Papageorgiou K I, Mathew R G, Ghazi-Nouri S M S, Andreou P S, Sinha A J
Ophthalmology Department, Broomfield Hospital, Chelmsford, Essex, UK.
Orbit. 2007 Mar;26(1):71-4. doi: 10.1080/01676830600675350.
Optic nerve avulsion is an extremely rare occurrence and usually arises in the setting of severe fronto-orbital fractures or penetrating orbital injuries. However, a few cases have been associated with minor injury.
To overview the pathophysiology of delayed optochiasmal avulsion following minor ocipital trauma and discuss management options.
Report of a unique case of a 79-year-old woman who presented with delayed partial expulsion of the right globe and complete optic nerve avulsion following closed head injury to the occiput.
Antero-posterior distortion of the skull following such a deceleration injury can cause laceration and thrombosis of the pre-chiasmal and pial arteries supplying the optic chiasm. The ensuing ischaemic changes subsequently caused delayed softening of the chiasm and its avulsion. The concomitant retrobulbar haemorrhage and mass effect within the orbit consequently led to the partial expulsion of the globe.
视神经撕脱极为罕见，通常发生于严重的额眶骨折或眼眶穿透伤的情况下。然而，有少数病例与轻伤有关。
概述轻微枕部创伤后迟发性视交叉撕脱的病理生理学并讨论治疗方案。
报告一例独特病例，一名79岁女性，在枕部闭合性头部损伤后出现右眼迟发性部分眼球脱出和完全性视神经撕脱。
这种减速伤后颅骨的前后扭曲可导致供应视交叉的视交叉前和软脑膜动脉撕裂和血栓形成。随后发生的缺血性改变继而导致视交叉延迟软化及其撕脱。眼眶内伴随的球后出血和占位效应因此导致眼球部分脱出。
