Blood in the Eye: What is it? Symptoms, Subconjunctival Hemorrhage, Causes and Treatment

The white part of the eye, known as the sclera, is covered by a thin, transparent tissue called conjunctiva.

Bleeding inside the eye can cause a small spot of redness or a large area of ​​red blood. If you have ever experienced a hemorrhage in one or both eyes, you know that the condition can often be alarming.


The hemorrhage appears as a patch of bright red blood in the white part of your eye. While it can be frightening to wake up to what appears to be a bleeding eye, a bleeding eye is usually harmless, with blood visible as a result of a simple broken blood vessel.

The conjunctiva covers the inside of your eyelid, which houses a network of small, thin blood vessels.

These small blood vessels are quite fragile and can explode or break easily, when they break, the blood is filtered and installed between the conjunctiva and the sclera, if the leak is small, a part of your eye may seem a little red.

It is not a reason to worry too much, but when combined with eye pain, abnormal drainage or vision problems, this may indicate a serious medical problem.

However, if the leak is large enough, the entire white part of your eye may appear completely red like blood and, in some cases, may bulge outward.

You may have bleeding in your eye if you see a bright red pool of blood inside your eye, the condition usually does not cause pain or changes in vision, but occasionally causes mild itching in the eye, sometimes you may feel an itching sensation when you blink.

Subconjunctival hemorrhage

A subconjunctival hemorrhage is another term for bleeding from the eye.

The conjunctiva contains many blood vessels and capillaries. These vessels may rupture and cause blood to leak into the area between the conjunctiva and the target of the eye.

When this happens, a small amount of blood accumulates under the conjunctiva. This small accumulation of blood is called subconjunctival hemorrhage. Minor bleeding under the outer membrane of the eye causes bright red spots to appear on the white of the eye.

Subjunctival hemorrhages usually occur due to minor injury or trauma to the eye. Even rubbing the eye too hard can cause a hemorrhage.

The most common causes of subconjunctival hemorrhages are coughing, sneezing and straining. People who have diabetes, high blood pressure, or who take certain medications may also have subconjunctival hemorrhages.

Subjunctival hemorrhages occur on the surface of the eye. As they do not affect the cornea or the inside of the eye, the vision is not affected.

In general, they are not painful and do not cause sensations, or real symptoms other than red spots. Although red or blood in the eye may appear serious, most subconjunctival hemorrhages are usually harmless and go away on their own in a few days.

Generally, no treatment is necessary, but if irritated, a doctor may recommend artificial tears.


Blood in the eye or ocular hemorrhage can be caused by the following:

  • Trauma.
  • Strong cough
  • Strong sneezing
  • He retched.
  • Heavy lifting
  • Rubbing the eye with force.
  • Constipation.
  • Various eye infections.

Occasionally, blood in the eye can also be a warning sign for diabetes, hypertension, bleeding or blood disorders, leukemia, and sickle cell disease.

It is important that your optometrist or ophthalmologist examine the bleeding to identify a cause and rule out other possible health disorders.


Blood in the eyes is sometimes caused by an injury. Hurting your eye could be as simple as hitting yourself with a mascara wand or accidentally wiping your eye with a sharp nail.

When the eye is damaged, the blood vessels within the eye enlarge and dilate so that blood and cells heal and repair the lesion. A red eye resting from an injury is also a warning sign to let you know that something is wrong with your eye.

Visit your doctor to make sure you have not harmed your eye.

Treatments for Blood in the Eye

Try to stay calm if you suddenly notice blood inside your eye. The blood visible in your eye due to a subconjunctival hemorrhage will be slowly reabsorbed by your body. Most cases resolve within approximately seven days without treatment.

However, a large subconjunctival hemorrhage may take up to two or three weeks to disappear. The redness may turn orange, then pink and then white again. Your eye will not be stained by blood. Artificial tears can be applied to diminish any scratching sensation.

The treatment of blood in the eye will vary from patient to patient, depending on the cause of the redness, sometimes, the blood will disappear on its own, but it is best to make an appointment with your eye doctor to rule out any infection.

If you can not go in to see your eye doctor immediately, you can place a cold compress over your eyes or apply eye drops without a prescription. Do not delay in contacting your doctor. Delaying treatment may require a more serious intervention, such as antibiotics or even surgery.

Seek Medical Care

An eye injected with blood may appear with only a few visible red blood vessels or may be completely red. There are many reasons why your eye may appear injected in blood, but in most cases, it is red for some reason.

It is best not to miss an eye injected with blood; His eye and body try to tell him something important. If you develop eyes injected with blood, it is a good idea for your eye doctor to determine the cause, even if it is harmless, as in many cases.

What you should know about Blood in the Eye

If you are worried about bleeding in your eye, schedule an eye exam. Your optometrist will complete a careful medical history to rule out possible causes of the hemorrhage. Your eyes will be examined to make sure that the eye is intact and that no other injuries have occurred in other eye structures.

The pressure of your eye will be measured and your eyes dilated so that the doctor can look inside and make sure there is no trauma or bleeding inside the eye. Although the appearance of blood in the eye can be annoying, it is usually not a cause for alarm, especially if there is no pain or visual changes.

Many people come to their doctor’s office with a subconjunctival hemorrhage without memory of trauma, circumstance or systemic medical problem. In many cases, broken blood vessels are caused by a blow to the eye with one hand in the middle of the night during sleep.

However, experiencing a subconjunctival hemorrhage more than twice a year may be cause for concern. It is then suggested that you have your general practitioner perform a complete physical examination.