A popped blood vessel in your eye looks alarming but is almost always harmless. The medical name is a subconjunctival hemorrhage, and in most cases it heals on its own within one to three weeks without any treatment. The bright red patch you see is simply blood that leaked under the thin, clear membrane covering the white of your eye after a tiny capillary broke. It doesn’t affect your vision and typically causes no pain.
What to Do Right Now
The short answer: very little. Your body reabsorbs the trapped blood on its own, and no medication or procedure speeds that process up. If the eye feels scratchy or mildly irritated, over-the-counter artificial tears can soothe it. Avoid rubbing the affected eye, since that friction can break additional capillaries or slow healing. You can continue your normal routine, including screen time and reading.
If you wear contact lenses, you can generally keep using them. However, if you develop eye pain or any change in your vision while wearing contacts, stop using them until you can get checked for an infection.
Do not use redness-reducing eye drops (the kind marketed to “get the red out”). They won’t clear the blood, and they can mask symptoms that would otherwise alert you to a more serious problem.
Why It Happened
The membrane over the white of your eye is packed with tiny, fragile capillaries. A brief spike in vein pressure is often enough to pop one. Common triggers include:
- Coughing, sneezing, or vomiting
- Straining on the toilet or while lifting something heavy
- Rubbing your eye too hard
- A bump or poke to the eye
- Bending forward for an extended time
Sometimes there’s no identifiable cause at all. You wake up, look in the mirror, and there it is. That’s completely normal and happens frequently in otherwise healthy people.
How It Heals
The red spot may actually look worse before it looks better. Over the first day or two, the blood can spread across more of the white of your eye, which is just gravity doing its work under the membrane. This doesn’t mean anything is wrong.
Over the next one to three weeks, your body breaks down and reabsorbs the blood. You’ll likely see the color shift from bright red to darker red, then to a yellowish or greenish tint, similar to a bruise fading on your skin. The whole process resolves without leaving any scar or lasting mark.
When It Could Signal Something Bigger
A single, painless episode with no vision changes is rarely a concern. But certain patterns and symptoms deserve medical attention:
- Vision changes: blurriness, double vision, or partial vision loss alongside the red spot.
- Pain in the eye: a true subconjunctival hemorrhage is painless. Pain suggests a different or additional problem.
- Trauma to the head or eye: if the hemorrhage followed a significant blow, you need an exam to rule out deeper damage.
- Bleeding that lasts longer than three weeks: this can point to an underlying condition that needs investigation.
- Frequent recurrence: if it keeps happening, your doctor may want to check your blood pressure, blood sugar, or clotting function.
Blood Thinners and Recurring Episodes
If you take blood-thinning medications like warfarin or daily aspirin, you’re more prone to subconjunctival hemorrhages because your blood doesn’t clot as efficiently. The hemorrhages can also appear larger and take longer to clear. This doesn’t necessarily mean your medication needs adjusting, but it’s worth mentioning to your prescribing doctor if it happens repeatedly. Do not stop or change your blood thinner on your own.
Health Conditions That Raise Your Risk
Certain chronic conditions make the blood vessels in your eye more fragile or more likely to bleed. High blood pressure is the most significant one. Elevated pressure in your blood vessels means those tiny capillaries in the eye are under more stress day to day. Diabetes and high cholesterol also increase the risk, as both can weaken small blood vessels over time. Blood clotting disorders, while less common, are another factor.
Contact lens wearers face a slightly higher risk too. Lenses can create friction and dryness on the surface of the eye, which promotes irritation and makes those small vessels more vulnerable to breaking.
A single popped blood vessel in your eye doesn’t mean you have any of these conditions. But if it keeps happening, or if you already know you have high blood pressure or diabetes, it’s a useful signal to make sure those conditions are well managed. Recurrent hemorrhages that happen more than two or three times may warrant a workup for clotting disorders or other systemic issues.