Pain behind the eyes is most commonly caused by tension headaches, migraines, sinus pressure, or digital eye strain. Less often, it signals something more serious like an infection or nerve condition. The sensation can feel like deep pressure, a dull ache, or sharp stabbing, and the type of pain you’re experiencing is one of the best clues to what’s causing it.
How the Pain Signal Works
The trigeminal nerve is the main pain highway for your face, and its upper branch (called the ophthalmic branch) covers the forehead, upper eyelid, and the area around and behind the eye. When anything irritates or compresses this nerve pathway, your brain interprets the signal as pain coming from behind the eye, even if the actual source is in your sinuses, blood vessels, or the nerve itself. This is why so many different conditions produce what feels like the same deep eye pain.
Digital Eye Strain
This is the most likely culprit if your pain shows up during or after screen time. Surveys suggest that somewhere between 65% and 94% of adults who use screens regularly experience at least one symptom of digital eye strain, with rates climbing sharply since the shift to remote work during the pandemic. The pain tends to feel like a dull ache or pressure behind both eyes, often accompanied by dry eyes, blurred vision, or neck and shoulder tension.
Your eyes focus using a small muscle that contracts when you look at something close. Hours of sustained close-up focus tire that muscle, and you blink less often while staring at a screen, which dries out the eye surface and compounds the discomfort. The 20-20-20 rule is the standard recommendation: every 20 minutes, look at something 20 feet away for 20 seconds. It’s simple, but it works by giving that focusing muscle periodic rest and prompting you to blink.
Migraines
Migraine pain frequently settles behind one eye, and up to 80% of people with migraines also experience light sensitivity, which makes the eye pain feel even worse. Some people get what’s called retro-ocular migraine pain, a deep ache behind one eye paired with sensitivity to light and sometimes temporary visual disturbances on that same side, all with completely normal eye exams. The pain is throbbing or pulsating, lasts anywhere from 4 to 72 hours, and often gets worse with physical activity.
If your behind-the-eye pain comes with nausea, sensitivity to light or sound, or visual auras (flickering lights, blind spots), migraine is a strong possibility. These attacks can be triggered by stress, hormonal shifts, certain foods, poor sleep, or changes in weather.
Sinus Infections
Your sinuses are air-filled cavities surrounding your eyes, and two of them sit particularly close to the eye socket. The sphenoid sinus is directly behind your eyes, and the ethmoid sinuses sit between them. When either becomes inflamed or infected, the swelling and pressure can produce a deep, constant ache that feels like it’s coming from behind the eyeball.
Sphenoid sinusitis is especially tricky because it often causes headaches that don’t respond well to standard pain relievers and get worse when you move your head. The pain can show up in the forehead, temples, behind the eyes, or even at the back of the skull. Unlike migraine, sinus pain typically comes with nasal congestion, thick discolored mucus, reduced sense of smell, and sometimes a low fever. If your behind-the-eye pain gets worse when you bend forward or press on your cheekbones, sinuses are a likely source.
Cluster Headaches
Cluster headaches produce some of the most intense pain a person can experience, and that pain almost always centers behind or around one eye. Attacks last between 15 minutes and 3 hours, can strike up to eight times a day, and tend to arrive at the same time each day, often waking people from sleep. They come in “clusters” lasting weeks or months, then disappear for a while before returning.
The telltale sign is what happens alongside the pain: the eye on the affected side may water, turn red, or develop a drooping eyelid. You might also get a stuffy or runny nose on that same side only. Unlike migraine sufferers, who usually want to lie still in a dark room, people having a cluster headache often feel intensely restless and pace or rock back and forth.
Optic Neuritis
Optic neuritis is inflammation of the optic nerve, and it has a very specific signature: pain that gets worse when you move your eyes, followed by worsening vision over days. Colors start to look washed out or “dirty” in the affected eye. You can test this yourself by covering one eye at a time and comparing how saturated a colored object looks. If one eye sees the color as noticeably darker or duller, that’s a meaningful clue.
About 92% of people with optic neuritis experience pain with eye movement. The remaining 8% don’t, because their inflammation sits in a portion of the nerve that doesn’t move when the eye does. This condition is most common in adults between 20 and 45 and can be an early sign of multiple sclerosis, so it warrants prompt evaluation.
Acute Angle-Closure Glaucoma
This is a genuine emergency. Acute angle-closure glaucoma happens when the drainage system inside the eye suddenly blocks, causing pressure to spike from its normal range of 10 to 21 mmHg up to 50 or even 80 mmHg. The pain is severe and rapid, typically in or around one eye, and comes with sudden blurry vision, seeing halos around lights, a visibly red eye, nausea, and vomiting.
The combination of intense eye pain, nausea, and visual changes can mimic a migraine or even a stomach virus, which sometimes delays treatment. Without prompt intervention, the pressure can permanently damage the optic nerve and cause irreversible vision loss. If you experience sudden severe eye pain with vision changes and nausea, treat it as an emergency.
Trigeminal Neuralgia
In rare cases, pain behind the eye comes from the trigeminal nerve itself misfiring. Trigeminal neuralgia causes brief, intense jolts of electric-shock-like pain that can be triggered by touching the face, chewing, or even a breeze. The ophthalmic branch is the least commonly affected of the nerve’s three divisions, but when it is, the pain can feel like it’s coming from the eye, nose, or scalp. Causes include a blood vessel pressing on the nerve, multiple sclerosis, or sometimes no identifiable cause at all.
Red Flags That Need Immediate Attention
Most behind-the-eye pain resolves on its own or with simple treatment. But certain combinations of symptoms signal something more dangerous:
- Sudden vision changes alongside the pain, especially in one eye
- Seeing halos around lights, which can indicate dangerously high eye pressure
- Severe pain with fever or sensitivity to light, which may suggest infection or inflammation
- Nausea and vomiting paired with eye pain and redness
- Swelling around the eye or inability to move the eye normally
- Blood or pus coming from the eye
- Pain that doesn’t improve after two to three days of over-the-counter treatment
What to Expect at a Medical Evaluation
When you see a doctor for persistent pain behind the eyes, they’ll typically start with a basic eye exam and may use a slit lamp, a microscope that lets them examine the front structures of the eye in detail. Tonometry measures the pressure inside the eye and takes only seconds. If the exam looks normal but the pain persists, your doctor might use numbing eye drops as a diagnostic tool: if the drops eliminate the pain, the source is likely on the eye surface itself. If the pain continues despite the drops, the problem is deeper, possibly involving the nerves, sinuses, or brain.
Imaging like CT or MRI scans may be ordered if your doctor suspects sinus disease, optic neuritis, or a structural issue. For conditions like optic neuritis, an MRI can also help assess whether there are signs of related neurological conditions. In many cases, though, the pattern of your symptoms, what the pain feels like, how long it lasts, what makes it worse, and what other symptoms accompany it, gives your doctor enough information to narrow down the cause without advanced testing.