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目的 为泪道阻塞的介入治疗提供解剖学资料。方法 利用３２侧头颅标本，观察泪道的行程特点，测量泪囊和鼻泪管的长度、内径及内侧壁的厚度等。结果 上、下泪小管合成总管（９４％ ）或各自单独（６％ ）开口于泪囊外侧壁，泪囊位于泪囊窝内，由内上向外下倾斜，在进入骨性鼻泪管处形成稍向内向后的转折。鼻泪管的下端开口于下鼻道外侧壁，呈裂隙状（７５％ ）或卵圆形（２５％ ）。泪囊与鼻泪管之间的连续较狭窄，位于骨性鼻泪管的上方。从泪囊至鼻泪管，各部内腔大小不等，泪囊为（５．６５±０．６２） ｍ ｍ ，连接部为（３．５６±０．４７） ｍ ｍ ，鼻泪管中段为（４．７９±１．１３） ｍ ｍ ，各部的内侧壁的厚度由上向下逐渐增大，泪囊为（０．７０±０．１８） ｍ ｍ ，连接部为（１．１０±０．２５） ｍ ｍ ，鼻泪管中段为（１．６２±０．４０） ｍ ｍ 。左右两侧泪道各部测量值的两两比较无显著性差异（Ｐ＞ ０．０５）。结论 泪道正常解剖的了解有助于泪道阻塞时介入治疗的顺利进行和减少并发症。
Objective To provide anatomic data for the interventional treatment of lacrimal duct obstruction. Methods 32 skull specimens were used to observe the laryngeal stroke characteristics, the length of the lacrimal sac and nasolacrimal duct, the diameter and the thickness of the medial wall. Results, the lower lacrimal duct into the Explorer (94%) or each separately (6%) opening in the lateral wall of the lacrimal sac, lacrimal sac in the lacrimal fossa nest, tilted from the inside to the bottom, into the bony nasolacrimal duct Form a turning point inwards and outwards. The lower end of the nasolacrimal duct is open to the lateral wall of the inferior nasal canal with a slit (75%) or oval (25%). Lacunar and nasolacrimal duct between the more narrow, located above the bony nasolacrimal duct. From the dacryocystis to the nasolacrimal duct, the sizes of the lumens in each department ranged from (5.65 ± 0.62) m m to (3.56 ± 0.47) m m in the lacrimal sac and (4.79 ± 1.13) m m, and the thickness of the medial wall of each part increased gradually from top to bottom. The length of the lacrimal sac was (0.70 ± 0.18) m m and the connecting part was (1.10 ± 0 .25) m m, the middle segment of nasolacrimal duct was (1.62 ± 0.40) m m. There were no significant differences in the measured values of the lacrimal passages between the left and right sides (P> 0.05). Conclusion The understanding of the normal anatomy of lacrimal duct contributes to the smooth progress of interventional treatment and the reduction of complications when lacrimal duct obstruction.