<P> Based on this anatomy , the optic nerve may be divided in the four parts as indicated in the image at the top of this section ( this view is from above as if you were looking into the orbit after the top of the skull had been removed ) : 1 . the optic head ( which is where it begins in the eyeball ( globe ) with fibers from the retina ; 2 . orbital part ( which is the part within the orbit ) . 3 . intracanicular part ( which is the part within a bony canal known as the optic canal ) ; and , 4 . cranial part ( the part within the cranial cavity , which ends at the optic chiasm ) . </P>
<P> Based on this anatomy , the optic nerve may be divided in the four parts as indicated in the image at the top of this section ( this view is from above as if you were looking into the orbit after the top of the skull had been removed ) : 1 . the optic head ( which is where it begins in the eyeball ( globe ) with fibers from the retina ; 2 . orbital part ( which is the part within the orbit ) . 3 . intracanicular part ( which is the part within a bony canal known as the optic canal ) ; and , 4 . cranial part ( the part within the cranial cavity , which ends at the optic chiasm ) . </P>
where does the optic nerve attached to the eye
where does the optic nerve attached to the eye
the optic head
the optic head