目的　为经鼻内镜进行眶内手术提供解剖学依据。　方法　根据文献报道的手术方法，对筛骨纸板切除的范围和厚度、眶筋膜和眶脂肪的厚度进行测量。　结果　在眶纸板上可以矩形切除的范围前后长：（22.15±6.06）mm(20.16～14.68 mm);宽度为：(13.45±2.08)mm(12.66～14.44 mm)。筛骨纸板骨壁的厚度为（0.38±0.06）mm(0.30～0.46 mm),眶筋膜的厚度为(0.32±0.02)mm(0.30～0.38 mm),眶脂肪（福尔马林已经固定）厚度为(1.40±0.34)mm(1.18～1.76 mm)。　结论　经鼻内镜进行眶内手术具有可行性,本文的研究结果对临床手术的开展具有指导意义。

Objective　To provide anatomic basis for the nasal endoscopic orbital interior operative approach. 　Methods　According to the reported approach, the range and thickness of lamina erbitalis excised during the process, and the thickness of fasciae and fossae ischiorectalisadipose body of orbit were measured. Results　Excisional range of lamina erbitalis was about 22.15±6.06 mm(20.16～14.68 mm) in length, and 13.45±2.08 mm(12.66～14.44 mm) in height. The thickness of orbital paper plate was 0.38±0.06 mm(0.30～0.46mm), the thickness of the fasciae of orbit was(0.32±0.02 mm(0.30～0.38 mm), and that of fossae ischiorectalisadipose body of orbit （fixed specimens) was about 1.40±0.34 mm(1.18～1.76 mm).   Conclusions  It is feasible to perform orbital interior operation under the guiding of nasal endoscope, and our result provide anatomic basis for clinical application of nasal endoscope.