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与面中部骨折相关的失明发病串为0.3％～3.5％,是由于损伤眼球、视神经或视觉通路所致。大多数病例是损伤视神经管内的视神经造成的,这样的损伤可为直接或间接的。Walsh和Hoyte给间接视神经损伤的定义为:创伤性视力丧失,无外部或原发的对眼或视神经损伤的检眼镜证据。间接视神经损伤(缺血性神经病变)是视神经受球后出血或神经周围水肿压迫所致,或继发于血管痉挛或血栓形成。 作者回顾性分析了1995～1997年面中部骨折患者,单纯鼻骨骨折除外。所有视力丧失病例均由颌面外科、病理科和神经外科医生来评价。内容包括复习病例,X线平片和CT片以提供年龄、性别及损伤的原因,面部骨折的类型,眼球损伤的类型,失明的原因和用于
The incidence of blindness associated with midfacial fractures ranged from 0.3% to 3.5% due to damage to the eyeball, optic nerve or visual pathway. Most cases are caused by damage to the optic nerve within the optic canal and such damage can be direct or indirect. Walsh and Hoyte to indirect optic nerve injury is defined as: traumatic vision loss, no external or primary ophthalmological evidence of eye or optic nerve damage. Indirect optic nerve injury (ischemic neuropathy) is caused by oppression of the optic nerve after the bleeding or peripheral edema caused by oppression, or secondary to vasospasm or thrombosis. The authors retrospectively analyzed patients with midfacial fractures from 1995 to 1997, except for simple nasal bone fractures. All cases of vision loss were evaluated by maxillofacial surgery, pathology and neurosurgeons. This includes reviewing cases, radiographs, and CT slices to provide age, sex, and causes of injury, types of facial fractures, types of eye damage, causes of blindness,