Internal carotid artery C6 segment

The ophthalmic segment, or C6, extends from the distal dural ring, which is continuous with the falx cerebri, to the origin of the posterior communicating artery. The ophthalmic segment courses roughly horizontally, parallel to the optic nerve which runs superomedially to the carotid at this point.

The named branches of the ophthalmic segment are:

the ophthalmic artery

the superior hypophyseal artery