A red dot on the white of your eye is almost always a subconjunctival hemorrhage, which is a tiny broken blood vessel just beneath the clear membrane covering your eye. It looks alarming but is usually painless, harmless, and clears up on its own within about two weeks. Understanding what caused it and what to watch for can save you an unnecessary trip to urgent care.
What’s Actually Happening in Your Eye
The white of your eye is covered by a thin, transparent membrane called the conjunctiva. This membrane is packed with tiny blood vessels (capillaries) that can break easily. When one of these capillaries ruptures, blood leaks into the space between the conjunctiva and the white of your eye. Because the blood has nowhere to go, it pools into a visible bright red patch or dot.
The blood isn’t absorbed right away, which is why the spot looks so vivid. Over the next several days, your body gradually reabsorbs it, and the red color may shift to yellow or green before disappearing entirely, similar to how a bruise fades on your skin.
Common Causes and Triggers
Anything that briefly spikes the pressure in your veins can pop one of these tiny vessels. Some of the most common triggers include:
- Sneezing, coughing, or vomiting
- Straining during heavy lifting, constipation, or intense exercise
- Rubbing your eyes forcefully
- Contact lens irritation
- Minor eye injury from something bumping or poking the eye area
Sometimes there’s no obvious trigger at all. You may wake up, look in the mirror, and just see it. That’s normal. These capillaries are fragile enough to break during sleep.
Blood-thinning medications and supplements (including aspirin, certain pain relievers, and fish oil) can make the bleeding more likely or more noticeable because they slow clotting. High blood pressure is another factor. If you’re getting these red spots repeatedly without a clear cause, it may be worth having your blood pressure checked, since frequent hemorrhages can sometimes signal that your blood pressure is running higher than it should be.
How Long It Takes to Clear
Most broken blood vessels in the eye heal within two weeks. Smaller dots may fade in just a few days. Larger spots, ones that spread across a wider area of the white, can take three weeks or slightly longer. The spot won’t get smaller every day in a perfectly linear way. It often changes color and shape as your body reabsorbs the blood, and it may look worse before it looks better.
There’s no drop or medication that speeds up the process. Artificial tears can help if the spot feels mildly scratchy or dry, but the healing is entirely internal. Avoid rubbing the affected eye, since that can re-irritate the area or break another vessel.
Other Causes of a Red Spot
While a broken blood vessel is by far the most common explanation, a few other conditions can produce a visible red spot or bump on the eye’s surface.
Pinguecula
A pinguecula is a small, raised growth on the conjunctiva. It’s usually yellowish rather than red, though it can become irritated and develop reddish blood vessels around it. It typically appears on the side of the eye closest to the nose. These growths contain deposits of protein, fat, or calcium and are strongly linked to long-term sun exposure, wind, and dust. They don’t require treatment unless they become persistently irritated.
Pterygium
A pterygium is a fleshy, wedge-shaped growth that contains visible blood vessels. It sometimes starts as a pinguecula. It can remain small, but unlike a simple broken blood vessel, it has the potential to grow large enough to extend onto the cornea (the clear front surface of your eye), which can eventually affect vision. The same environmental factors drive it: UV light, wind, and dust.
Conjunctival Hemangioma
Less commonly, a persistent bright red patch can be a conjunctival hemangioma, a benign cluster of blood vessels. These tend to be rounded or nodular, slowly progressive, and sometimes have slightly irregular borders. Small ones are typically painless and may cause only mild irritation. The key difference from a broken blood vessel is that a hemangioma doesn’t fade and reabsorb over two weeks. It stays.
Signs That Need Attention
A straightforward subconjunctival hemorrhage causes no pain and no vision changes. If your red spot comes with any of the following, something else may be going on:
- Pain in the eye, especially sharp or deep pain
- Blurred or decreased vision
- Sensitivity to light
- Discharge or crusting
- A red spot that hasn’t faded at all after three weeks
- Repeated episodes without an obvious cause like sneezing or straining
Pain or vision changes in particular suggest that the problem may involve deeper structures of the eye rather than just a surface vessel. Recurring hemorrhages without a clear mechanical trigger are worth mentioning to your doctor, since they can occasionally point to an underlying blood pressure or clotting issue that’s worth investigating.