Abstract
Repair of the orbit after injury is difficult and there are risks such as retrobulbar haemorrhage, and damage to critical structures of the superior orbital fissure, nasolacrimal apparatus, and the optic nerve that can lead to permanent blindness. The maximum depth of the socket is between 3.5–4.5 cm 1 Stassen L.F. Kerawala C.J. Peri and intraorbital trauma and orbital reconstruction. in: Ward-Booth P. Schendel S.A. Hausamen J.E. Maxillofacial surgery. 2nd ed. Churchill Livingstone, Edinburgh2006: 205-222 Google Scholar from the margin of the inferior orbit to the optic foramen and can be difficult to assess intraoperatively after injury. Recently Evans and Webb 2 Evans B.T. Webb A.A. Post-traumatic orbital reconstruction: anatomical landmarks and the concept of the deep orbit. Br J Oral Maxillofac Surg. 2007; 45: 183-189 Abstract Full Text Full Text PDF PubMed Scopus (37) Google Scholar highlighted important and reliable orbital landmarks that permit safe dissection within the bony orbit. To maintain a safe distance from deep structures within the orbit we suggest using a marked Howarth periosteal elevator as a guide. The orbital depth is marked on the elevator with a marking pen as shown in Fig. 1 and used as a guide during the operation.
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