Ishijima Kan, Teope Jonnah K, Takahashi Yasuhiro, Kakizaki Hirohiko
Sapporo Eye and Eye-Plastic Clinic, Sapporo, Hokkaido, Japan.
Department of Oculoplastic, Orbital and Lacrimal Surgery, Aichi Medical University Hospital, Nagakute, Japan.
Saudi J Ophthalmol. 2025 Jun 25;39(2):155-157. doi: 10.4103/sjopt.sjopt_63_25. eCollection 2025 Apr-Jun.
This study aimed to determine whether the upper and lower canaliculi continue to the lacrimal sac through a common opening or separately.
This retrospective cross-sectional study included the medical records of all patients who underwent external dacrycystorhinostomy or lacrimal intubation between April 1, 2024, and August 31, 2024. The canalicular opening into the lacrimal sac was examined by inserting a probe into the upper and lower puncta, and following its course into the sac using a microscope or canalicular endoscope.
Sixty-three lacrimal systems from 45 Japanese patients were included in the study. In 25 lacrimal systems (39.68%), the canaliculi shared a common opening into the lacrimal sac. In 38 lacrimal systems (60.32%), the upper and lower canaliculi opened separately into the lacrimal sac. One out of 18 bilateral cases (5.56%) showed a common opening on one side and separate openings on the other.
Separate junction of the upper and lower canaliculi to the lacrimal sac was shown in 60.32% of the cases, a prevalence higher than previously reported. Both common and separated canalicular openings may be present in different sides of the same individual.
本研究旨在确定上下泪小管是通过共同开口还是分别延续至泪囊。
这项回顾性横断面研究纳入了2024年4月1日至2024年8月31日期间接受外路泪囊鼻腔吻合术或泪道插管术的所有患者的病历。通过将探针插入上下泪点，并使用显微镜或泪道内窥镜跟踪其进入泪囊的路径，来检查泪小管进入泪囊的开口情况。
本研究纳入了45名日本患者的63个泪器系统。在25个泪器系统（39.68%）中，泪小管有一个共同的开口进入泪囊。在38个泪器系统（60.32%）中，上下泪小管分别开口进入泪囊。18例双侧病例中有1例（5.56%）一侧为共同开口，另一侧为分别开口。
60.32%的病例显示上下泪小管与泪囊分别相连，其发生率高于先前报道。同一个体的不同侧可能同时存在共同开口和分别开口的情况。
