A burst blood vessel in the eye looks alarming but heals on its own within about two weeks without any treatment. The medical name is a subconjunctival hemorrhage, and it happens when a tiny blood vessel breaks just beneath the clear surface of the eye, spreading a bright red patch across the white. There’s nothing you need to do to fix it, but a few simple steps can keep you comfortable while it clears.
What the Healing Process Looks Like
The red patch follows a predictable pattern similar to a bruise on your skin. It starts as a vivid, sometimes shocking red. Over the next several days, the color shifts through darker shades and may take on a yellowish or brownish tint as your body reabsorbs the trapped blood. The white of your eye often looks slightly yellow right before it fully clears. The entire process typically wraps up in one to two weeks, though larger patches can take a bit longer.
During this time, the spot may actually look worse before it looks better. The blood can spread across a wider area of the eye’s surface in the first day or two before your body begins breaking it down. This is normal and not a sign that anything has gone wrong.
How to Stay Comfortable While It Heals
Since the hemorrhage resolves without medical intervention, care is really about comfort. Artificial tear drops can soothe any scratchiness or mild irritation you feel. You can use them as often as needed throughout the day.
The single most important thing to avoid is rubbing your eye. Rubbing can irritate the area, slow healing, or even cause another vessel to break. If your eye feels itchy or dry, reach for the artificial tears instead. Beyond that, you can go about your normal routine. There are no activity restrictions for a standard burst blood vessel.
Common Causes
A burst blood vessel can happen from surprisingly minor strain. Sneezing, coughing, vomiting, heavy lifting, or straining on the toilet can all spike pressure in the tiny vessels on the eye’s surface enough to rupture one. Sometimes it happens during sleep, and you simply wake up with a red eye and no idea what caused it.
Certain factors raise the risk. Blood-thinning medications, including aspirin and prescription anticoagulants, make vessels more prone to bleeding and can cause the resulting hemorrhage to be larger. High blood pressure puts ongoing stress on small blood vessels throughout the body, including in the eyes. Contact lens irritation and vigorous eye rubbing are also frequent triggers.
When a Red Eye Needs Medical Attention
A typical burst blood vessel causes no pain and no vision changes. The blood sits on the white of the eye, and the only symptom is how it looks. If your experience matches that description, you can safely let it heal at home.
A different and more serious condition called a hyphema involves bleeding inside the eye itself, where blood pools in front of the colored part of your eye (the iris) rather than on the white surface. The key differences are clear: a hyphema hurts, blurs your vision, and may cause nausea or vomiting from dangerously high pressure inside the eye. If you notice any of those symptoms alongside eye redness, that warrants urgent medical evaluation.
Recurrent burst blood vessels, meaning you keep getting them every few weeks or months, can signal an underlying issue worth investigating. High blood pressure, blood clotting disorders, or problems with blood-thinning medication are all possibilities. A single episode rarely means anything is wrong, but a pattern deserves a conversation with your doctor to check for systemic causes.
Reducing the Risk of It Happening Again
You can’t prevent every burst blood vessel, but you can lower the odds. Stop rubbing your eyes, even when they itch. Use artificial tears to manage dryness or irritation instead. If you take blood thinners and notice repeat episodes, talk to your prescriber about whether your dosing needs review.
Managing blood pressure is one of the most effective long-term strategies. Consistently high blood pressure weakens small vessels over time, making them more likely to break under even minor strain. Wearing protective eyewear during sports or activities with impact risk also helps prevent the kind of trauma that can trigger a hemorrhage.