Subconjunctival hemorrhage

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**Subconjunctival hemorrhage**
*Classification & external resources*
ICD-10	H 11.3
ICD-9	372.72

A subconjunctival hemorrhage is a common and relatively minor post-LASIK complication.

A subconjunctival hemorrhage (or subconjunctival haemorrhage) is bleeding underneath the conjunctiva. The conjunctiva contains many small, fragile blood vessels that are easily ruptured or broken. When this happens, blood is leaked into the space between the conjunctiva and sclera.

Whereas a bruise typically appears black or blue underneath the skin, a subconjunctival hemorrhage initially appears bright red underneath the transparent conjunctiva. Later the hemorrhage may spread and become green or yellow, like a bruise. Usually this disappears within 2 weeks. [1]

Although its appearance may be alarming, a subconjunctival hemorrhage is generally a painless and harmless condition; however, it may be associated with high blood pressure, or trauma to the eye.

[edit] Causes

Minor eye trauma
Spontaneously with increased venous pressure

Streneuous Exercising
Coughing
Touching/widening eyes
Sneezing
Vomiting, particularly forced vomiting as seen in bulimia nervosa
Straining
Severe alcohol intoxication, leading to raised blood pressure

Blood dyscrasia (rare)
Severe hypertension
LASIK
Blood thinners, such as ginger, capsaicin, ginseng, garlic, aspirin, or Herba if taken in high doses or combined. These can also make the vessels in the eye more susceptible to the pressure causes listed above.

Subconjunctival hemorrhages in infants may be associated with scurvy (a vitamin C deficiency)[2],[3], abuse or traumatic asphyxia syndrome [4].

[edit] Treatment and management

A subconjunctival hemorrhage is typically a self-limiting condition that requires no treatment in the absence of infection or significant trauma. The elective use of aspirin and NSAIDs is typically discouraged.

A common symptom of a subconjunctival hemorrhage, itchy eyes, is often treated by appling eye drops or artificial tears to the affected eye(s).