Dacryocystorhinostomy

BACKGROUND: Anti-glaucoma eye drops have been investigated due to their production of fibrotic changes on the conjunctival surface, undermining the functioning of the upper lacrimal drainage system. We aimed to assess whether these effects may impair the effectiveness of endoscopic endonasal dacryocystorhinostomy (EE-DCR). METHODS: This is a single-center observational retrospective study on EE-DCR via a posterior approach. Resolution of epiphora and dacryocystitis were analyzed after 1 (T1) and 6-months (T2) from surgery...

PURPOSE: The purpose of this study is to assess the long-term outcomes of modified transcanalicular diode laser dacryocystorhinostomy in a large cohort of patients affected by primary acquired nasolacrimal duct obstruction. METHODS: This study, conducted from January 17 to June 2022, encompassed 141 patients (159 procedures) who underwent modified transcanalicular diode laser dacryocystorhinostomy (MT-DCR). The procedure employed an 810-nm diode laser. Patients were monitored for at least a year after the intervention...

PURPOSE: Lacrimal bypass is the creation of a fistula connecting the conjunctiva with the lacrimal sac or nasal cavity. Bypass is indicated in canalicular obstruction or agenesis; sac absence, destruction or prior excision; lacrimal pump failure; or dacryocystorhinostomy failure. We aim to review the various techniques that have been developed over the last century for lacrimal bypass. METHODS: We conducted a comprehensive literature review of techniques which have focused on creating a conduit extending from the conjunctiva or canaliculi to the lacrimal sac, or extending that bypass to the nasal cavity bypass...

BACKGROUND: To determine the quality and reliability of DCR YouTube videos as patient education resources and identify any associated factors predictive of video quality. METHODS: A YouTube search was conducted using the terms "Dacryocystorhinostomy, DCR, surgery" on 12th of January 2022, with the first 50 relevant videos selected for inclusion. For each video, the following was collected: video hyperlink, title, total views, months since the video was posted, video length, total likes/dislikes, authorship (i...

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BACKGROUND: No widely accepted, validated instrument currently exists to measure clinical outcomes in patients who undergo dacryocystorhinostomy (DCR) for treatment of epiphora. OBJECTIVE: To develop a patient-reported outcome measure applicable to this population. METHODS: Psychometric evaluations, consultation with experts, and review of the literature informed item generation of a 12-question questionnaire to incorporate the most relevant symptoms experienced by patients with nasolacrimal duct obstruction...

PURPOSE: To examine the biofilm formation characteristics of bacteria identified at the genus level in samples obtained from silicone tubes after dacryocystorhinostomy surgery. METHODS: In the study involving consecutive patients who underwent dacryocystorhinostomy surgery at Ankara Bilkent City Hospital and whose silicone tubes were removed six months after surgery, between January 2023 and May 2023; the tubes were placed in glycerol-PBS (phosphate buffered saline) solution and cultured on descriptive selective media at the genus level...

BACKGROUND: Dacryocystorhinostomy surgery aims to treat nasolacrimal duct obstruction and are often performed by general ophthalmologists in developing countries. The aim of this study is to estimate the clinical burden, surgeon's experience, and outcome of dacryocystorhinostomy surgery. METHODS: A cross-sectional survey of Nepalese Ophthalmologists registered with the Nepal Ophthalmic Society was conducted after ethical clearance from Nepal Health Research Council...

PURPOSE: To investigate the utility of a hand-held digital otoscope for nasal endoscopy and as a pedagogy tool for residents and fellows in patients undergoing external dacryocystorhinostomy (DCR) surgery. METHODS: A digital otoscope (MS450-NTE, Teslong Inc., USA) comprising a digital screen device and a connectible camera probe was used for performing nasal endoscopy. Inspection of nasal cavities was performed pre-, intra-, and post-operatively in sequential patients with nasolacrimal duct obstruction, who underwent DCR or lacrimal probing...

Dacryocystorhinostomy is the gold-standard for distal lacrimal obstructions. This study aims to report the demography, clinical presentation, influence of agger nasi opening, uncinectomy and septoplasty, the use of silicone stent tubes, complications and success of endoscopic and external dacryocystorhinostomy over a period of 11 years. Retrospective review of clinical records, from January 2012 to December 2022, at a tertiary center in Portugal. A total of 249 procedures, 6 external and 243 endoscopic, were performed, including 39 revision cases...

To evaluate the outcome and complications of Endoscopic endonasal Dacryocystorhinostomy (DCR) using an inferiorly based mucosal flap as compared to a conventional posteriorly based mucosal flap with flap preservation and no stenting. 36 patients presenting with nasolacrimal duct obstruction were divided into two groups: the first group underwent endoscopic DCR using an inferiorly based mucosal flap, and the other group used a posteriorly based mucosal flap. In both groups, the mucosal flap was preserved, and bone was removed using Kerrison's punch...

PURPOSE: To study cases of hardware-associated secondary acquired lacrimal duct obstructions (SALDO) and the role of computed tomography dacryocystography (CT-DCG) scans in its diagnosis and management. OBSERVATIONS: Retrospective, interventional case review of four patients diagnosed as Hardware-associated SALDO, with primary maxillofacial repair performed elsewhere, were analyzed. The mean age was 36.5 years (range: 22-74 years), three of them being males. Left and right lacrimal systems were equally involved...

PURPOSE: The aim of this study was to describe the transcriptional changes of individual cellular components in the lacrimal sac in patients with primary acquired nasolacrimal duct obstruction (PANDO) and attempt to construct the first lacrimal sac cellular atlas to elucidate the potential mechanisms that may drive the disease pathogenesis. METHODS: Lacrimal sac samples were obtained intra-operatively during the endoscopic dacryocystorhinostomy (EnDCR) procedure from five patients...

OBJECTIVE: To report the techniques and outcomes of virtual reality (VR) and mixed reality (MR)-assisted powered endoscopic dacryocystorhinostomy (DCR) in extremely complex lacrimal drainage obstructions. METHODS: A prospective, non-randomized clinical study was performed in complex syndromic congenital nasolacrimal duct obstruction (CNLDO) and post-traumatic secondary acquired lacrimal duct obstruction (SALDO) in the setting of Le Fort fractures. All patients underwent preoperative planning in VR and intraoperative planning with a step ahead with MR assistance during the surgery...

OBJECTIVES: This study evaluates the outcomes of a one-stage obstruction-based strategy for congenital nasolacrimal duct obstruction (CNLDO) in children who have prior probing failure. The objective is to assess the success rates of probing, balloon dacrioplasty (BDP), monocanalicular intubation (MCI), and external dacryocystorhinostomy (external DCR) performed in the same anesthesia session. METHODS: A retrospective analysis included 55 eyes (45 patients, aged 12-120 months) with initial probing at another center...

This technical report aims to provide a visual guide to the drill-assisted external dacryocystorhinostomy (DCR) technique with silicone intubation. Through a step-by-step video demonstration, it addresses inherent documentation challenges and highlights crucial considerations. A critical aspect of the procedure's success lies in creating a clear space around the drilling area to prevent thermal burns and soft tissue wrapping around the burr. Additionally, it emphasizes the careful use of smaller burr diameters and the importance of drilling techniques, advocating for minimal perpendicular drilling while maintaining rotational polishing movements to minimize the risk of rapid penetration and potential nasal mucosal injury...

PURPOSE: To compare endonasal dacryocystorhinostomy (EN-DCR) with sheath-guided dacryoendoscopic probing and bicanalicular intubation (SG-BCI) by evaluating tear meniscus area (TMA) and total high-order aberrations (HOAs) for primary acquired nasolacrimal duct obstruction (PANDO). METHOD: We retrospectively reviewed 56 eyes of 42 patients (7 men, 35 women; age, 72.7±13.1 years) who underwent EN-DCR or SG-BCI for PANDO in Toyama University Hospital from February 2020 to June 2022...

BACKGROUND: This article aimed to discuss the efficacy and safety of endoscopic dacryocystorhinostomy (EDCR) versus external dacryocystorhinostomy (EX-DCR) for the treatment of dacryocystitis by meta-analysis. METHODS: All randomized controlled trials that met the inclusion and exclusion criteria were collected by searching the following databases: PubMed, Web of Science, China National Knowledge Infrastructure, and Wanfang, from the establishment of the database to June 2023...

PURPOSE: To study the metagenomics of the microbes isolated from the lacrimal sac in patients with failed dacryocystorhinostomy (DCR). METHODS: A prospective study was performed on 10 consecutive patients with failed DCR. Lacrimal sac samples were obtained for metagenomic analysis during the revision endoscopic DCR. The samples were collected intraoperatively after a full-length lacrimal sac marsupialization and immediately transported on ice to the laboratory. A whole shotgun metagenome sequencing was performed on the IlluminaTM platform following DNA extraction and library preparation...

PURPOSE: To present the first known cases of punctal and canalicular stenosis following topical 5-fluorouracil (5-FU) eye drops for ocular surface squamous neoplasia (OSSN). METHODS: A retrospective chart review of patients with OSSN receiving topical 1% 5-FU eye drops as a primary or adjuvant treatment between 2013 and 2021 was performed. Individuals diagnosed with punctal or canalicular stenosis during or after topical 5-FU use were included in this study. Four individuals met these criteria; we report clinical findings and treatment course for each patient...