A scratched eye, known medically as a corneal abrasion, produces a distinct set of symptoms that are hard to ignore: sharp pain, excessive tearing, sensitivity to light, and a persistent feeling that something is stuck in your eye even when nothing is there. Most scratches heal on their own within one to three days, but knowing what you’re dealing with helps you avoid making it worse and tells you when to get professional help.
The Telltale Signs of a Scratched Eye
The cornea is one of the most nerve-dense tissues in your body, so even a tiny scratch can produce intense symptoms. The most common sign is a sharp, stinging pain that doesn’t go away when you close your eye. Unlike dry eye or mild irritation, the pain from a corneal abrasion persists whether your eye is open or closed.
Other symptoms that point to a scratch rather than general irritation:
- Foreign body sensation: A gritty feeling, like sand is trapped under your eyelid, even after flushing your eye with water.
- Excessive tearing: Your eye produces so many tears they run down your cheek constantly. A scratched eye can even cause a runny nose on the same side.
- Light sensitivity: Bright light feels painful enough that you want to keep the eye shut or stay in a dark room.
- Redness: The white of the eye turns pink or red around the area of the scratch.
- Blurred vision: If the scratch is near the center of the cornea, your vision in that eye may be noticeably fuzzy.
One reliable clue: if you instinctively want to cover the eye or can only keep it open comfortably in a dark room, that level of light sensitivity is characteristic of a corneal abrasion rather than a minor irritation.
How a Scratch Feels Different From Pink Eye
It’s easy to confuse a scratched eye with pink eye (conjunctivitis) since both cause redness and tearing. But the two feel quite different. A scratch causes sharp, persistent pain. Pink eye is primarily itchy, and the discomfort is more of an annoyance than something that makes you want to close your eye entirely.
Light sensitivity offers another clue. With a scratch, bright light can be genuinely unbearable. Pink eye may cause some sensitivity, but most people can still keep their eyes open in normal lighting. Pink eye also tends to start in one eye and spread to the other within a few days, while a scratch only affects the injured eye. And pink eye typically produces a thick, sticky discharge, especially in the morning, whereas a scratched eye produces clear, watery tears.
Recognizing a Scratch in Babies and Young Children
Babies and toddlers can’t tell you their eye hurts, so you’ll need to watch for behavioral cues. A child with a scratched eye will often hold the affected eye shut or blink excessively on that side. They may cry or turn away when exposed to light, and you’ll likely see heavy tearing from one eye only. Redness and a reluctance to let you touch their face near the eye are additional signs. Fingernails, toys, and even their own hands are common culprits in young children.
What to Do (and What Not to Do)
If you think your eye is scratched, what you avoid doing matters as much as what you do. The American Academy of Ophthalmology recommends against several common instincts that can make things worse:
- Don’t rub your eye. This can deepen or widen the scratch.
- Don’t touch your eye with fingers, cotton swabs, or tissues. You’re more likely to cause additional damage than to remove whatever scratched you.
- Don’t wear contact lenses. Contacts slow healing and increase the risk of infection.
- Don’t use redness-relieving eye drops. Over-the-counter drops designed to reduce redness can actually cause pain on a scratched cornea, and they won’t speed healing.
What you can do: blink gently several times to let natural tears flush the eye. If you suspect a loose particle, you can rinse the eye with clean saline solution or clean water. If the pain is significant, keep the eye closed and avoid bright light until you can see a provider.
How a Doctor Confirms the Scratch
An eye care provider can confirm a corneal abrasion in minutes using a simple, painless test. A small strip of blotting paper soaked in a yellow-orange dye is touched to the surface of your eye (sometimes the dye is delivered as a drop that also contains a numbing agent). You blink a few times to spread the dye across your cornea. The provider then shines a blue light at your eye. Any scratch or damaged area absorbs the dye and glows green under the light, making even tiny abrasions clearly visible. The size, shape, and location of the green-stained area tells the provider how serious the scratch is and what likely caused it.
How Long Healing Takes
Most corneal abrasions heal within 24 to 72 hours. Small scratches often close up in a single day. Larger abrasions covering more than half the cornea’s surface can take four to five days. During healing, your provider may prescribe drops to prevent infection and keep the eye lubricated. You’ll typically be told to avoid contact lenses until the eye has fully healed and your provider clears you to wear them again.
Pain usually improves noticeably within the first 24 hours. If your symptoms are getting worse after a day or two rather than better, that’s a sign something else may be going on, such as an infection or a deeper injury.
When a Scratch Becomes an Emergency
Most scratches heal without complications, but certain signs warrant urgent care or an emergency room visit:
- You know something pierced your eye, not just scratched it.
- You’re in extreme pain that isn’t improving.
- Your vision has suddenly decreased.
- Fluid other than tears is leaking from the eye.
These signs can indicate a deeper injury to the eye that requires immediate treatment to prevent permanent damage.
Why Old Scratches Can Come Back
Some people experience a frustrating condition where the pain and tearing from a healed scratch return weeks, months, or even years later. This happens when the outer layers of the cornea didn’t bond back together properly during the original healing process. The layers can separate again, typically upon waking (when your eyelid sticks slightly to the dry cornea overnight and pulls the surface layer loose as you open your eye).
This condition causes the same symptoms as the original injury: sudden sharp pain, tearing, light sensitivity, and blurred vision. It can cause long-term damage to the cornea if it keeps recurring, so repeated episodes of eye pain in an eye you’ve previously scratched are worth bringing up with an eye care provider.