to Prevent Blindness during Orbital Wall Fracture Surgery

pression of the optic nerve has also been recommend ed, but it should be performed within 24 hours and its effectiveness is not clear [3]. Papillary mydriasis occurring during the treatment of blow out fracture might indicate irreversible blindness, because it means that the ciliary ganglion or short ciliary nerves are injured [4]. The ciliary ganglion is located posterolateral to the globe, between the optic nerve and lateral rectus muscle, 1 cm anterior to the superior orbital fissure, and 2.9 mm removed from the optic nerve [5]. Near the optic nerve, the ciliary nerves run inferomedially toward the sphincter papillae muscle and with the ciliary artery above and the optic nerve beneath (Fig. 1). The short ciliary nerves and ciliary ganglion are close to the optic nerve, an