Eye pain has dozens of possible causes, ranging from something as simple as staring at a screen too long to something as urgent as a sudden spike in pressure inside the eye. The type of pain you’re feeling, where exactly it is, and what other symptoms come with it are the biggest clues to what’s going on.
Most eye pain falls into two broad categories: pain on the surface (stinging, burning, or a gritty feeling) and pain that feels deeper, like an ache or pressure behind the eyeball. Understanding which one you’re dealing with helps narrow things down quickly.
Surface Pain vs. Deep Pain
Surface eye pain usually involves the cornea, the clear front layer of your eye. The cornea is packed with nerve endings, which is why even a tiny scratch can produce intense stinging or a feeling that something is stuck in your eye. Scratches, dry patches, infections, and contact lens irritation all fall into this category. The pain tends to be sharp, gritty, or burning, and it often gets worse when you blink.
Deep or orbital pain feels like it’s coming from behind or inside the eyeball. It’s more of an ache, throb, or pressure sensation. This type of pain can originate from the muscles that move your eyes, inflammation inside the eye, pressure buildup, or even problems that aren’t in the eye at all, like sinus infections or migraines. Deep pain that worsens when you move your eyes in different directions is a particularly important signal to pay attention to.
Dry Eyes
Dry eye is one of the most common reasons eyeballs hurt, and it’s easy to underestimate. When your tear film breaks down or evaporates too quickly, the corneal nerves become exposed to air, temperature changes, and inflammatory molecules. That triggers burning, irritation, tenderness, and an aching or foreign-body sensation, as if there’s sand under your eyelids. Some people also develop a heightened sensitivity to wind and light.
Dry eye pain can be confusing because it doesn’t always feel “dry.” Your eyes may actually water constantly as a reflex response to the irritation, yet the underlying tear film is still unstable. Indoor heating, air conditioning, low humidity, certain medications (antihistamines, some blood pressure drugs), and aging all increase your risk. Preservative-free artificial tears are the standard first step for relief. Warm compresses held over closed eyes for five to ten minutes can also help by loosening oils in the eyelid glands that stabilize your tear film.
Screen Time and Eye Strain
If your eyes hurt mostly during or after long stretches on a computer, phone, or tablet, digital eye strain is a likely culprit. Your eyes are constantly refocusing to read pixelated text on a screen, and the low contrast between letters and background forces the focusing muscles to work harder than they would reading print on paper. On top of that, people blink about 60% less often while looking at screens, which accelerates tear evaporation and compounds the dryness problem.
The result is a combination of aching, tired-feeling eyes, blurred vision, and sometimes headaches that radiate from the forehead or temples. The 20-20-20 rule helps: every 20 minutes, look at something 20 feet away for 20 seconds. Positioning your screen slightly below eye level so your eyelids naturally cover more of the eye surface also reduces evaporation. These aren’t dramatic fixes, but for strain-related pain they’re often all you need.
Migraines and Sinus Pressure
Eye pain that isn’t actually coming from the eye itself is more common than most people realize. The trigeminal nerve, the major nerve supplying sensation to your face, has branches that connect to your forehead, sinuses, and the area behind your eyes. When one branch is activated, pain can radiate to regions served by the other branches.
During a migraine, the first branch of the trigeminal nerve generates head pain, but the second branch connects to sensors in the sinuses. This creates pressure and pain across the forehead, behind the eyes, and beneath the cheeks that can convincingly mimic a sinus infection. In fact, many people who think they have recurring “sinus headaches” are actually experiencing migraines. A true sinus infection typically comes with thick discolored nasal discharge, reduced sense of smell, and sometimes fever. If you have throbbing eye pain with nausea, light sensitivity, or visual disturbances but no real congestion, migraine is the more likely explanation.
Inflammation Inside the Eye
Scleritis, inflammation of the tough white outer wall of the eye, causes a distinctive piercing pain that worsens when you move your eyes. The pain can be severe enough to wake you from sleep and may spread to other parts of your face. Redness, tearing, and light sensitivity usually accompany it. Scleritis looks superficially similar to pink eye (conjunctivitis), but pink eye doesn’t produce the deep, intense pain that scleritis does.
Uveitis, inflammation of structures inside the eye, produces a similar picture: deep aching, light sensitivity, blurred vision, and sometimes visible redness. Both conditions are often linked to autoimmune disorders and require prescription treatment to prevent lasting damage to your vision. If your eye pain is deep, gets worse with movement, and comes with notable light sensitivity, these are conditions worth having evaluated promptly.
Acute Glaucoma
A sudden, complete blockage of the eye’s internal drainage system causes pressure inside the eye to spike rapidly. This is called an acute angle-closure attack, and it produces severe pain in the eye or forehead, blurred or decreased vision, halos around lights, redness, nausea, and vomiting. It’s a medical emergency because sustained high pressure can permanently damage the optic nerve within hours.
Normal eye pressure sits roughly between 10 and 20 mmHg. During an acute attack it can climb far above that range very quickly. The combination of intense eye pain with nausea, vomiting, or halos is the hallmark that distinguishes this from less urgent causes. If you experience that combination, you need emergency care, not an appointment next week.
Corneal Injuries and Infections
A scratch on the cornea (corneal abrasion) can happen from a fingernail, a contact lens edge, dust, or even rubbing your eyes too hard. The pain is immediate, sharp, and usually worse with blinking. Most small abrasions heal within 24 to 48 hours on their own, though they can feel miserable in the meantime.
When an abrasion doesn’t heal properly or when bacteria, viruses, or fungi get into the cornea, it can progress to an ulcer or keratitis, an open sore or active inflammation on the corneal surface. Contact lens wearers who sleep in their lenses or use tap water to clean them are at higher risk. Symptoms include persistent pain, redness, discharge, light sensitivity, and the feeling that something is in the eye even when nothing is there. Corneal infections need treatment to prevent scarring that can permanently affect vision.
When Eye Pain Needs Emergency Attention
Most eye pain resolves with rest, artificial tears, or removing the irritant. But certain combinations of symptoms signal that something more serious is happening. According to Mayo Clinic guidelines, you should seek emergency care if your eye pain is severe and accompanied by a headache, fever, or increased light sensitivity. The same applies if your vision changes suddenly, you experience nausea or vomiting alongside the pain, you see halos around lights, you notice swelling in or around the eye, you can’t move the eye normally or keep it open, or you see blood or pus coming from the eye.
Chemical splashes and foreign objects embedded in the eye also warrant immediate evaluation. For chemical exposure, flush the eye with clean water for at least 15 minutes before heading to the emergency room.
Simple Relief for Everyday Eye Pain
For mild, non-emergency eye pain, a few strategies cover the most common culprits. Preservative-free artificial tears, used several times a day, address dryness and surface irritation. Warm compresses soothe tired, strained eyes and help the oil glands in your eyelids function better. Taking regular breaks from screens and consciously blinking more often during focused work reduces strain. Staying hydrated and using a humidifier in dry environments also helps keep your tear film stable.
If your pain is recurring, worsening over days, or accompanied by vision changes, redness that doesn’t clear, or light sensitivity, those patterns suggest something beyond simple strain or dryness. Getting an eye exam at that point gives you a definitive answer rather than months of guessing.