A bleeding eye looks alarming, but what you should do depends entirely on where the blood is and how it got there. A bright red patch on the white of your eye is usually a broken blood vessel called a subconjunctival hemorrhage, which is harmless and clears up on its own in one to two weeks. Blood pooling over your iris (the colored part of your eye), pain, or any change in vision is a different situation that needs prompt medical attention.
Identify Where the Blood Is
The single most important step is figuring out what type of bleeding you’re dealing with, because the two main types have very different levels of urgency.
A subconjunctival hemorrhage is blood trapped under the clear membrane covering the white of your eye. It looks like a vivid red or dark patch on the sclera (the white part), almost like a blood blister. It’s painless, doesn’t affect your vision, and is by far the most common kind of eye bleeding. Sneezing hard, coughing, straining, or even rubbing your eye can cause one.
A hyphema is blood collecting inside the front chamber of the eye, right over the iris. It looks like blood is sitting where your eye color is. Hyphemas hurt, and they almost always result from a direct blow or injury. Both types can happen at the same time after trauma, but pain is the key dividing line. If your eye hurts and you can see blood in or around the iris, treat it as an emergency.
When to Go to the ER
Get emergency care if you have any of the following alongside a bleeding eye:
- Vision loss, even partial or in one eye only
- Pain inside the eye, not just surface irritation
- A visible wound on or near the eye
- Blood or clear fluid leaking from the eye
- Something stuck in the eye
- The bleeding followed a blow, fall, or impact
Any of these signs suggests the deeper structures of the eye could be damaged. Time matters because pressure can build inside the eye or a secondary bleed can occur in the hours after the initial injury.
Immediate First Aid for an Injured Eye
If the bleeding came from a hit, scratch, or foreign object, follow these steps before you get to a doctor:
Wash your hands with soap and water before touching anywhere near the eye. If the eye was cut or struck, gently hold a clean, cool compress against it to reduce swelling and slow bleeding, but do not press down. Pressure on an injured eye can make things worse. Do not rub the eye, squeeze the eyelids shut, or try to remove anything that appears stuck. If an object is embedded in the eye, leave it in place.
Do not use cotton swabs, tweezers, or any tool on the colored part of the eye. If you wear contact lenses, leave them in unless a chemical splash occurred or rapid swelling is making the lens dangerous to keep in. Trying to remove contacts from a damaged eye can cause additional harm.
If a small loose particle (like dust or an eyelash) is sitting on the surface, you can try gently rinsing with clean water or artificial tears. Position the dropper above the outer corner of the eye and let the liquid flow across. Don’t touch the eye itself with the bottle tip.
Caring for a Painless Broken Blood Vessel
If you woke up with a red patch on the white of your eye, have no pain, and your vision is perfectly normal, you’re almost certainly dealing with a subconjunctival hemorrhage. No treatment is needed. The blood is trapped in a small space and your body reabsorbs it gradually. Most cases clear within 7 to 14 days, though larger patches can take up to 21 days to fully disappear. The red may shift to yellow or green before fading, similar to a bruise.
For comfort, over-the-counter artificial tears can relieve any mild scratchiness or dryness you feel. Avoid rubbing the eye, which could irritate the area or trigger additional bleeding. There’s no way to speed up the healing process.
Common Causes and Risk Factors
Painless blood vessel breaks on the white of the eye happen more often than most people realize. Everyday triggers include hard sneezing, vomiting, heavy lifting, straining during a bowel movement, or simply rubbing your eyes too vigorously. Sometimes there’s no obvious cause at all.
Certain medications make these episodes more likely. Blood thinners like warfarin, aspirin, and clopidogrel increase the chance of spontaneous bleeding under the conjunctiva. Aspirin and warfarin together are especially associated with recurrent episodes. If you take any anticoagulant or antiplatelet drug and notice repeated eye bleeding, mention it to your doctor. The medication may still be worth taking, but the pattern is worth tracking.
High blood pressure and diabetes also play a role. Diabetes damages the tiny blood vessels in the eye over time, a process called diabetic retinopathy. When high blood pressure is added to the picture, the risk climbs further. One large study found that people with diabetes and high blood pressure had a 38% greater risk of developing the advanced form of retinopathy that involves bleeding inside the eye, compared to those with normal blood pressure. Keeping blood pressure well controlled made a measurable difference in reducing that risk.
What Happens at the Eye Doctor
If your bleeding eye requires professional evaluation, here’s what to expect. The doctor will likely use a slit lamp, a microscope with a bright light that lets them examine the front and back of your eye in detail. This is the standard tool for confirming a hyphema and assessing how much blood has collected.
For injuries, they’ll check for scratches on the cornea, foreign bodies lodged in the eye, and damage to deeper structures. If blood inside the eye is blocking their view of the retina, they may use an ultrasound scan of the eye (painless, done with a small probe on the closed eyelid) to check for retinal detachment or other problems behind the blood. In trauma cases, a CT scan of the eye socket may be needed to rule out fractures or objects lodged deep in the tissue.
If the doctor suspects the bleeding originated from the retina, as it might in someone with diabetes or age-related conditions, they’ll dilate your pupils and examine the back of the eye directly. Additional imaging can map the blood vessels in fine detail to pinpoint the source.
Recovery and Activity After an Eye Injury
Recovery depends heavily on what caused the bleeding. A simple subconjunctival hemorrhage requires nothing more than patience. You can go about your normal routine, including screen time and reading, without concern.
A hyphema or more serious injury is a different story. Your doctor will likely tell you to avoid all exercise, especially contact sports, while the eye heals. The concern is rebleeding: a second hemorrhage in the days after the initial injury is often worse than the first and can threaten vision. Swimming is specifically unsafe during recovery because of infection risk and water pressure. Even bending over or heavy lifting may be restricted, since these raise pressure inside the eye.
For corneal scratches, most minor abrasions heal within a few days. You should not rub the eye during this time. If symptoms like pain, light sensitivity, or blurred vision persist beyond three days, a follow-up with an eye specialist is warranted. Eye patching, once standard practice, is no longer recommended for most corneal abrasions because it doesn’t speed healing and can be uncomfortable.
Recurring Eye Bleeding
A single painless broken blood vessel is rarely a sign of anything serious. But if it keeps happening, it’s worth investigating. Recurrent subconjunctival hemorrhages can signal uncontrolled high blood pressure, a bleeding disorder, or a medication side effect. Your doctor may check your blood pressure, review your medications, and run basic blood work to look for clotting problems. In most cases, the cause turns out to be something manageable, but repeated episodes shouldn’t be ignored.