Raccoon eyes ,a sign for basal skull fracture

Raccoon eyes is also known in the UK as panda eyes or periorbital ecchymosis that is a sign of basal skull fracture or a craniotomy that ruptured the meninges.And not due to facial soft-tissue trauma.
It is from bilateral subconjunctival hemorrhage, and occurs when damage at the time of fracture tears the meninges and causes the venous sinuses to bleed into the arachnoid villi and the cranial sinuses.It developes 2-3 days after a closed head injury that results in a basilar skull fracture.