Eye pain has dozens of possible causes, ranging from something as simple as staring at a screen too long to something as serious as a sudden spike in eye pressure. Most of the time, sore eyes point to a minor, treatable issue like dryness or strain. But certain combinations of symptoms signal a problem that needs same-day or emergency attention, so knowing the difference matters.
The Two Main Types of Eye Pain
Eye pain generally falls into two categories based on where you feel it. Surface pain affects the front of the eye, the eyelids, or the tissue around the eye. It often feels like burning, stinging, itching, or a gritty “something in my eye” sensation. Deeper pain, sometimes described as aching, throbbing, or pressure behind the eye, typically involves structures farther back in the eye socket or connects to problems elsewhere in the head, like sinus congestion or migraines.
This distinction helps narrow down causes. A scratchy, burning feeling usually points toward dryness, allergies, or a minor scratch on the cornea. A deep ache that worsens when you move your eyes could indicate inflammation of the optic nerve or another internal issue. Both types deserve attention, but they lead to very different explanations.
Dry Eyes: The Most Common Culprit
Dry eye disease is one of the most frequent reasons eyes hurt, and the discomfort it causes can be surprisingly intense. In a review of 144 dry eye patients at the Cleveland Clinic, 81% reported some level of eye pain, and 13% rated their pain at 8 out of 10 or higher. Dry eyes don’t just feel mildly irritating for everyone.
When your tear film is unstable or your eyes aren’t producing enough moisture, the nerve endings on the surface of the cornea become exposed and overstimulated. Over time, repeated irritation can actually rewire those nerves, making them hypersensitive. This means pain can persist even after the dryness itself has been treated, a phenomenon eye specialists sometimes call “pain without stain” because the eye looks normal on examination but still hurts. People who have had LASIK or similar refractive surgery, along with those who have depression, anxiety, fibromyalgia, or migraines, tend to experience more severe dry eye pain.
For mild dryness, lubricating eye drops (artificial tears) are the first step. If your eyes feel dry because tears evaporate too quickly, look for drops with oil-based or lipid ingredients. If the issue is low tear volume, thinner drops labeled “hypotonic” or “hypoosmolar” work better. One important note: avoid drops marketed specifically for red eye relief. These contain ingredients that constrict blood vessels and can actually make redness and discomfort worse with repeated use.
Digital Eye Strain
The average American worker spends about seven hours a day looking at a computer screen, and anyone logging two or more continuous hours on a digital device daily is at heightened risk for what the American Optometric Association calls computer vision syndrome. Symptoms include aching or tired eyes, blurred vision, headaches, and difficulty focusing.
The core problem is that screens demand sustained close-range focus, and you blink far less often while staring at one. Reduced blinking dries the eye surface, while the constant focusing effort fatigues the small muscles inside the eye. The fix is mostly behavioral: follow the 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds), adjust screen brightness to match your surroundings, and make a conscious effort to blink. If your eyes still ache after these changes, artificial tears can help bridge the gap.
Infections and Pink Eye
Conjunctivitis, commonly called pink eye, inflames the clear membrane covering the white of the eye and lining the eyelids. It causes redness, tearing, and varying degrees of pain or discomfort depending on the type.
- Bacterial conjunctivitis produces thick, yellow-green discharge that crusts the eyelids shut overnight. You may also notice eyelid swelling, pain, and mildly blurred vision. It typically requires antibiotic drops to clear.
- Viral conjunctivitis tends to produce more watery discharge and often starts in one eye before spreading to the other. It’s highly contagious, spreading through contaminated hands or objects, and usually resolves on its own within one to two weeks.
- Allergic conjunctivitis causes intense itching along with redness and tearing. It’s not contagious and commonly appears alongside hay fever, asthma, or eczema. Avoiding the allergen and using cool compresses or antihistamine drops typically provides relief.
Because the symptoms of all three types overlap, it can be difficult to tell them apart at home. Thick, colored discharge and significant pain lean toward a bacterial cause. Itching with clear, watery eyes in allergy season leans toward allergic. But when in doubt, an eye care provider can sort it out quickly.
Contact Lens Problems
Contact lens wearers face a specific risk: bacterial keratitis, an infection of the cornea itself. Symptoms include eye pain, redness, blurred vision, light sensitivity, excessive tearing, and discharge. This is more serious than conjunctivitis because it can scar the cornea and permanently affect vision if untreated.
The biggest risk factors are sleeping in lenses, not disinfecting them properly, rinsing or storing lenses in tap water instead of sterile solution, and “topping off” old solution in the case rather than replacing it fresh each time. Sharing decorative or colored lenses is another common cause. If you wear contacts and develop pain with light sensitivity or blurred vision, remove the lenses immediately and get evaluated the same day.
Scratches and Foreign Bodies
A corneal abrasion, or scratch on the surface of the eye, causes sharp pain, tearing, redness, and the feeling that something is stuck in your eye even after the object is gone. Common causes include dust, sand, fingernails, contact lenses, and rubbing your eyes too hard.
The good news is that minor abrasions heal quickly. Most people feel significantly better within 24 to 48 hours, and the scratch itself typically resolves within a few days without lasting problems. If pain hasn’t improved after 24 hours of following any prescribed treatment, that’s a sign something else may be going on, such as an infection developing at the scratch site, which can lead to scarring if it isn’t addressed.
Headaches That Feel Like Eye Pain
Not all eye pain originates in the eye. Migraines and sinus problems both produce pain that feels centered behind or around the eyes, making it easy to assume the problem is ocular when it isn’t.
An estimated 80% of people who believe they have sinus headaches actually have migraines. The distinction matters because the treatments are completely different. Sinus headaches produce pressure-like pain across both sides of the face, often with nasal congestion and sometimes fever. Migraines typically affect one side of the head, concentrating around the forehead, temples, or back of the skull, and come with nausea, light sensitivity, or visual disturbances. If you’re getting recurrent “sinus headaches” without actual sinus infection symptoms like thick nasal discharge and fever, migraines are the more likely explanation.
Optic Neuritis
Optic neuritis is inflammation of the nerve that carries visual signals from the eye to the brain. Over 90% of people with this condition experience pain, and the hallmark feature is that the pain worsens when you move your eyes. It also causes visual field defects, usually a gap or blurry spot in the center of your vision.
This condition is associated with autoimmune diseases, particularly multiple sclerosis. It typically affects one eye and develops over hours to days. If you notice pain with eye movement plus a new blind spot or dimming of vision in one eye, that combination warrants prompt evaluation.
Acute Angle-Closure Glaucoma
This is the eye emergency most people haven’t heard of. Acute angle-closure glaucoma happens when the drainage system inside the eye becomes suddenly blocked, causing pressure to spike rapidly. Symptoms include severe eye pain, headache, nausea and vomiting, seeing halos or rainbow-colored rings around lights, eye redness, and sudden vision loss.
The combination of intense eye pain with nausea and visual changes is the key pattern. This condition can cause permanent vision damage within hours if the pressure isn’t relieved, so it requires emergency treatment, not a next-day appointment.
Signs That Eye Pain Needs Urgent Attention
Most eye pain resolves with rest, lubricating drops, or a short course of treatment. But certain symptoms alongside eye pain mean you should seek emergency care rather than waiting:
- Sudden vision changes in one or both eyes
- Severe pain with headache, fever, or intense light sensitivity
- Nausea or vomiting accompanying the eye pain
- Halos around lights that you haven’t seen before
- Blood or pus coming from the eye
- Inability to open or move the eye
- Chemical splash or foreign object that won’t flush out
- Swelling in or around the eye
Any of these, alone or in combination, can indicate a condition where hours matter. Mild, bilateral eye discomfort that improves with rest or drops is almost always benign. Sudden, severe, one-sided eye pain with vision changes is the pattern that should move you toward immediate care.