Medial wall of the orbit is formed by all of the following except
The medial wall of the orbit is the thinnest is formed by 4 bones; from before backwards, these are frontal process of maxilla, lacrimal process of maxilla, orbital plate of ethmoid, and body of sphenoid.Reference: Textbook of anatomy, Head Neck, and Brain, Vishram Singh, 2nd edition, page no.282