14 Common Causes of Burst Blood Vessel in the Eye

2. An Increased Stroke Risk

A burst blood vessel in your eye can sometimes point to problems that also raise your stroke risk, since both can share the same root causes in your body. High blood pressure, high blood sugar, and heart rhythm problems can weaken or clog blood vessels in both the eye and brain. Lifestyle choices such as smoking, heavy alcohol use, low activity, poor sleep, and long-term stress add to this strain. Age and family history also affect risk.

Changes in vision, trouble speaking, facial drooping, or sudden weakness can occur when blood flow to the brain drops. These signs may appear with or without eye changes and require prompt medical attention when they develop. Seeing repeated burst vessels in your eye can signal ongoing vessel stress and show a connection between eye health and brain health. Discussing these changes with a healthcare professional should be the next step when this pattern appears.

3. Rubbing the Eyes

Rubbing your eyes when they feel itchy, tired, or dry puts direct pressure on the small blood vessels on the eye’s surface, which can cause one to break and create a red spot. The conjunctiva holds many tiny blood vessels, and a sudden or strong rub makes it easier for a vessel to leak blood. This often happens after waking up, a long day of screen use, or in situations like allergies, dry air, tiredness, or contact lens discomfort. Rubbing harder when your eyes feel irritated raises the risk of a burst vessel over time.

The blood usually clears on its own within days to a couple of weeks, and rubbing does not cause deeper eye damage in most cases. Avoiding repeated eye rubbing helps reduce surface strain and lowers the chance of another red spot forming. Using clean hands, gentle blinking, or short breaks from screens can limit irritation that leads to rubbing.

4. Chronic Vomiting

Chronic vomiting means you throw up often over time, and each episode raises pressure in your head, neck, and eyes, which can cause small blood vessels on the eye surface to break.

Straining during vomiting pushes blood into fragile eye vessels, so you may notice a bright red patch after vomiting. Several health problems can lead to repeated vomiting, such as stomach infections, ongoing acid reflux, inner ear problems, certain drug side effects, and eating disorders.

Dehydration from vomiting can make blood thicker, which adds stress to small vessels, and actions like coughing or gagging during vomiting can further increase pressure on your eyes. A burst blood vessel from vomiting usually looks alarming but causes no pain or vision loss, and the redness fades as your body absorbs the blood. Frequent vomiting with eye bleeding points to ongoing strain.

5. Eye Infections

Eye infections can cause a burst blood vessel when swelling and irritation raise pressure in small surface vessels, which leads to a bright red patch on the white of your eye. Infections from bacteria, viruses, or fungi, such as pink eye or eyelid infections, can affect one or both eyes and may spread through touch.

When your eye fights an infection, blood flow increases, and tiny vessels near the surface can weaken, so a sudden cough, sneeze, or eye rubbing can cause one to break. Symptoms like redness, itching, swelling, or discharge often accompany infections.

Children and adults can both get infectious eye problems, and contact lens use increases risk. A burst vessel linked to infection usually clears as the infection settles, with the red area fading over days to weeks. However, eye pain, thick discharge, light sensitivity, or blurred vision suggest a more serious infection.

6. Serious Eye Strain

Focusing for long hours without rest on screens, small text, or in poor lighting puts heavy strain on your eyes and raises pressure in tiny blood vessels on the eye surface. Strain can lead to dryness, which often causes rubbing, and rubbing adds direct pressure that can cause a small vessel to break. Eye strain can also trigger tight muscles around your eyes and face. This tension increases pressure inside and around the eye.

Common causes include long screen time, reading without breaks, using devices too close to your face, and working in dim or harsh light. A burst blood vessel from eye strain does not affect your sight, and the blood clears as your body absorbs it over time.

Headaches, burning sensations, blurred focus, or light sensitivity often appear with severe eye strain. Adjusting screen distance, improving lighting, and scheduling regular visual breaks help reduce repeated strain that can stress surface eye vessels.

7. Overtiredness

Overtiredness raises the chance of a burst blood vessel in your eye because your body struggles to recover from daily strain when you lack rest. Lack of sleep can cause short-term rises in blood pressure, which may break a small vessel and lead to a bright red patch.

Overtiredness also leads to more eye rubbing and dryness, which weakens delicate vessels and makes them more fragile. Common causes include short sleep over many nights, long screen time without rest, physical exhaustion, or mental stress that limits deep sleep.

Heavy eyelids, slow focus, frequent yawning, and dull headaches often appear with overtiredness. A burst blood vessel from overtiredness usually causes no pain and does not affect vision, and the red area fades as your body absorbs the blood. Because of these effects, improving sleep habits and reducing late-night screen exposure support eye recovery and limit repeated strain on surface blood vessels.

8. Chronic Eye Conditions

Long-term eye conditions can make small blood vessels fragile, so pressure or irritation can break a vessel and cause a burst blood vessel on the white of your eye. These conditions increase the chance of sudden red spots even during normal activities.

Some of the most common chronic conditions that affect blood vessels in the eye include glaucoma, diabetes, and age-related changes. Glaucoma raises pressure inside your eye, which strains tiny blood vessels near the surface. Diabetes weakens vessel walls and slows healing. Age-related changes and chronic inflammation reduce blood flow and vessel strength.

These eye conditions do not just raise risk once. They create ongoing vessel stress that makes burst blood vessels more likely during normal daily activities. Managing underlying eye conditions, keeping eye pressure stable, and addressing chronic dryness or inflammation reduces repeated vessel strain and lowers the chance of frequent red spots.

9. Recent Eye Surgery

Recent eye surgery can cause a burst blood vessel because tools and pressure during the procedure can stress tiny blood vessels on the eye surface. This stress can cause one to break and leak blood.

You may notice a bright red patch on the white part of your eye, which usually does not hurt or affect your vision. This bleeding often happens after procedures like vision correction, cataract removal, or eyelid surgery, and rubbing your eye during recovery can increase the risk.

The blood sits under a clear skin that covers the white of your eye, and your body slowly absorbs it over one to two weeks. Pain, vision changes, swelling, or repeated bleeding signal the need for medical evaluation. Follow-up care after surgery supports healing and helps detect surface bleeding early. Clear instructions and proper recovery habits reduce added pressure on healing eye tissues during the first weeks.

10. Sneezing or Blowing the Nose

Sneezing or blowing your nose can briefly raise pressure inside your head, which may break a small blood vessel on the surface of your eye and cause a bright red patch on the white part. You often sneeze because of a cold, allergies, dust, or dry air. Blowing your nose hard during these times adds more force that can push blood into fragile vessels in your eye and make them burst.

The eye has many tiny blood vessels near the surface, which can break easily when pressure changes fast. Sneezing sends a strong burst of air through your nose and throat, briefly raising blood pressure in your head and eyes. You may notice the red spot right after a strong sneeze or nose blow.

Sneezing and nose blowing can also dry and irritate the inside of your nose, sometimes leading to nosebleeds. This irritation shows how delicate these blood vessels can be and the same weakness can affect vessels in your eye.

11. Blood-Related Conditions

Problems that affect your blood can make a small eye vessel break more easily. These issues often change how fast your blood clots or how strong your vessels are. When your blood does not clot well, even mild strain can cause bleeding under the eye surface and show up as a bright red patch.

Low platelet levels also matter since platelets help stop bleeding. If you have too few, tiny vessels in your eye can leak after coughing, bending, or rubbing your eye. Some clotting problems work in the opposite way by making your blood clot too much, which stresses vessel walls and weakens small vessels over time.

Certain blood conditions change how thick your blood is. A high red blood cell count can slow blood flow and raise pressure in small vessels, which causes a vessel in your eye to break without warning. Blood cancers can also play a role by affecting platelet levels and vessel health. You may notice eye bleeding along with other signs like easy bruising.

12. Eye Irritation

Eye irritation can raise pressure on the tiny blood vessels on the surface of your eye. When these vessels swell or break, you may see a bright red patch. This change often looks sudden, even if the cause built up over time.

Many everyday triggers irritate your eyes, such as dry air, smoke, dust, and strong fumes. Allergies can also inflame the thin layer that covers the white part of your eye, which holds many small blood vessels.

Common sources of irritation include dry eyes from screens, wind, or low humidity. Other sources include allergens such as pollen, pet hair, or mold. Air pollution, smoke, chemical vapors, contact lens wear that causes dryness, and small particles like an eyelash or grit also irritate the eye.

When your eyes feel itchy or gritty, you may rub them without thinking. Rubbing increases pressure inside the eye for a short time and can cause a fragile vessel to burst, leading to a bloodshot area.

13. Direct Eye Trauma

Direct eye trauma often causes a burst blood vessel in your eye. A hit to the eye can break tiny surface blood vessels, which leads to a red patch on the white part. You can get this kind of injury from a ball, a fall, or a finger poke. Car accidents and sports contact also raise the risk. Even a light hit can cause bleeding because eye tissues are delicate.

The blood collects under a clear layer that covers the white of your eye, trapping it in one spot and making the red area easy to see. It usually does not hurt and does not change your vision, with the size ranging from a small dot to a large patch.

Other signs can appear if the hit was stronger, such as swelling, soreness, or trouble opening your eye. In some cases, you may also see tearing or feel pressure. The blood fades as your body absorbs it, and the color can change from red to brown or yellow over time. This process often takes one to two weeks.

14. Concussion or Head Trauma

Concussions or other head injuries can cause a burst blood vessel in your eye. A sudden hit makes your head and eyes move quickly, even if you do not hit the eye directly. Falls, sports contact, car crashes, or being hit by an object can all trigger this injury. Each injury adds stress to delicate blood vessels and brain tissue, which can raise the risk of longer healing times.

The rapid movement of your head and eyes raises pressure inside small eye vessels. When one breaks, blood spreads over the white part of your eye, which creates a bright red patch that looks worse than it feels.

You do not need to lose consciousness for this to happen. You might feel a headache, dizziness, trouble focusing, or nausea. These signs can show up right away or later the same day. Wearing protective gear, playing safely, and using seat belts reduce your risk of head trauma and lower the chance of eye bleeding linked to sudden impact.