Subconjunctival Hemorrhage

subconjunctival hemorrhage also known as hyposphagma, is bleeding underneath the conjunctiva.  The conjunctiva contains many small, fragile blood vessels that are easily ruptured or broken.  When this happens, blood leaks 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.

Image copyright Mayo Clinic medical information and Research (link)

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