OBJECTIVE: The most prevalent lacrimal apparatus dysfunctions associated with differentiated thyroid cancer(DTC) after I-131 therapy are dry eye and nasolacrimal duct obstruction(NLDO), leading to ocular discomfort and lower quality of life for patients. It is crucial to diagnose and manage lacrimal apparatus dysfunction associated with I-131 therapy for DTC. Therefore, this review aims to comprehensively summarize and analyze the advances in mechanisms and therapeutic options underlying lacrimal apparatus dysfunction induced by I-131 therapy for DTC.
METHODS: A comprehensive search of CNKI, PubMed, and Wed of Science was performed from the database to December of 2023. Key search terms were \"Thyroid cancer\", \"I-131\", \"Complications\", \"Dry eye\", \"Epiphora\", \"Tear\", \"Nasolacrimal duct\" and \"NLDO\".
RESULTS: The research indicates that I-131 therapy for DTC causes damage to the lacrimal glands and nasolacrimal duct system, resulting in symptoms such as dry eye, epiphora, and mucoid secretions. Moreover, recent research has focused on exploring relevant risk factors of the condition and experimental and clinical treatments. However, there is some controversy regarding the mechanisms involved, whether it is due to the passive flow of I-131 in tears, active uptake of I-131 by the sodium-iodide symporter (NIS) in the lacrimal sac and nasolacrimal duct, or secondary metabolic and hormonal disturbances caused by I-131.
CONCLUSIONS: It is crucial for early detection and preventive measures by ophthalmologists and the need for further studies to elucidate the mechanisms underlying the disease.

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. This questionnaire, known as the Tearing Assessment and Rating Scale-12 (TEARS-12), was administered to 32 patients before and after intervention, in the form of endoscopic DCR. Statistical analysis was performed to measure internal consistency, responsiveness, and test-retest reliability.
RESULTS: Pre-operative and post-operative TEARS-12 scores (28.2 [standard error (SE) 3.19] vs 11.8 [SE 3.25], respectively, P = 0.001) demonstrated improved patient outcome within 6 weeks following endoscopic DCR. Cronbach\'s alpha for the questionnaire was 0.90, indicating high overall reliability. Additionally, each question demonstrated internal reliability, with a corrected item-total correlation greater than 0.30. The intraclass correlation between the two pre-operative scores was 0.858 (P < 0.001), indicating high test-retest reliability.
CONCLUSIONS: TEARS-12 is a statistically valid, easy-to-administer instrument to measure clinical outcomes in patients who undergo endoscopic DCR.

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. The thermal cauterization of perforating nutrient vessels during bone drilling offers a significant advantage in reducing the risk of bleeding. A review of existing limited studies comparing drill-assisted and conventional external DCR reveals advantages such as shorter surgical duration, lower intraoperative hemorrhage rate, more regular osteotomy edges, increased ostomy patency, and potential prevention of soft tissue or mucosal injuries. Nonetheless, achieving these benefits necessitates enhanced hand and foot coordination. However, despite these benefits, a noticeable gap exists in the literature concerning comprehensive studies and comparative analyses. Furthermore, exploring the associated cost and learning curve of adopting this surgical technique is essential. This report aims to fill the existing gap in the literature and serve as a visual reference for surgeons interested in adopting drill-assisted external DCR.

UNASSIGNED: The external dacryocystorhinostomy (Ex-DCR) is a reliable but surgically challenging procedure to overcome a nasolacrimal duct obstruction (NLDO). The aim of this study is to describe the outcomes of a modified technique of lacrimal sac opening and to compare it with the conventional Ex-DCR.
UNASSIGNED: This comparative cohort study included adult patients undergoing Ex-DCR for primary acquired NLDO by or under supervision of one surgeon. Group 1 (conventional Ex-DCR including H-shaped incision, anastomosis of the anterior mucosal flap to nasal mucosal flap and resection of the posterior sac flap) was compared with Group 2 (modified Ex-DCR including excision of the medial lacrimal sac and anastomosis of remaining anterior sac flap to nasal mucosal flap). Outcome measures included the success rate (defined as complete symptom relief or patent irrigation after three months), reoperation rate, redo-free survival within five years, and occurrence of postoperative bleeding and postoperative infection.
UNASSIGNED: 138 patients were included. The success rates were 94.7% (54/57 cases) for Group 1 and 96.3% (78/81) for Group 2 (p-value = 0.658). The redo-rate was 5.3% (3/75) in Group 1 and 2.5% (2/81) in Group 2 (p = 0.331). Two-year redo-free survival probability estimates were 89.8% for Group 1 and 96.3% for Group 2, respectively. No complications occurred in Group 2, whereas in Group 1, one patient (1.8%) suffered from postoperative bleeding and one (1.8%) from postoperative infection.
UNASSIGNED: This study showed that our modified Ex-DCR technique is equally efficacious compared with the conventional Ex-DCR technique in adult patients with NLDO.

Blepharophimosis-ptosis-epicanthus inversus syndrome (BPES) is a congenital eyelid syndrome. Several associations, including the horizontal displacement of the puncta, canalicular stenosis, and ectropion have been so far described. Herein, we report a one-year-old boy presented to the Oculoplastic Clinic of Farabi Eye Hospital with complaint of watery discharge from both eyes since his birth. Based on the general appearance, the diagnosis of BPES was made. Mild tear regurgitation from the inferior punctum was noted. Detailed examination showed bilateral superior punctal agenesis with coloboma of both upper eyelids and lateral displacement of the inferior puncta. Multiple unsuccessful attempts of probing were suggestive of the presence of NLDO. The patient was managed by performing canaliculodacryocystorhinostomy. Osteotomy was performed to pass the canalicular and nasolacrimal obstruction followed by a successful canaliculoplasty. Finally, the lacrimal drainage system was intubated with a mono-Crawford from the inferior punctum into the nasal cavity. On the 1st-month follow-up visit, the complaint of watery discharge was resolved. This is an extremely rare report of nasolacrimal duct and sac anomaly in a patient with blepharophimosis. Thus, we recommend the evaluation of the nasolacrimal drainage system in these patients after the first month of birth.

OBJECTIVE: Despite increased risks of nasolacrimal duct obstruction (NLDO) with age, and the continuous growth of the old population proportion, data on endoscopic dacryocystorhinostomy (eDCR) among the old is lacking. This study aims to evaluate long-term eDCR efficacy and safety in the old and oldest-old population.
METHODS: A retrospective case-control study of patients aged 80 ≤ (oldest-old) and 65-79 (old) compared with younger controls who underwent eDCR, between 2002 and 2017. Pre-, intra- and postoperative factors were collected using an integrated hospital-community system. Success rates were analyzed and measured at the first visit following surgery (immediate success), and after five years. Demographics, comorbidities, complications rates, and outcomes were compared between the groups.
RESULTS: The study groups included 52 oldest-old patients (mean age 83.4 ± 3.6), 127 old patients (72.3 ± 4.14) and 142 control patients (57.8 ± 18.0). The immediate and success rates were 94.2%, 93.7% and 90.8% and five-year success rates were 80.0%, 76.6% and 80% among oldest-old, old and controls, respectively. No significant differences in success rates were found, even despite higher comorbidity rates among the study\'s group (96 and 92.8% vs. 63.2%, among oldest-old, old and controls respectively, p <0.001). Intra- and postoperative complications rates were low in all groups.
CONCLUSIONS: Among older population, including oldest-old and old, eDCR safety and long-term outcomes are comparable with younger patients, suggesting that eDCR should be offered to NLDO patients, regardless of age.

UNASSIGNED: To study the type of bacteria and their antibiotic susceptibility pattern from corneal scrapings of patients with infectious keratitis presenting with concurrent nasolacrimal duct obstruction.
UNASSIGNED: A retrospective analysis was carried out of patients with microbial keratitis and co-existing nasolacrimal duct obstruction during a 5-year period (January 2012 to December 2016). Antibiotic susceptibility profile data was collected from the microbiology records.
UNASSIGNED: The study included 56 (M:F = 33:23; OD:OS = 34:22) eyes. The mean age of patients was 60.2 ± 12.3 years. Microscopic examination of corneal scrapings showed 52% of gram-positive (n = 29/55) and 2% of multiple (>1; n = 1/55) bacteria. Streptococcus pneumoniae (32%, n = 18/56), coagulase-negative Staphylococcus (25%, n = 14/56), and Staphylococcus aureus (11%, n = 6/56) were the most common bacteria. Streptococcus pneumoniae was found to be susceptible to ciprofloxacin (72.2%), ofloxacin (94.4%), gatifloxacin (61.1%), and moxifloxacin (83.3%).
UNASSIGNED: Corneal infection associated with nasolacrimal duct obstruction is commonly caused by gram-positive-bacteria. Irrigation of nasolacrimal duct should be mandatory test in microbial keratitis. The gram-positive bacteria isolated showed maximum susceptibility to vancomycin and cefazolin. Early treatment by surgery and appropriate medical management is recommended for its control.

The purpose of this study is to compare two dacryocystorhinostomy (DCR) techniques in epiphora treatment. This study is a prospective randomized trial. Twenty-nine patients presenting persistent epiphora due to primary acquired nasolacrimal duct obstruction (PANDO) were included in the study. Two groups each consisting of 15 eyes were formed. Mechanical transnasal endoscopic DCR (MTE-DCR) was applied to the first group, while transcanalicular dacryocystorhinostomy with multidiode laser (TCML-DCR) techniques is employed in the second group. Follow-up is conducted in the first day, first week, and first month of the dacryocystorhinostomy which is followed by 4-month follow-up period, and results were compared using statistical methods. The main outcome measures were the elimination of epiphora and unrestricted flow of irrigated saline to the nose. Seven patients were male, 22 were female, and the mean age was 39.3 ± 12.5 years. Mean follow-up times were 111.3 ± 10.5 months and 93 ± 2.9 months in group 1 and group 2, respectively. Complete resolution is achieved in group 1, whereas failures stemming from canalicular stenosis and fibrosis at osteotomy site are recorded in two cases in group 2. Occlusion occurred in the fifth month in both cases. Thus, long-term success rates were 100% in the first and 86.6% in the second group (P = 0.483). MTE-DCR is a strong substitute for external DCR. Although TCML-DCR shows promising results, it is far away from becoming the gold standard technique in epiphora treatment.

Purpose/Aim of the study: To evaluate if there is any relationship or coincidence between gastroesophageal reflux disease (GERD) and primary acquired nasolacrimal duct obstruction (PANDO).
We enrolled 180 patients with PANDO, confirmed by positive regurgitation on sac squeezing or by irrigation test. In the control group, any patient with lacrimal drainage obstruction was excluded. For diagnosis of gastroesophageal reflux we used a (Gerd Q) questionnaire by R. Jones.
According to Gerd Q, prevalence of gastroesophageal reflux in patients with PANDO was 20% (36 out of 180 patients) and in the control group, it was 10.6% (19 out of 180 patients), which was significantly higher in the presence of PANDO (p valve = 0.013). In women, 28 patients (23.5%) in the case group versus 13 patients (10.9%) in the control group has gastroesophageal reflux (p value = 0.01), which was not significant among men (p value = 0.870). When we considered age as an independent variable, results reveled significant value only for patients over 60 years old (p value = 0.008).
The prevalence of gastroesophageal reflux disease was significantly higher in patients with PANDO. This statistical relationship was greater among women and patients over 60 years old. In this study, we found an association between GERD and PANDO.