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Orbit Arterial Supply


The arterial supply to the orbit derives its origin from the internal carotid artery (ICA). In the head and the neck, the common carotid bifurcates at the C4-C5 region. This bifurcation leads to the external carotid artery and the ICA. The internal and external carotid arteries are important vessels because of their blood supply to the orbit, cranial base and dura lining the cranial fosse, and the cranial nerves. The important branches involved in irrigating the orbit include the following:

Facial artery and angular artery branch – Supplies orbit and medial lid

Occipital artery

Superficial temporal artery – Supplies frontal and superior orbit

Internal maxillary artery

Middle meningeal artery – Major vessel supplying the orbit in the absence of the ophthalmic vessel

Anterior deep temporal artery

Infraorbital artery


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