our page on droopy eyelids covers the causes; a sudden droop needs a same-day visit (an emergency room when we're closed), and a droop with double vision, eye pain, a severe headache or a pupil that looks different is a 911 call.

Sources

Written by

Dr. Bijan Cohenmehr, OD

Founder of Cohenmehr Optometry, in practice for over 40 years. He leads the practice’s dry eye care and myopia management. A graduate of SUNY College of Optometry.

About Dr. Bijan →

Eye Strain Headache: Why It Happens and What Helps