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Subconjunctival hemorrhage

Definition:

Subconjunctival hemorrhage is a bright red patch appearing in the white of the eye. This condition is also called red eye.

Alternative Names:

Red eye

Causes, incidence, and risk factors:

A subconjunctival hemorrhage occurs when a small blood vessel breaks open and bleeds near the surface of the white of the eye (bulbar conjunctiva ). It may happen without injury, and is often first noticed when you wake up and look in a mirror.

Sudden increases in pressure such as violent sneezing or coughing can cause a subconjunctival hemorrhage. The hemorrhage may also occur in persons with high blood pressure or who take blood thinners.

A subconjunctival hemorrhage is common in newborn infants. In this case, the condition is thought to be caused by the pressure changes across the infant's body during childbirth.

References:

Behrman RE. Nelson Textbook of Pediatrics. 17th ed. Philadelphia, Pa: WB Saunders; 2004; 1045.

Yanoff M, Duker JS, Augsburger JJ, et al. Ophthalmology . 2nd ed. St. Louis, Mo: Mosby; 2004:404-411.

Eye

Review Date: 2/22/2007
Reviewed By: Manju Subramanian, MD, Assistant Professor in Ophthalmology, Vitreoretinal Disease and Surgery, Boston University Eye Associates, Boston, MA. Review provided by VeriMed Healthcare Network.

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