A popped blood vessel in your eye happens when a tiny vessel in the clear membrane covering the white of your eye bursts and leaks blood. The medical name is a subconjunctival hemorrhage, and it’s one of the most common eye conditions, affecting roughly 1 in 167 people each year. It looks alarming, producing a bright red patch on the white of your eye, but it’s almost always harmless and heals on its own.
What Actually Happens in Your Eye
Your eye’s white surface is covered by a thin, clear tissue called the conjunctiva. Tiny blood vessels run through this membrane, and they’re fragile. When one of these vessels bursts, blood leaks into the space between the conjunctiva and the white of the eye. Because the blood has nowhere to drain, it pools and spreads, sometimes covering a large portion of the white. Your body can’t absorb it immediately, which is why the red patch lingers for days or weeks before fading.
Common Physical Triggers
Most popped eye blood vessels come from a sudden spike in pressure in your veins. Anything that briefly raises that pressure can do it. The most common physical triggers include:
- Coughing or sneezing hard, especially during a cold, flu, or allergy attack
- Straining during a bowel movement or while lifting something heavy
- Vomiting
- Rubbing your eyes vigorously
Sometimes you’ll notice the red spot after waking up with no idea what caused it. That’s normal. Many subconjunctival hemorrhages happen without any obvious trigger at all.
Contact Lenses and Eye Rubbing
If you wear contact lenses, the simple act of putting them in or taking them out puts pressure on the eye’s surface. When your eyes are dry, that pressure is enough to pop a vessel. Lenses that aren’t cleaned properly can also introduce bacteria that cause inflammation, and inflamed tissue is more prone to bleeding.
To lower your risk, be gentle during lens insertion and removal. Putting a few drops of preservative-free artificial tears in your eyes before removing contacts reduces the suction effect and eases the lens off more smoothly.
Health Conditions That Raise Your Risk
Certain chronic conditions make the blood vessels on your eye more fragile or more likely to burst. High blood pressure and diabetes are two of the most significant. Both damage small blood vessels over time, making spontaneous rupture more likely. People age 65 and older have the highest rates of popped eye blood vessels, and that risk climbs further if they also have one of these vascular conditions.
A large study tracking over a decade of data in Taiwan found the incidence peaked in the 60 to 69 age group, occurring at more than five times the rate seen in teenagers. Women were also more frequently affected than men.
Medications That Increase Bleeding Risk
Blood-thinning medications make it easier for any blood vessel to bleed, including the ones on your eye. If you take a blood thinner (whether a prescription anticoagulant or even regular aspirin or ibuprofen), you may notice subconjunctival hemorrhages more often or find that the red patch takes longer to clear. The vessels still rupture from the same triggers, but your blood’s reduced ability to clot means more blood escapes and pools visibly.
What Recovery Looks Like
You won’t need treatment in most cases. The blood absorbs on its own within a few days to a few weeks, similar to how a bruise fades elsewhere on your body. The bright red patch may shift to darker red, then yellowish or brownish before disappearing entirely. Larger hemorrhages simply take longer.
The spot shouldn’t cause pain or affect your vision. If it feels slightly scratchy or irritating, over-the-counter artificial tears can help. Avoid rubbing the eye while it heals.
When It’s Something More Serious
A standard popped blood vessel sits on the white of your eye, doesn’t hurt, and doesn’t change your vision. A different condition called hyphema involves bleeding inside the eye itself, in the space between your cornea and the colored part of your eye (the iris). With hyphema, the blood appears in front of your eye color rather than on the white.
The key differences to watch for:
- Pain: A subconjunctival hemorrhage is painless. Hyphema causes eye pain.
- Vision changes: Blurred or distorted vision suggests bleeding inside the eye, not on the surface.
- Nausea and vomiting: These can signal dangerously high pressure building inside the eye.
- Blood location: Blood pooling in front of the iris, rather than on the white, points to hyphema.
Hyphema is a medical emergency. If you notice blood collecting in front of your iris, experience sudden vision changes, or have eye pain with nausea, seek emergency care immediately. A simple red patch on the white of your eye with no pain and no vision changes is almost certainly a harmless subconjunctival hemorrhage that will resolve on its own.