Subconjunctival Hemorrhage

A subconjunctival hemorrhage occurs when a blood vessel breaks underneath one's conjunctiva (a transparent membrane which borders one's eyeball and eyelids). When the blood vessel breaks it leaks around the conjunctiva, leaving a dark blood spot which is effectively an eye bruise. A subconjunctival hemorrhage is painless and requires no medical attention; most cases will resolve themselves within 2 weeks.