Abstract：
BACKGROUND: The pigtail was used to create an opening at the lower punctal site in grade 0 stenosis with insertion of self-retaining tube and Mitomycin C (MMC).
METHODS: The patients with acquired lower punctal stenosis (grade 0) were divided randomly into equal groups, Group A: were treated with pigtail and MMC 0.02% and Group B: were treated with pigtail alone. The pigtail was inserted through the upper punctum until its tip reached the occluded punctum, this site was incised with a scalpel (No. 11). A self-retaining bicanalicular tube was then placed.
RESULTS: Results of 36 eyes from 26 patients were included. No differences were observed between both groups regarding epiphora score, FDD test and punctal size preoperatively. The postoperative epiphora score, there were significant differences at 1 month (P = 0.035), 3 months (P = 0.005), and 6 months after removal (P < 0.001). The FDD test, there were significant differences at 6 months (P = 0.045), 1 month (P = 0.021), 3 months (P = 0.012), and 6 months post tube removal (P = 0.005). The punctal size, both groups differed at 1 month (P = 0.045), 3 months (P = 0.03), and 6 months post tube removal (P = 0.005). Only one case (5.5%) at each group showed extrusion of the tube.
CONCLUSIONS: The pigtail probe, bicanalicular stent and MMC can be an effective method in treatment of severe punctal stenosis.
METHODS: The patients with acquired lower punctal stenosis (grade 0) were divided randomly into equal groups, Group A: were treated with pigtail and MMC 0.02% and Group B: were treated with pigtail alone. The pigtail was inserted through the upper punctum until its tip reached the occluded punctum, this site was incised with a scalpel (No. 11). A self-retaining bicanalicular tube was then placed.
RESULTS: Results of 36 eyes from 26 patients were included. No differences were observed between both groups regarding epiphora score, FDD test and punctal size preoperatively. The postoperative epiphora score, there were significant differences at 1 month (P = 0.035), 3 months (P = 0.005), and 6 months after removal (P < 0.001). The FDD test, there were significant differences at 6 months (P = 0.045), 1 month (P = 0.021), 3 months (P = 0.012), and 6 months post tube removal (P = 0.005). The punctal size, both groups differed at 1 month (P = 0.045), 3 months (P = 0.03), and 6 months post tube removal (P = 0.005). Only one case (5.5%) at each group showed extrusion of the tube.
CONCLUSIONS: The pigtail probe, bicanalicular stent and MMC can be an effective method in treatment of severe punctal stenosis.
摘要：
背景：猪尾用于在0级狭窄中插入自固支管和丝裂霉素C（MMC）的情况下在较低的泪点部位创建开口。
方法：将获得性下泪点狭窄（0级）患者随机分为两组，A组:用猪尾和0.02%MMC治疗,B组:单独用猪尾治疗。猪尾通过上泪点插入，直到其尖端到达闭塞的泪点，这个部位是用手术刀切开的(编号11).然后放置自保持的双管。
结果：纳入26例患者的36只眼的结果。两组之间关于顿唇评分没有观察到差异，术前FDD测试和泪点大小。术后泪溢评分,1个月时差异有统计学意义(P=0.035),3个月（P=0.005），去除后6个月（P<0.001）。FDD测试,6个月时差异有统计学意义(P=0.045),1个月（P=0.021），3个月（P=0.012），拔管后6个月（P=0.005）。泪点大小,两组在1个月时存在差异(P=0.045)，3个月（P=0.03），拔管后6个月（P=0.005）。每组只有1例(5.5%)显示出管的挤出。
结论：猪尾探针，双管支架和MMC是治疗严重泪点狭窄的有效方法。
方法：将获得性下泪点狭窄（0级）患者随机分为两组，A组:用猪尾和0.02%MMC治疗,B组:单独用猪尾治疗。猪尾通过上泪点插入，直到其尖端到达闭塞的泪点，这个部位是用手术刀切开的(编号11).然后放置自保持的双管。
结果：纳入26例患者的36只眼的结果。两组之间关于顿唇评分没有观察到差异，术前FDD测试和泪点大小。术后泪溢评分,1个月时差异有统计学意义(P=0.035),3个月（P=0.005），去除后6个月（P<0.001）。FDD测试,6个月时差异有统计学意义(P=0.045),1个月（P=0.021），3个月（P=0.012），拔管后6个月（P=0.005）。泪点大小,两组在1个月时存在差异(P=0.045)，3个月（P=0.03），拔管后6个月（P=0.005）。每组只有1例(5.5%)显示出管的挤出。
结论：猪尾探针，双管支架和MMC是治疗严重泪点狭窄的有效方法。
