A burst blood vessel in the eye looks alarming but rarely needs medical treatment. The red patch you’re seeing is called a subconjunctival hemorrhage, and it happens when a tiny blood vessel breaks in the clear tissue covering the white of your eye. The blood gets trapped between that tissue and the eye’s surface, creating a vivid red spot that can spread across a large area. It typically clears on its own within one to three weeks.
Why It Happened
The clear tissue covering the white of your eye, called the conjunctiva, contains dozens of tiny blood vessels. These vessels are fragile, and everyday actions can rupture them. Common triggers include a hard sneeze or coughing fit, vomiting, straining (like heavy lifting), rubbing your eye too aggressively, or bumping or poking the eye.
Some people are more prone to these bleeds. High blood pressure puts extra strain on small blood vessels throughout the body, including the eye. Blood-thinning medications also increase the risk because they slow clotting, allowing even a minor vessel break to produce a larger, more visible bleed. In many cases, though, no clear cause is ever identified. You simply wake up with it.
Newborns sometimes develop subconjunctival hemorrhages too, caused by the pressure changes their bodies experience during delivery. This resolves on its own and isn’t a sign of a problem.
How to Treat It at Home
There’s no way to speed up the healing process. The blood has to be reabsorbed naturally by your body, much like a bruise fading on your skin. What you can do is manage any mild discomfort while you wait.
For the first 24 hours, a cold compress held gently against the closed eyelid can reduce any swelling. After the first day, switching to a warm compress may feel more soothing. If the eye feels scratchy or irritated, over-the-counter artificial tears can help. These lubricate the surface and relieve that gritty sensation without interfering with healing.
Avoid rubbing the affected eye. Rubbing can re-irritate the area or even cause a new vessel to break. If you take aspirin or another blood thinner for a medical condition, don’t stop taking it because of the hemorrhage. Continue your medication as prescribed.
What Healing Looks Like
The red patch will change color as it heals, shifting from bright red to darker red, then sometimes to yellow or green before disappearing entirely. This color progression is normal and follows the same pattern as a bruise anywhere else on the body. The blood is simply being broken down and reabsorbed.
Most subconjunctival hemorrhages resolve completely within two to three weeks. Larger bleeds that cover more of the white of the eye take longer than small spots. Your vision should not be affected at any point during healing. The bleeding sits on the surface of the eye, not inside it.
When the Problem Is More Serious
A subconjunctival hemorrhage is painless. If your eye hurts, that’s a signal something else may be going on. One condition worth knowing about is hyphema, which is bleeding inside the eye rather than on its surface. With hyphema, blood collects in front of your iris (the colored part of your eye) rather than on the white. It causes pain, blurred or distorted vision, and sometimes nausea or vomiting from dangerous pressure building inside the eye. Hyphema is a medical emergency, most often caused by a direct blow or injury to the eye.
You should get your eye examined if you notice any of the following alongside the red patch:
- Pain in the eye, not just mild scratchiness
- Changes in vision, including blurriness or light sensitivity
- Bleeding that occurred after a forceful injury to the eye or head
- Blood that appears in front of your iris rather than on the white
- Frequent recurrence, where you keep getting burst vessels without an obvious trigger
Recurring hemorrhages can sometimes point to uncontrolled high blood pressure or a clotting issue that hasn’t been diagnosed yet. If it keeps happening, your eye doctor will likely recommend further testing to look for an underlying cause.
Reducing Your Risk Going Forward
You can’t prevent every subconjunctival hemorrhage, but a few habits lower your odds. Resist the urge to rub your eyes, especially if they feel dry or itchy. Use artificial tears instead. If you have seasonal allergies that make your eyes itch, treating the allergies directly helps you avoid the rubbing that causes vessel breaks.
Managing blood pressure is one of the most effective long-term strategies. Chronically elevated blood pressure weakens small vessels over time, making them more likely to rupture from minor triggers. If you strain frequently during exercise or heavy lifting, exhaling through the effort rather than holding your breath reduces the spike in pressure that can rupture eye vessels.
Protective eyewear during sports or any activity where something could hit your eye prevents trauma-related hemorrhages and the more serious internal bleeding that can accompany them.