Optic canal is a pa of ?

Ans. is 'a' i.e., Lesser wing of sphenoid The optic nerve leaves the orbit is the optic canal to enter the cranial vault. The optic canal is the most posterior landmark of the orbit. It measures 10 mm in length. The thin piece of bone separating the optic canal from the superior orbital fissure is the optic strut. The optic strut and optic canal are a pa of the lesser wing of sphenoid bone.