眼眶深部异物(指异物位于眼球以后者)多由爆炸伤引起。由于眶尖部范围狭小,致伤异物常涉及邻近眶外组织,尤其是骨质菲薄的筛窦与更深部的蝶窦等,因而有时会造成较复杂的眶内外相沟通的伤道。眼球后方眶区范围虽小,但包括有视神经及眶区的神经、血管主干等重要组织。眼眶深部异物因伤情不同,如异物的大小、停留的部位、与邻近组织的关系,以及受伤后就诊时间早晚,对诊断与治疗也常发生很大影响。例如,通常采用的以角膜缘作标记的X线摄片,可由于眶内血肿、组织肿胀、眼位不正等原因,混淆正常的解剖结构,从而影响我们对致伤异物的位置与邻近组织关系的判断。对异物是 Deep orbital foreign body (referring to the foreign body located behind the eye) caused by more explosive injuries. Due to the narrow orbital apex, foreign body involvement often involves the adjacent orbital tissue, especially the thin ethmoid sinus and deeper sphenoid sinus, sometimes resulting in more complicated orbital and external injuries. The posterior orbital area behind the eye is small, but includes the optic nerve and orbital area of ​​the nerves, blood vessels and other important trunk. Deep orbital foreign body due to different injuries, such as the size of foreign body, the site of stay, the relationship with neighboring organizations, as well as the time of treatment after injury, sooner or later, diagnosis and treatment also often have a great impact. For example, the commonly used limbal-labeled radiographs can confuse the normal anatomy due to orbital hematoma, swelling of the tissue and incorrect eye position, thus affecting the relationship between the location of the injured foreign body and the adjacent tissue Judgment. The foreign body is