Having a red eye

Why is there Blood in my Eye

Max. D Gray
By Max. D Gray. Updated: January 16, 2017
Why is there Blood in my Eye

Have you ever looked in the mirror and noticed you have a small red spot on your eyeball? Although at first glance this might seem somewhat disturbing, it is in fact a very common condition that usually goes away without treatment. There can be many reasons why these spots appear, the most common of which will be discussed in this OneHowTo article. Read on and discover why you have blood in your eye.

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Steps to follow:


Blood appears in the eye as a result of a leak beneath the conjunctiva. This occurs when a blood vessel bursts and blood leaks into the eye. This is normally painless and the only symptom is usually blood on the eyeball. There are different reasons behind this, the most common of which are listed below.

Why is there Blood in my Eye - Step 1

One of the common causes that explain why there's blood in your eye is stress. Alteration of the nervous system can cause a blood vessel to burst and leave an unsightly red mark on the eye. Similarly, it can be caused by any physical effort such as a sneeze, repetitive vomiting etc.

Why is there Blood in my Eye - Step 2

Injuries can also cause blood in the eye. In the same way that a purple bruise forms if you knock your leg or arm, a mark forms on the eye when it is injured. Bruises are an accumulation of blood due to a broken a blood vessel. It is the same thing that happens in the eye, although it is more visible as the tissue is transparent. A bruise forms.

If you've suffered some trauma, we at OneHowTo advise you to visit a doctor to check the condition of your eye and make sure there is not another, more serious injury.


Suffering from arterial hypertension can cause blood to clot, causing these spots of blood to appear on the eyeball. There are also some medications that can affect blood pressure and cause blood vessels to break.

Why is there Blood in my Eye - Step 4

Blood in the eyes may also appear due to rheumatic diseases or others that alter blood clotting, such as diabetes. Therefore, the blood spots may be a symptom of a major disease and must be addressed as soon as possible.


In the majority of cases, however, blood spots on the eye are normally harmless and should not be a cause for concern. However, if you cannot think of what may have caused this, we recommend having a medical examination to rule out any serious diseases.

Usually no treatment is needed and the spot disappears by itself after about seven days. The blood will gradually become less and less clear, disappearing without causing any pain or discomfort.

Why is there Blood in my Eye - Step 6

This article is merely informative, oneHOWTO does not have the authority to prescribe any medical treatments or create a diagnosis. We invite you to visit your doctor if you have any type of condition or pain.

If you want to read similar articles to Why is there Blood in my Eye, we recommend you visit our Diseases & secondary effects category.

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1 comment
jeanne williams
the second time in 5 months my eye has a lot of blood in it The first time I did go to dr and said it was broken vessel I am now very concerned about it I have had high blood pressure for a while What do you suggest
OneHowTo Editor
Hi Jeanne
A risk factor of subconjunctival hemorrhages is high blood pressure, therefore, if after 2-3 weeks your eye does not heal, we recommend consulting a professional again.
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Why is there Blood in my Eye