In orbital diseases, it is very important to have a comprehensive knowledge of orbit in various orbital disorders, which are as follows: Blow out orbital fracture Orbital disorders Orbital cellulitis Orbital abscess Squint DCR and orbital surgeries Let us go briefly in the anatomy of orbit . Orbit has 4 parts: Roof of orbit is bounded in front by orbital plate of frontal bone, bounded behind by lesser wing of sphenoid separating it from the anterior cranial fossa Floor of orbit is the roof of maxillary antrum formed by an orbital plate of maxilla   Medial wall is formed by the frontal process of maxilla crust of lacrimal bone orbital plate of ethmoid separating it from ethmoid air sinus bounded behind by a tiny piece of the bone orbital process of palatne Lateral wall is bounded by zygomatic and greater wing of sphenoid separating it from temporal fossa Share your opinion.