The Experts below are selected from a list of 3777 Experts worldwide ranked by ideXlab platform
Yin Liang - One of the best experts on this subject based on the ideXlab platform.
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64-detector spiral CT of bony Lacrimal Duct
Hainan Medical Journal, 2012Co-Authors: Yin LiangAbstract:Objective To depict the parameters of the bony Lacrimal Duct and to evaluate how they are affected by sex and age.Methods Eighty-eight patients were analyzed by 64-detector spiral CT,with the parameters of bony Lacrimal Duct detected,including the anteroposterior and transverse diameters of top,midpoint and bottom of bony Lacrimal Duct,the length,and the angle between the bony canal and the nasal floor.Results The top anteroposterior diameter,top transverse diameter,midpoint anteroposterior diameter,midpoint transverse diameter,bottom anteroposterior diameter,bottom transverse diameter,the length,and the angle between the canal and the nasal floor were(5.4±1.2) mm,(4.6±0.9) mm,(4.8±1.0) mm,(4.1±1.0) mm,(6.7±1.4) mm,(4.8±1.0) mm,(13.5±2.9) mm,and(69.6±7.2)°,respectively.Male has a significantly longer canal.Conclusion 64-detectors spiral CT can serve as a reliable method to measure the bony Lacrimal Duct.
Zhu Xiu-pin - One of the best experts on this subject based on the ideXlab platform.
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Clinical analysis of 1028 cases of the therapeutic effect of laser on Lacrimal Duct obstruction
Clinical Ophthalmology, 2010Co-Authors: Zhu Xiu-pinAbstract:Objective To investigate the therapeutic effect of laser on Lacrimal Duct obstruction.Method One thousand and twenty eight patients diagnosed with Lacrimal Duct obstruction were separated into obstruction of Lacrimal canaliculus by one point group(152 cases),obstruction of naso-Lacrimal Duct group(346 cases) and obstruction of Lacrimal Duct by multi-point group(530 cases).All these patients received laser treatment.Results Pulsed laser had good curative effect on the Lacrimal Duct obstruction.The effective rate was 86.8% in obstruction of Lacrimal canaliculus by one point group,64.2% in obstruction of naso-Lacrimal Duct group,and 70.6% in obstruction of Lacrimal Duct by multi-point group.Conclusion As a simple and practical method for Lacrimal Duct obstruction,pulsed laser treatment show a great prospect for application and should be considered as the first choice for Lacrimal canaliculus by one point.
Kazuaki Kadonosono - One of the best experts on this subject based on the ideXlab platform.
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cytokine profiles of tear fluid from patients with pediatric Lacrimal Duct obstruction
Investigative Ophthalmology & Visual Science, 2017Co-Authors: Nozomi Matsumura, Satoshi Goto, Eiichi Uchio, Kyoko Nakajima, Takeshi Fujita, Kazuaki KadonosonoAbstract:Purpose This study evaluated the cytokine levels in unilateral tear samples from both sides in patients with pediatric Lacrimal Duct obstruction. Methods Fifteen cases of unilateral Lacrimal Duct obstruction (mean, 26.9 ± 28.7 months old) were enrolled in this study. Tear samples were collected separately from the obstructed side and the intact side in each case before surgery, which was performed under general anesthesia or sedation. The levels of IL-2, IL-4, IL-6, IL-10, TNF, IFN-γ, and IL-17A then were measured in each tear sample. A receiver operating characteristic (ROC) curve was constructed for the IL-6 levels in the tears. We also measured the postoperative tear fluid levels of IL-6 in those cases from which tear fluid samples could be collected after the surgery. Results Only the IL-6 concentration was significantly higher on the Lacrimal Duct-obstructed sides, compared to the control sides (P < 0.001). An ROC curve analysis for the IL-6 levels in tears showed a high value for discriminating the Lacrimal Duct-obstructed side from the control side (area under the ROC curve [AUC], 0.99; 95% confidence interval [CI], 0.968-1). Significant decrease of the tear fluid IL-6 levels was observed in the seven cases from which tear fluid samples also could be collected after the surgery (P = 0.016). Conclusions The IL-6 level in tear fluid was significantly higher on the sides with Lacrimal Duct obstruction, compared to the control sides, and could be a biomarker for pediatric Lacrimal Duct obstruction.
K.-h. Emmerich - One of the best experts on this subject based on the ideXlab platform.
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modern Lacrimal Duct surgery from the ophthalmological perspective
Deutsches Arzteblatt International, 2010Co-Authors: H W Meyerrusenberg, K.-h. EmmerichAbstract:BACKGROUND: From the 1990's onward, it has been possible to assess changes in the Lacrimal Duct by direct, minimally invasive diagnostic inspection with the aid of miniaturized endoscopes originally used in gastroduodenal surgery. It has been shown in this way that mechanical Lacrimal Duct stenosis often develops gradually as the result of recurrent chronic inflammation. Absolute stenoses are often located at a single point rather than extending over a longer segment of the Duct. METHODS: Advances in Lacrimal Duct surgery are presented through a selective review of the relevant literature. RESULTS: Roughly 70% to 80% of all mechanical stenoses of the Lacrimal Duct can be reopened during endoscopic surgery with the use of a laser or a miniaturized drill. CONCLUSION: With the methods described here, it is now possible for the first time to perform surgery that obviates the need for a bypass procedure and maintains or restores the normal physiological function of the Lacrimal system.
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modern Lacrimal Duct surgery from the ophthalmological perspective
Deutsches Arzteblatt International, 2010Co-Authors: H W Meyerrusenberg, K.-h. EmmerichAbstract:BACKGROUND: From the 1990's onward, it has been possible to assess changes in the Lacrimal Duct by direct, minimally invasive diagnostic inspection with the aid of miniaturized endoscopes originally used in gastroduodenal surgery. It has been shown in this way that mechanical Lacrimal Duct stenosis often develops gradually as the result of recurrent chronic inflammation. Absolute stenoses are often located at a single point rather than extending over a longer segment of the Duct. METHODS: Advances in Lacrimal Duct surgery are presented through a selective review of the relevant literature. RESULTS: Roughly 70% to 80% of all mechanical stenoses of the Lacrimal Duct can be reopened during endoscopic surgery with the use of a laser or a miniaturized drill. CONCLUSION: With the methods described here, it is now possible for the first time to perform surgery that obviates the need for a bypass procedure and maintains or restores the normal physiological function of the Lacrimal system.
Akira Murakami - One of the best experts on this subject based on the ideXlab platform.
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Direct endoscopic probing for congenital Lacrimal Duct obstruction.
Clinical & experimental ophthalmology, 2013Co-Authors: Hidenori Sasaki, Toshiyuki Takano, Akira MurakamiAbstract:Background The most common treatment for congenital Lacrimal Duct obstruction is standard probing without dacryoendoscopy. However, the Lacrimal Duct cannot be observed in this procedure. If the probing procedure allows the observation of the Lacrimal Duct, it could be more successful and safer. To use endoscopic probing to view the Lacrimal Duct in cases of congenital Lacrimal Duct obstruction 6 months post-surgery and to evaluate the condition of the lumen while simultaneously performing direct endoscopic probing. Design This is a retrospective, non-comparative case series. Participants The study participants were 10 children aged 14–74 months, including three children with bilateral obstruction. In total, 13 congenital Lacrimal Duct obstruction were probed. Methods The patients underwent direct endoscopic probing with dacryoendoscopy instead of blind probing, that is, standard probing without dacryoendoscopy under brief total anaesthesia. Main Outcome Measures During the procedure, outcomes were assessed as the endoscope reached the nasal cavity. A successful probing outcome was defined as an absence of tearing and discharge. Results Twelve congenital Lacrimal Duct obstruction were successfully treated by direct endoscopy, whereas one was not. There were various sites of obstruction and various conditions such as oedematous thickening of the mucosa of the Lacrimal Duct and fibrous tissue because of chronic inflammation. The subjective outcome from their parents by telephonic interview was obtained. Epiphora disappeared in 12/13 (92.3%) of the eyes treated by endoscopy; however, 5/13 (38.5%) of the patients reported occasional discharge from the eyes. Conclusions Direct endoscopic probing is effective and safe to treat cases of congenital Lacrimal Duct obstruction in children.
