What Causes A Burst Blood Vessel In The Eye? The Reason

A burst blood vessel in the eye looks alarming, but it is usually harmless. The medical name is a subconjunctival hemorrhage. It happens when a tiny blood vessel breaks just beneath the clear surface of the eye, and blood pools in the white part. The most common causes are minor trauma, straining, coughing, sneezing, or even rubbing your eye too hard. In most cases, it clears up on its own within one to two weeks without treatment.

What Causes A Burst Blood Vessel In The Eye

The white part of your eye is covered by a thin, transparent membrane called the conjunctiva. It contains many small, fragile blood vessels. When one of those vessels breaks, blood leaks out and spreads between the conjunctiva and the white part of the eye beneath it.

Because the space is so thin, even a small amount of blood spreads out widely. That is why a burst vessel can look like a large red patch even though the amount of bleeding is tiny. The blood stays trapped under the conjunctiva and cannot drain away. It is absorbed by your body over time.

The most common triggers are everyday actions that briefly raise pressure in your veins. Sneezing, coughing, heavy lifting, vomiting, or straining on the toilet can all do it. Rubbing your eye vigorously is another frequent cause. Even a minor bump to the eye that you barely notice can break a vessel.

High blood pressure can also play a role. Some research suggests that people with hypertension may have more frequent subconjunctival hemorrhages. If you get these often, it is reasonable to have your blood pressure checked. But most people who get one have normal blood pressure and no underlying problem.

What Does A Burst Blood Vessel Look Like

A subconjunctival hemorrhage appears as a bright red patch on the white of the eye. The blood is flat and does not bulge. It can be small, like a dot, or large, covering most of the white area. The shape is irregular, and the edges are often slightly feathered rather than sharp.

The hemorrhage does not cross onto the colored part of the eye, the iris. It stays on the white sclera. If you see blood over the iris or inside the colored area, that is a different problem and needs medical attention.

Most people notice it because someone tells them, or because they look in a mirror. The eye itself usually feels fine. There is typically no pain, no change in vision, and no discharge. Some people feel a very slight scratchy sensation, similar to having an eyelash in the eye, but that usually fades quickly.

It is important to know that a subconjunctival hemorrhage does not affect your eyesight. The blood sits on the outside of the eye, not inside it. Your vision should remain completely normal. If your vision is blurry or you have eye pain, that points to a more serious condition.

When Should You See A Doctor

Most burst blood vessels in the eye do not require a doctor visit. If the hemorrhage is small, painless, and your vision is normal, you can simply wait for it to heal. It will change color over time, from bright red to yellowish, and then fade completely.

See a doctor if you have eye pain, changes in vision, or if the hemorrhage happened after a direct injury to the eye. These symptoms suggest something more serious than a simple broken vessel.

You should also seek medical advice if you get burst blood vessels in the eye repeatedly without a clear cause. Frequent episodes can sometimes signal an underlying issue such as high blood pressure or a bleeding disorder. If you take blood-thinning medication like warfarin or aspirin, mention any eye bleeding to your doctor.

One important distinction: if the blood appears inside the colored part of the eye or around the pupil, that is a hyphema. That is a different condition that requires urgent medical care. A subconjunctival hemorrhage never involves the iris or pupil.

How Long Does It Take To Heal

A subconjunctival hemorrhage typically resolves in one to two weeks. The bright red color fades to a darker red, then to a yellowish or brownish shade, and finally disappears completely. This color change is normal. It happens as your body breaks down and absorbs the trapped blood.

The healing process follows a predictable pattern. In the first few days, the patch may actually look slightly larger or more intense before it starts to fade. This is not a sign that the bleeding is continuing. It is just the blood spreading slowly under the conjunctiva.

There is no treatment that speeds up healing. The body clears the blood on its own schedule. Artificial tears can help if the eye feels slightly dry or scratchy, but they do not make the blood go away faster. Warm compresses are sometimes suggested, but there is no strong evidence that they change the healing time.

Do not take aspirin or ibuprofen specifically for a burst blood vessel. These medications thin the blood and may slow down how quickly your body absorbs the trapped blood. If you take them regularly for another condition, do not stop without talking to your doctor first.

Can You Prevent A Burst Blood Vessel

You cannot fully prevent a subconjunctival hemorrhage. The blood vessels in the eye are fragile, and everyday actions can break them. But you can reduce your risk in a few practical ways.

Avoid rubbing your eyes vigorously. If your eyes feel itchy, use artificial tears or a cold compress instead. When you need to cough or sneeze, there is no way to prevent the pressure change, but you can avoid holding your breath during heavy lifting. Breathe out as you lift rather than straining with your breath held.

Keeping blood pressure in a healthy range may reduce the frequency of these hemorrhages. If you have hypertension and get burst blood vessels often, talk to your doctor about whether your blood pressure is well controlled. The link between high blood pressure and eye hemorrhages is real, but managing blood pressure is about overall health, not just preventing a red eye.

Wearing protective eyewear during sports or yard work can prevent the minor trauma that sometimes causes a broken vessel. This is especially important if you have had a hemorrhage from a bump or impact before.

What To Do If You Get One

If you notice a burst blood vessel in your eye, the first step is to confirm that your vision is normal and you have no pain. If both are true, you do not need urgent care. You can simply monitor it over the next few days.

You do not need to stop normal activities. A subconjunctival hemorrhage does not require rest, eye patches, or time off work. You can continue to read, use screens, and exercise as usual. The hemorrhage does not interfere with any of these activities.

Cold compresses applied to the closed eyelid in the first day or two may feel soothing, but they do not change the outcome. The blood will be absorbed at the same rate either way. If the eye feels dry, over-the-counter artificial tears are safe to use.

Watch for any change in symptoms. If pain develops, if vision becomes blurry, or if the red area grows over several days, contact an eye doctor. These are not typical for a simple subconjunctival hemorrhage and warrant a professional examination.