Transconjunctival approach to the infraorbital region: a cadaveric and clinical study.

The surgical anatomy of the transconjunctival approach to the infraorbital region was studied using fresh cadaver dissection, histological examination and in the clinical situation. The existence of a periorbital envelope which separates the orbital fat from the orbital septum, and a potential postseptal space was noted. Reference to these anatomical features could not be found in the literature. The postseptal space was used to gain access to the infraorbital rim and the orbital floor. Wire and plate osteosynthesis of the infraorbital rim and exploration and reconstruction of the orbital floor were performed without fat herniation into the operative field. Access was adequate for these procedures and lower lid malposition was not observed as a postoperative complication.