Optic canal positioning device.
D006801:Humans; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging; D009900:Optic Nerve / Q000000981:diagnostic imaging; D010969:Plastics; D011859:Radiography; D013100:Sphenoid Bone / Q000000981:diagnostic imaging*; D013679:Technology, Radiologic
D010969:Plastics