原发性获得性鼻泪管阻塞(primary acquired nasolacrimal duct obstruction，PANDO)是泪道阻塞性疾病中最常见的一类，好发于中老年女性，是眼科临床上的常见病、多发病，常继发急性或慢性泪囊炎的症状和体征，严重影响患者的日常工作和生活。本文对近年来PANDO可能的发病机制相关的研究进展、亟待解决的问题及未来研究的热点方向作一综述，旨在进一步加深对泪道阻塞性疾病发生发展的认识。

Primary acquired nasolacrimal duct obstruction (PANDO), which mainly occurs in the middle-aged and elderly women, is the most common type of obstructive diseases of the lacrimal duct, and it is also a common and frequently-occurring disease in ophthalmology. It constantly occurs secondary to various symptoms and signs of acute or chronic dacryocystitis, which seriously affects the daily work and life of patients. This article summarizes the research progress on the possible pathogenesis of PANDO in recent years, the urgent problems to be solved

and the hot research directions in the future, aiming to further deepen the understanding of the occurrence and development of lacrimal obstructive diseases.

目的：通过在血管灌注尸头标本上模拟经鼻内镜下鼻泪管-泪囊切除术探讨该术式的基本操作以及在经鼻内镜下鼻泪管-泪囊和其周围结构的解剖关系，以期为临床开展该术式提供解剖学依据。方法：采用5个动、静脉双灌注成人尸头标本(共10侧)进行解剖学研究。在标本上进行经鼻内镜下暴露全程鼻泪管及泪囊，观察鼻泪管-泪囊切除过程的解剖标志和毗邻关系。结果：10侧泪囊-鼻泪管的解剖显示全部泪囊均位于鼻丘的前方稍外侧，泪囊顶基本和鼻丘顶平齐，泪囊体大部分位于中鼻甲腋窝水平线上方。泪囊窝后内壁由泪骨构成，泪骨后内方与鼻丘气房相邻。泪囊底向下移行为膜性鼻泪管进入骨性鼻泪管，鼻泪管在鼻腔外侧壁的投影位于钩突垂直部前缘前方约3~7mm。鼻泪管下鼻道开口距离下鼻甲前端的距离为(16±3)mm。泪囊长度为(13.8±1.8)mm，鼻泪管长度为(23.2±3.6)mm。结论：经鼻内镜入路可充分暴露和切除全程鼻泪管和泪囊。本解剖研究展示的基本操作过程和解剖标志可为临床开展经鼻内镜鼻泪管-泪囊切除术提供解剖学参考。

Objective: By simulating transnasal endoscopic resection of nasolacrimal duct and lacrimal sac on cadaveric specimens with vascular perfusion, the basic process of this procedure and the anatomical relationship between nasolacrimal duct and lacrimal sac were explored, providing anatomical basis for clinical application. Methods: Five adult cadaver head specimens (10 sides in total) were used for anatomical study. The nasolacrimal duct and lacrimal sac were exposed under transnasal endoscopy, and the anatomical landmarks and their relationship with adjacent areas during the resection of nasolacrimal duct and lacrimal sac were observed. Results: Ten sides of nasolacrimal duct and lacrimal sac showed that all lacrimal sacs were located anterior and slightly lateral to the nasal mound. The roof of lacrimal sac was almost the same height as the roof of nasal mound. The body of lacrimal sac was almost located above the horizontal line of the middle turbinate axilla. The posterior inner wall of the lacrimal fossa was composed of lacrimal bone. The posterior inner side of the lacrimal bone was adjacent to the agger nasi cell. The bottom of the lacrimal sac moved downward as the membranous part of the nasolacrimal duct located in the bony part of the nasolacrimal duct. The projection of the nasolacrimal duct on the lateral nasal wall was located about 3–7 mm in front of the anterior edge of the vertical part of the uncinate process. The distance between the inferior meatus opening of the nasolacrimal duct and the anterior end of the inferior turbinate was (16±3) mm. The length of the lacrimal sac was (13.8±1.8) mm, and the length of the nasolacrimal duct was (23.2±3.6) mm. Conclusion: The transnasal endoscopic approach can fully expose and resect the nasolacrimal duct and lacrimal sac. The basic operation process and anatomical landmarks demonstrated in this anatomical study provide an anatomical reference for the clinical development of transnasal endoscopic resection of nasolacrimal duct and lacrimal sac.

目的：探讨先天性鼻泪管阻塞的临床治疗效果。方法：选取在咸阳彩虹医院接受治疗并有随诊记录的先天性鼻泪管阻塞患儿共630例(827眼)。根据年龄大小，采用4种方式统计治疗效果。结果：年龄0~2个月患儿230例(286眼)，选取泪囊按摩和局部点抗炎眼水治疗，182眼(63.63%)治愈；2~6个月患儿240例(340眼)，选取加压冲洗或泪道探通术治疗，338眼(96.74%)治愈；6~12个月患儿150例(188眼)，选取泪道冲洗+泪道探通术治疗，188眼(89.74%)治愈；1岁以上患儿10例(13眼)，选取泪道探通术加局部抗炎治疗，10眼(76.92%)治愈。结论：2~6个月是先天性鼻泪管阻塞治疗的最佳时间，泪道冲洗加探通技术在治疗婴幼儿先天性鼻泪管阻塞创伤小，疗效肯定，远期复发率低。

Objective: To discuss the therapeutic effects of congenital nasolacrimal duct obstruction. Methods: A total of 630 children (827 eyes) with congenital nasolacrimal duct obstruction who were treated in Xianyang Rainbow Hospital and had follow-up records were selected. According to the age, the therapeutic effects were carried out in four ways. Results: A total of 230 cases (286 eyes) aged 0–2 months were treated by massaging lacrimal sac withantiinflammatory eye water, 182 eyes (63.63%) were healed; 240 cases (340 eyes) aged 2–6 months were treated by pressor clysis and lacrimal passages probing, and among them 338 eyes (96.74%) were healed. 150 cases (188 eyes) aged 6–12 months were treated with lacrimal passage irrigation and lacrimal passage probing. 188 eyes (89.74%) were cured; 10 cases (13 eyes) aged over 1 year old were tread by probing of the lacrimal passages with anti-inflammatory eye water, 10 eyes (76.92%) were healed. Conclusion: 2 to 6 months is the best time for the treatment of congenital nasolacrimal duct obstruction, the therapy of pressor clysis with lacrimal passages probing chosen according to the age can treat the congenital nasolacrimal duct obstruction efficiently and decrease the long-term recurrence