Evaluation of the patency and position of perforated lacrimal punctal plugs implanted for treating punctal stenosis together with quantitative assessment of the precorneal tear film using anterior segment optical coherence tomography (AS-OCT). In a prospective study, the lower punctum of 54 eyes of 29 patients implanted with perforated punctal plugs were examined using AS-OCT during the early postoperative period. Preoperative tear meniscus height (TMH) and tear meniscus area (TMA) were evaluated. Postoperatively, the patency of the plug, its position, TMH and TMA were evaluated, and the results were correlated with postoperative epiphora. Munk scale was used for epiphora grading. Using AS-OCT, 48 (88.9%) plugs were found in proper position while 6 (11.1%) were rotated. The lumen of the plugs was completely patent in 47 (87%) plugs, partially obstructed in 2 (3.7%) plugs and completely occluded in 5 (9.2%) plugs. There was a statistically significant postoperative decrease of TMH and TMA (P < 0.001) and postoperative epiphora Munk score (P < 0.001). AS-OCT is a valuable, reliable, and noninvasive investigative tool that can detect the proper positioning, patency, and contents of the implanted perforated lacrimal punctal plugs in addition to measurement of TMH and TMA. Trial registration ClinicalTrials.gov ID: NCT04624022, https://clinicaltrials.gov/ct2/show/NCT04624022

中文翻译：

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前段光学相干断层扫描对植入式泪点穿孔塞的评价

使用前段光学相干断层扫描 (AS-OCT) 评估植入治疗泪点狭窄的穿孔泪管塞的通畅性和位置，以及角膜前泪膜的定量评估。在一项前瞻性研究中，在术后早期使用 AS-OCT 检查了 29 名植入穿孔泪管塞的患者的 54 只眼的下泪点。评估术前撕裂半月板高度（TMH）和撕裂半月板面积（TMA）。术后评估栓子的通畅性、位置、TMH、TMA，并与术后溢泪相关。Munk 量表用于溢泪分级。使用 AS-OCT，发现 48 个 (88.9%) 插头处于正确位置，而 6 个 (11.1%) 被旋转。插头的内腔在 47 个 (87%) 插头中完全获得专利，2 (3.7%) 个栓塞部分阻塞，5 (9.2%) 个栓塞完全阻塞。术后 TMH 和 TMA 降低（P < 0.001）和术后溢泪 Munk 评分（P < 0.001）具有统计学意义。AS-OCT 是一种有价值、可靠且无创的调查工具，除了测量 TMH 和 TMA 外，还可以检测植入的穿孔泪点塞的正确定位、通畅性和内容物。试验注册 ClinicalTrials.gov ID：NCT04624022，https://clinicaltrials.gov/ct2/show/NCT04624022 和无创检查工具，除了测量 TMH 和 TMA 外，还可以检测植入的穿孔泪点塞的正确位置、通畅性和内容物。试验注册 ClinicalTrials.gov ID：NCT04624022，https://clinicaltrials.gov/ct2/show/NCT04624022 和无创检查工具，除了测量 TMH 和 TMA 外，还可以检测植入的穿孔泪点塞的正确位置、通畅性和内容物。试验注册 ClinicalTrials.gov ID：NCT04624022，https://clinicaltrials.gov/ct2/show/NCT04624022