External dacryocystorhinostomy (DCR) is a commonly done surgical procedure for treatment of nasolacrimal duct obstructions. Although the success rates are high, the literature reports the failure rates to range from 1 to 10 % [1, 2]. Among the causes of failure, the most common ones include occlusion of the rhinostomy by either cicatrix, common canalicular obstruction, ostium granuloma, or synechiae [3–5]. The aim of a DCR surgery is therefore twofold, not only to successfully create an ostium but also to take steps to prevent its reclosure. One such step is the use of bicanalicular stents.
Hale B, Wilson TW, Reinheimer W. Intubation of the nasolacrimal duct. Tech Ophthalmol. 2009;7:82–7.CrossRefGoogle Scholar
Merbs SL, Harris LL, Iwamoto MA, et al. Prevention of prolapsed silicone stents in lacrimal intubation using an intrasac fixation suture. Arch Ophthalmol. 1999;117:1092–5.PubMedCrossRefGoogle Scholar
Hui JI, Shriver EM, Tse DT. Intubation of the ostium and the nasolacrimal duct with a single self-linking silicone stent in external dacryocystorhinostomy. Ophthal Plast Reconstr Surg. 2011;27:87–9.PubMedCrossRefGoogle Scholar
Ali MJ, Gupta H, Naik MN, et al. Endoscopic guided single self-linked stent in pediatric external dacryocystorhinostomy. Minim Invasive Ther Allied Technol. 2013;22:266–70.PubMedCrossRefGoogle Scholar