If your eye hurts, the first step is figuring out whether the pain is on the surface or deeper inside, because that tells you whether you can manage it at home or need professional help. Most eye pain comes from something minor like dryness, a small scratch, or strain, and it resolves on its own within a day or two. But certain types of eye pain signal conditions that can permanently damage your vision within hours, so knowing the warning signs matters.
When Eye Pain Is an Emergency
Some combinations of symptoms require immediate medical care. Call 911 or get to an emergency room if your eye pain comes with any of the following:
- Sudden vision changes or vision loss
- Nausea or vomiting alongside the pain
- Halos appearing around lights
- Severe headache, fever, or extreme light sensitivity
- A chemical splash or foreign object stuck in your eye
- Blood or pus coming from the eye
- Inability to move your eye or keep it open
- Significant swelling in or around the eye
One condition that demands urgency is acute angle-closure glaucoma, where pressure inside the eye spikes rapidly, often above 40 mmHg (normal is under 21). This causes intense eye pain, nausea, halos around lights, and blurred vision. Without prompt treatment to lower the pressure, permanent damage to the nerve cells at the back of the eye can begin within weeks. If you experience sudden, severe eye pain with any vision disturbance, treat it as an emergency.
Surface Pain vs. Deep Pain
Where you feel the pain tells you a lot about what’s causing it. Most eye pain falls into one of two categories.
Surface pain feels like something is in your eye, or like scratching, burning, or stinging. It’s usually related to the cornea, the clear front layer of your eye. Common causes include corneal abrasions (scratches), dry eyes, contact lens irritation, and infections like conjunctivitis. Light sensitivity often accompanies surface pain, especially when the cornea is involved.
Deep or orbital pain is an aching or throbbing sensation that feels like it’s behind or inside the eye. This type of pain can come from sinus infections, optic nerve inflammation, or orbital cellulitis (an infection of the tissue around the eye). Deep pain that worsens when you move your eyes is a particularly important sign. Optic neuritis, for example, causes pain with eye movement along with vision loss that develops over several days, and it needs prompt evaluation. Cluster headaches can also produce intense stabbing pain around one eye, often with tearing, a drooping eyelid, and a runny nose on the same side.
The Most Common Causes
Corneal Abrasion
A scratched cornea is one of the most frequent reasons for sudden eye pain. It can happen from a fingernail, a piece of dust, or even rubbing your eyes too hard. The pain is sharp and immediate, and your eye will water heavily and become sensitive to light. The good news: most corneal abrasions heal in 24 to 72 hours. Larger scratches covering more than half the corneal surface may take four to five days, but they still rarely lead to complications. Your doctor may prescribe antibiotic ointment to prevent infection while the scratch heals.
Dry Eyes
If your eyes ache, burn, or feel gritty, especially later in the day or after screen time, dryness is a likely culprit. Your eyelids contain tiny glands that produce an oily layer to keep your tears from evaporating. When those glands get clogged, the tear film breaks down and the surface of your eye becomes irritated. Preservative-free artificial tears are the safest first option for relief.
Conjunctivitis (Pink Eye)
Bacterial conjunctivitis typically produces a thick, yellow-green discharge that crusts your eyelids shut overnight, along with redness and sometimes blurred vision. Viral conjunctivitis tends to be more watery. Allergic conjunctivitis is the itchiest of the three and usually shows up alongside other allergy symptoms like sneezing or a runny nose. The distinction matters because bacterial cases may need prescription drops, while viral cases resolve on their own.
Contact Lens Problems
Contact lens wearers face a specific risk: bacterial keratitis, a corneal infection that causes pain, redness, blurred vision, light sensitivity, and discharge. Sleeping in your lenses is one of the biggest risk factors. If you wear contacts and develop eye pain, remove your lenses immediately and do not put them back in until you’ve been evaluated. Using contacts with a corneal infection can make the situation dramatically worse.
What You Can Do at Home
For mild eye pain without any of the emergency signs listed above, a few simple measures can help while you decide if you need professional care.
Use preservative-free artificial tears. These lubricate the surface and can relieve burning, grittiness, and mild irritation. They’re safe to use frequently throughout the day.
Try a warm compress for blocked glands or styes. A warm, damp cloth held over your closed eyelid for about five minutes raises the eyelid temperature enough to soften clogged oils in the glands along your lid margin. This works well for dry eye caused by gland blockage, styes, and general lid discomfort. You can repeat this several times a day.
Use a cold compress for allergies or swelling. If your eye pain is driven by allergic irritation or puffiness, a cool cloth or cold pack wrapped in a thin towel can reduce swelling and soothe itching. Cold works by constricting blood vessels and calming the inflammatory response.
Stop wearing contact lenses. Any time your eye hurts, switch to glasses until the pain fully resolves. Contacts trap bacteria against the cornea and slow healing.
Avoid redness-relief drops. Over-the-counter drops that “get the red out” contain a decongestant that temporarily shrinks blood vessels. The problem is rebound redness: when the drops wear off, your eyes become redder than before, and the cycle worsens over time. The American Academy of Ophthalmology recommends limiting these drops to no more than 72 hours of use. Preservative-free artificial tears are a better choice.
If a Chemical Gets in Your Eye
Chemical splashes require immediate action. Start flushing your eye with clean water right away, holding the eye open and letting water run over it continuously. Don’t wait to get to a hospital. Keep flushing during transportation to the emergency room, where medical staff will continue irrigation until the surface of your eye returns to a neutral pH. There is no maximum amount of flushing. The faster and longer you irrigate, the better the outcome. Do not try to neutralize the chemical with another substance. Plain water or saline is all you need.
When Pain Means Something More Serious
Certain patterns of eye pain point toward conditions that can affect your vision permanently if left untreated. Pain that gets worse over days rather than better, even mildly, deserves evaluation. Pain that comes with progressive vision loss, color vision changes, or a pupil that reacts differently than the other eye can indicate optic nerve involvement. Eye pain combined with restricted eye movement and eyelid swelling may signal orbital cellulitis, an infection that often starts in the sinuses and spreads to the eye socket.
Repeated episodes of eye pain also matter. If you keep getting the same type of discomfort, especially burning and light sensitivity, you may have an underlying condition like chronic dry eye or recurrent corneal erosion that benefits from targeted treatment rather than just artificial tears. A single episode of mild eye pain that clears up in a day is rarely concerning. A pattern is worth investigating.