Orbit has 4 walls superior wall inferior wall lateral wall the medial wall here we are focusing on the medial wall of orbit the bones taking part in the medial wall of orbit are frontal process of the maxilla crust of lacrimal bone orbital plate of ethmoid separating it from ethmoid air sinus body of the sphenoid bounded behind by tiny piece of bone lying at the apex of orbit orbital plate of palatine bone The importance of medial wall of orbit from the ophthalmic point of view is in lacrimal sac surgery: DCR and blowout orbital fracture occurs 1 to 3 mm medial to post part of the inferior orbital groove as medial part of the orbit, is the weakest part of lacrimal sac surgery. W e have to define medial palpebral ligament which is attached to ant lacrimal crust.
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