的研究中国成人视神经管显微解剖学特点。方法 20例无颅眶疾病、经福尔马林固定的国人尸头，在手术显微镜下测量视神经管颅口、眶口的宽度、高度及管顶、底、内侧壁、外侧壁长度，并观察筛、蝶窦气化情况。结果视神经管颅口宽(5.05±0.42) mm,高(4.61±0.27) mm，眶口宽(5.30±0.64) mm，高(5.62±0.83) mm；管顶长(9.67±1.51) mm，底长(5.41±0.84) mm，内侧壁长(9.58±0.72) mm, 外侧壁长(9.26±0.66) mm。结论成人视神经管壁薄，中部有狭窄，管壁依蝶窦、筛窦气化程度分为倒U型、C型及D型；颅口硬膜返折部长且边缘锐利。%Objective To investigate the anatomic characteristics of optic canal in chinese adults. Methods Twenty chinese cadaveric speciments fixed in formalin of chinese patients without intracranial and intraorbital disease. We measured the width and height of the intracranial opening and the intraorbital opening of the optic canal of all cases. The length of roof, floor, medial and lateral wall of the optic canal, and the width, the height of the middle protion were also measured after unroofing the canal with high-speed drilling. The degree of pneumatization of ethmoidal and sphenoidal sinuses was recorded. Results The intracranial opening of the optic canal was a horizontal oval shape. The width of it was (5.05±0.42) mm and the height was (4.61±0.27) mm. The length of optic roof, optic floor, medial wall and lateral wall of the optic canal was (9.67±1.51) mm, (5.41±0.84) mm, (9.58±0.72) mm and (9.26±0.66) mm, respectively. The intraorbital opening of the optic canal was a vertical oval shape, the height and width of it was (5.30±0.64) mm and (5.62±0.83) mm respectively. Conclusions The wall of the optic canal is thinner and there is a narrow portion in the middle of it. Depending on the degree of the pneumatization of sphenoidal and ethmoidal sinus, three types were divided into: 1. reversal U shape, 2. C shape, 3. D shape. The dura fold of the optic canal is long and its edge is sharp.
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