Mostly sunny. Patchy fog in the outer west early this morning. Slight (20%) chance of rain in the outer west later tonight. Near zero chance of rain elsewhere. Winds north to northwesterly 15 to 25 km/h becoming northerly 25 to 35 km/h in the morning.
Ophthalmic artery (OA) is the first intracranial branch of internal carotid artery (ICA). It arises soon after ICA emerges from cavernous sinus, follows a short intracranial course, transverses the optic canal, and enters the orbit.
Orbital tumors may traverse the optic canal. and affect the intracranial segment of the optic nerve or. adjacent structures. Similarly, principally intracanalicular. lesions (Fig 3) may expand proximally to the intracranial. nerve or distally to the orbital segment.