Medical wall of orbit formed by

Medial wall of the orbit is very thin. From before backward, it is formed by (a) The frontal process of the maxilla; (b) the lacrimal bone; (c) the orbital plate of the ethmoid; and (d) the body of the sphenoid bone. Features: (a) The lacrimal groove lies anteriorly on the medial wall. It is bounded anteriorly by the lacrimal crest of the frontal process of the maxilla, and posteriorly by the crest of the lacrimal bone. The floor of the groove is formed by the maxilla in front and by the lacrimal bone behind. The groove lodges the lacrimal sac which lies deep to the lacrimal fascia bridging the lacrimal groove. The groove leads inferiorly, through the nasolacrimal canal, to the inferior meatus of the nose. (b) The anterior and posterior ethmoidal foramina lie on the frontoethmoidal suture, at the junction of the roof and medial wall. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3, 4th edition.