Subconjunctival Hemorrhage: This condition is characterized by a sudden appearance of blood underneath the conjunctiva, the clear membrane covering the white part of the eye. It is often caused by a burst blood vessel due to increased pressure, such as from coughing, sneezing, or straining. The condition is usually benign and resolves on its own.

Conjunctivitis: Inflammation of the conjunctiva can lead to the rupture of small blood vessels, causing bleeding. This condition can be due to infection, allergy, or irritation.
Dry Eye Syndrome: Severe dryness can lead to inflammation and potentially cause blood vessels in the eye to burst.
Trauma: A direct injury to the eye can cause blood vessels to rupture, leading to bleeding.

Hypertension: Uncontrolled high blood pressure can lead to the rupture of blood vessels in the eye, which may be a sign of a more serious systemic condition.
Diabetic Retinopathy: Diabetes can cause damage to the blood vessels in the retina, potentially leading to bleeding. Early detection is crucial to prevent vision loss.
Carotid Artery Disease: Although rare, a burst blood vessel in the eye could be a sign of carotid artery disease, which increases the risk of stroke.

Amyloidosis: A condition where abnormal proteins (amyloid) accumulate in various parts of the body, including the eyes, potentially causing blood vessel rupture.
Sickle Cell Disease: This genetic disorder can affect the blood vessels and cause them to rupture, including those in the eyes.
Ehlers-Danlos Syndrome: A group of disorders that affect connective tissues, including blood vessels, which can lead to easy bruising and bleeding, including in the eyes.