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1 何谓视神经减压术 ,有何临床意义 ?答 :视神经分三段 ,即眶内段、视神经管段及视交叉颅内段。颅面闭合性外伤时视神经管段最易遭受损伤。视神经骨管内骨膜与神经鞘膜紧密融合一起 ,视神经在骨管内无移动余地 ,软脑膜血管丛是视神经主要供血来源 ,一旦骨管骨折或神经受损 ,便
1 What is optic nerve decompression, what is the clinical significance? A: The optic nerve is divided into three segments, namely the orbital segment, the optic canal segment and the optic chiasm intracranial segment. Craniofacial closed traumatic optic nerve segment most vulnerable to injury. With close fusion of the periosteum of the optic canal and the nerve sheath, the optic nerve has no room for movement in the bone canal. The pial plexus vascular plexus is the main source of blood supply to the optic nerve. Once the bone fracture or nerve is damaged,