The X-ray foramen is performed to see the opening of the optic canal or optic foramen. This is located at the base of the skull and carries the optic nerve and the ophthalmic artery into the orbital cavity. The indications for this test are fracture of bones surrounding the optic foramen, to look for any changes in the shape or size of the optic canal, to detect the presence of any optic neuropathies or any suspected infections or abnormal growth.