Success rate of placement of a bicanalicular stent for partial nasolacrimal obstruction in adults under local, monitored anesthesia care and general anesthesia

Effectiveness of pediatric Crawford tube implants when endoscopically assisted by ENT surgeons

OBJECTIVE

Epiphora in pediatrics is commonly treated with silicone nasolacrimal stents. The most common treatment duration is 3 months, but tubes are often unintentionally removed earlier and are still effective. There is no consensus on how long tubes need to be in situ and what factors influence treatment success.

METHODS

A retrospective chart review of patients who underwent Crawford tube placement over a 10-year period (2009-2019) was conducted. Patients were age >18 years and had Crawford tubes placed in conjunction with an otolaryngologist, who performed nasal endoscopy for direct visualization when retrieving Crawford tubes and infracture of the inferior turbinate. Bicanalicular intubation was attempted in all cases; if not possible, monocanalicular intubation was performed.

RESULTS

Forty-two patients were included in this study, representing 50 eyes. Spontaneous extrusion of tubes occurred in 54% of eyes. Tubes remained in situ for an average of 17.1 weeks (0-113 weeks). Symptoms resolved in 86% of patients, similar to procedures without endoscopy. There were no intraoperative complications. There was no association between the rate of persistent symptoms and duration of treatment.

CONCLUSION

Nasolacrimal duct intubation using Crawford tubes performed under direct endoscopic visualization is consistently successful for the treatment of epiphora. Although epiphora can be self-resolving, persistent symptoms typically lasting past the first year of birth, warrant treatment. Children who receive Crawford tubes for epiphora commonly have spontaneous tube extrusion before treatment duration is complete. However, treatment success was not related to the length of time the tubes were in situ. Endoscopic visualization can help prevent intraoperative complications.

Primary balloon dacryoplasty for nasolacrimal duct obstruction in adults: a systematic review

Introduction: Acquired nasolacrimal duct obstruction (NLDO) is a major cause of epiphora. Balloon dacryoplasty (BD) is a minimally invasive procedure effectively used for congenital NLDO which has also been used in adults, instead of dacryocystorhinostomy (DCR), the current gold standard technique. The main objectives were to assess the results of BD with and without silicone tube insertion (STI) in NLDO in adults.Materiel and Method: A systematic review of literature was conducted on PubMed, SCOPUS and Cochrane databases. The articles were scanned to identify all studies that evaluated the outcomes of primary BD for NLDO in adults. The mean success rates were calculated and compared using the multiple comparisons Sidak's T-testResults: Sixty-seven articles were identified but only 13 publications matched the inclusion criteria. For partial NLDO, BD had a mean, success rate of 73.29% (64.86% with STI) with a mean follow-up of 16 months. For complete NLDO, BD had a success rate of 36.67% (52.50% with STI) with a mean follow-up of 15.5 months. Altogether the success rate of BD was significantly higher for partial NLDO compared to complete stenosis (p = 0,002).Conclusion: BD is significantly more successful for partial NLDO, without significant additional benefit from subsequent STI. The main complication would be the high recurrence rate. BD is not effective for complete NLDO with very low success rates. However, BD could be proposed for partial NLDO, as it is a safe procedure, with minimal invasiveness in comparison to DCR. Further prospective and controlled studies are required to confirm these encouraging results.

Bicanalicular Intubation with the Kaneka Lacriflow for Proximal Lacrimal Drainage System Stenosis

Purpose

The Kaneka Lacriflow CL (Lacriflow) bicanalicular lacrimal intubation system was evaluated as a self-retaining alternative to traditional modalities for stenting and dilation of the lacrimal drainage system in proximal lacrimal drainage system stenosis.

Patients and Methods

A retrospective chart review was conducted to assess the use of the Lacriflow system for treatment of patients with punctal and canalicular stenosis. Anesthesia type, operative time, and complications were assessed.

Results

In the time period evaluated, a total of 72 Lacriflow stents were placed in 45 patients, most commonly under intravenous sedation. Stents were left in place for a mean of 145 days, with 9 stents left in place for more than 1 year, and a mean follow-up time of 263 days. Early complications within 90 days included prolapse in 1 stent, symptomatic colonization for 2 stents, and corneal abrasion in 1 stent in a patient with anterior basement membrane dystrophy. Five additional stents developed colonization in the late postoperative period (four of which were more than 1 year after stent placement). The overall complication rate (per stent) at 3 months after surgery was 5.6% and at all follow-up time points was 13.9%. Operative times were significantly shorter for a cohort of patients undergoing bicanalicular intubation with the Ritleng system (P = 0.015).

Conclusion

The Lacriflow bicanalicular stent can be easily placed without general anesthesia. Complication rates are comparable to other bicanalicular intubation systems, but increase with longer time that stents are left in place.