A red dot or red patch on the white of your eye is almost always a subconjunctival hemorrhage, which is a tiny broken blood vessel just beneath the clear surface of your eye. It looks alarming but is typically painless, harmless, and heals on its own within one to two weeks without any treatment.
The eye’s surface (the conjunctiva) is covered in tiny, fragile blood vessels. When one of them breaks, blood gets trapped in a small area, creating a bright red spot that can range from a tiny pinpoint to a larger patch that spreads across the white of the eye. Because the blood has nowhere to go, it sits there visibly until your body gradually reabsorbs it.
Common Causes of a Burst Blood Vessel
Most of the time, a subconjunctival hemorrhage happens after a brief spike in pressure through the small veins around your eye. You might not even remember the moment it happened. The most common triggers include:
- Coughing or sneezing, especially a hard or prolonged bout
- Straining, whether from lifting something heavy, pushing, or bearing down on the toilet
- Vomiting
- Rubbing your eye too hard
- A minor bump or poke to the eye
- Bending forward for an extended time
Contact lens wearers may notice these more often, since the lens can create minor friction against the conjunctiva. Eye surgery, even routine procedures like cataract removal, can also cause one. And sometimes there’s no identifiable cause at all. You simply wake up, look in the mirror, and see the red spot.
Medications and Health Conditions That Raise Your Risk
If you take blood-thinning medications like aspirin or warfarin, you’re more likely to develop a subconjunctival hemorrhage because your blood doesn’t clot as quickly, giving it more time to pool under the surface. This doesn’t mean you should stop taking your medication. It just explains why it happens more easily.
High blood pressure can also make these episodes more frequent. The elevated pressure puts extra strain on small blood vessels throughout your body, including the delicate ones on the surface of your eye. If you’re getting red spots in your eye repeatedly and you haven’t had your blood pressure checked recently, that’s worth looking into. Diabetes and blood clotting disorders can similarly increase the likelihood.
What Healing Looks Like
A subconjunctival hemorrhage follows a predictable pattern as it heals. The spot starts out bright red, then gradually shifts to darker red, then yellowish or brownish as the blood breaks down and your body clears it away. This color progression is similar to what happens with a bruise on your skin.
Most spots resolve completely within 7 to 14 days. Larger patches of blood can take up to three weeks. The spot may actually look worse before it looks better, spreading slightly as the trapped blood disperses across the conjunctiva. This is normal and not a sign of a new problem. There’s no way to speed up the process, though some people find that artificial tears help with any mild scratchiness they feel.
When a Red Spot Is Not a Burst Vessel
Not every red mark on your eye is a broken blood vessel. A few other possibilities are worth knowing about.
A conjunctival nevus is a small, pigmented spot on the white of your eye, similar to a mole or freckle on your skin. These are usually brownish but can sometimes appear reddish. They’re benign, but because there are rare cases where a nevus develops into melanoma over time, your eye doctor will want to monitor any spot that changes in size, shape, or color.
Episcleritis is inflammation of the thin tissue layer between the conjunctiva and the white of the eye itself. It creates a localized red or pink patch that can look like a blood spot but tends to come with a mild aching or tender sensation. It usually clears up on its own within a week or two, though anti-inflammatory drops can help if it’s uncomfortable.
A pinguecula is a yellowish, slightly raised bump on the conjunctiva that can become red and irritated. It’s caused by sun exposure, wind, and dry conditions over time, and it’s not dangerous, though it can be cosmetically noticeable.
Signs That Need Prompt Attention
A painless red spot with no vision changes is rarely an emergency. But certain symptoms alongside that red spot signal something more serious is going on. You should contact an eye care provider if:
- You have pain in or around the eye, not just mild irritation
- Your vision is blurry or changed in any way
- You’re extra sensitive to light
- There’s discharge from the eye
- The redness doesn’t improve after a week or lasts longer than two weeks
- You had a direct injury to the eye, especially a forceful one
- You have a fever along with the redness
Blood inside the eye itself, visible as a red layer pooling in front of the colored part of your eye (the iris), is a different and more urgent condition called a hyphema. This typically follows trauma and needs same-day evaluation.
What You Can Do Right Now
If your red dot is painless and your vision is fine, there’s genuinely nothing you need to do. Avoid rubbing the eye, which could irritate the area or cause additional tiny vessels to break. If the eye feels dry or scratchy, over-the-counter lubricating drops (artificial tears) can help with comfort but won’t make the spot disappear faster.
If you’re getting subconjunctival hemorrhages frequently, that pattern is worth mentioning to your doctor. Occasional ones are normal, especially if you’ve been sick with a cough or doing heavy physical activity. But recurring episodes can sometimes point to uncontrolled blood pressure, a clotting issue, or a medication side effect that’s worth reviewing.