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What Is Eye Bleeding (Subconjunctival Hemorrhage)?

Eye bleeding from a subconjunctival hemorrhage is a bright red or dark patch on the white part of the eye. It happens when a tiny blood vessel breaks under the clear surface layer called the conjunctiva. The blood spreads out over the sclera and looks dramatic, but vision usually stays normal. People often notice it suddenly in a mirror without any pain. In many cases it is harmless and clears on its own over one to two weeks.

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What Is Eye Bleeding (Subconjunctival Hemorrhage)?

Eye bleeding from a subconjunctival hemorrhage is a bright red or dark patch on the white part of the eye. It happens when a tiny blood vessel breaks under the clear surface layer called the conjunctiva. The blood spreads out over the sclera and looks dramatic, but vision usually stays normal. People often notice it suddenly in a mirror without any pain. In many cases it is harmless and clears on its own over one to two weeks.

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What Causes Eye Bleeding (Subconjunctival Hemorrhage)?

A subconjunctival hemorrhage usually results from a small blood vessel that bursts under the conjunctiva. Coughing, sneezing, heavy lifting, or straining can raise pressure in the veins and trigger a break. Minor eye trauma, rubbing the eye, or contact lens use can also play a part. Some people have fragile vessels from age, high blood pressure, diabetes, or blood thinning medicines. In rare cases, bleeding disorders or significant injury cause recurrent or extensive patches.

What Does a Subconjunctival Hemorrhage Look and Feel Like?

This type of eye bleeding has a distinct appearance. The white of the eye shows a sharply outlined red or dark area that can spread over a large section. The patch can change color as it heals, similar to a skin bruise. Most people have no pain, discharge, or change in vision, although there can be a mild scratchy feeling. The pupil and colored part of the eye look normal, and there is no blood inside the clear front chamber.

How Is a Subconjunctival Hemorrhage Evaluated?

Doctors usually diagnose a subconjunctival hemorrhage by examining the eye with a light. They confirm that the redness is flat, under the conjunctiva, and not due to infection or deeper bleeding. Blood pressure measurement and questions about medicines and medical history help uncover possible contributors. In people with repeated episodes or signs of bruising elsewhere, blood tests may be ordered. If trauma was involved, a full eye exam checks for hidden injury.

How Is Eye Bleeding From a Subconjunctival Hemorrhage Treated?

Most subconjunctival hemorrhages need no specific treatment and clear on their own over days to weeks. Lubricating drops can ease mild irritation if present. Doctors focus on addressing underlying factors such as uncontrolled blood pressure or blood thinning medicine levels. You should avoid rubbing the eye while it heals. If there is pain, vision change, blood inside the front of the eye, or a history of major trauma, urgent evaluation is important to rule out more serious problems.

Frequently Asked Questions About Subconjunctival Hemorrhage

Is a subconjunctival hemorrhage dangerous for my vision?

In most cases it is not dangerous and does not affect vision. It is mainly a cosmetic issue that looks alarming but usually heals without lasting effects.

How long does it take for the red spot on my eye to go away?

The blood often starts to fade within a few days and can take up to two weeks or more to clear fully. The color can shift from bright red to brownish or yellow as it resolves.

Should I see a doctor for a subconjunctival hemorrhage?

It is a good idea to have at least one episode checked, especially if you have high blood pressure, are on blood thinners, or are unsure of the cause. You should seek care urgently if there is pain, vision change, or recent eye injury.

Can I prevent subconjunctival hemorrhages from happening again?

Managing blood pressure, using blood thinning medicines as directed, and avoiding eye rubbing can lower the chance of repeat episodes. Your doctor can look for underlying problems if hemorrhages occur often.