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目的 :报告 2 0例经颅视神经减压开放术治疗外伤后迟发失明。方法 :经冠状切口额部开颅硬膜下入路 ,视神经管上壁骨性减压 ,并剪开视神经鞘膜。评价手术后视力恢复的标准为 :失明、眼前手动、眼前数指、光感、能见视力表符号 5个级别。术后视力提高 1个级别以上者为有效 ,否则为无效。结果 :2 0例患者共 9例术后恢复了视力 ,有效率为 45 %。结论 :迟发性失明的患者应行急诊手术治疗 ,术后视力恢复与损伤后至手术时间、手术方法相关 ,也与视神经损伤程度密切相关
Objective: To report the delayed blindness of trabeculectomy for 20 cases of transcranial optic nerve decompression and open surgery. Methods: The head of the coronal incision craniotomy subdural approach, the optic canal upper bony decompression, and cut the optic nerve sheath. Evaluation criteria for visual acuity after surgery: blindness, immediate hand, the number of fingers in front, light sense, can see the visual acuity symbol 5 levels. Postoperative visual acuity increased by more than one level is valid, otherwise invalid. Results: Nine patients in 20 patients recovered their eyesight after operation, the effective rate was 45%. Conclusion: Patients with delayed blindness should be treated with emergency surgery. Postoperative visual acuity recovery is related to postoperative injury time to operation time and operation method, and is also closely related to the degree of optic nerve injury