Orbit roof of the orbit is bounded by an orbital palate of the frontal bone in front and lesser wing of sphenoid from behind, separating it from anterior cranial fossa floor of orbit which is formed by an orbital palate of maxilla seating. It from maxillary antrum infarct floor of the orbit is the roof of maxillary antrum medial wall bones taking part are a frontal process of maxilla crust of lacrimal bone orbital palate of ethmoid separating it from ethmoid air sinus body of sphenoid bounded behind by tiny piece of bone, which lies at the apex of the orbit.

Orbital process of palatine bone lateral wall bounded by zygomatic and greater wing of sphenoid separating it from temporal fossa.