Inclination of the Superomedial Orbital Rim in Relation to that of the Nasolacrimal Drainage System

Narioka, Junji; Matsuda, Seiji; Ohashi, Yuichi

doi:10.3928/15428877-20080301-12

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…The NLD inclines posterolaterally, with the course from the entrance to the BNLD varying among individuals (Narioka, Matsuda, & Ohashi, 2008). In clinical situations, resistance often appears around the lacrimal sac BNLD angle during intubation (Narioka, Matsuda, & Ohashi, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Given that the incidence of NLD obstruction is strongly related to diameter and volume of NLD, it is also worth considering the inclination and direction of BNLD (Bulbul et al, 2016; Narioka et al, 2008; Park et al, 2019; Takahashi et al, 2013a). Moreover, the narrowing of BNLD is already thought to be a key factor in the development of primary acquired NLD obstruction (Takahashi et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

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3D morphological classification of the nasolacrimal duct: Anatomical study for planning treatment of tear drainage obstruction

Lee

Yang

et al. 2020

Clinical Anatomy

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Background The purpose of this study is to analyze and classify morphological features of the nasolacrimal duct (NLD) through 3D reconstruction to help understand the causes and treatment of NLD obstruction. Methods In this study, we included 63 males and 55 females who underwent autopsy without NLD obstruction with ages ranging from 20 to 78 years. The NLD was defined from the lacrimal fossa to the opening of the BNLD to the inferior meatus, and all continuous CT images showing the NLD were selected. Segmentation was performed semi‐automatically, and the reconstruction and measurement of NLD was performed using the Mimics program. Results Overall NLD length, bony nasolacrimal duct (BNLD) length, anteroposterior and transverse diameters at the entrance to the BNLD, anteroposterior and transverse smallest diameters of the BNLD, BNLD volume, and lacrimal sac BNLD angle were significantly higher in males than females (p < .05). BNLD direction in the coronal plane was slightly more likely to be inward. The most common type in both sexes was cylinder type (42.0%), males were more likely to have lower‐thicker types (34.1%), and females more likely to have upper‐thicker types (22.7%). Conclusion There were sex differences in NLD measurements, and females had significantly smaller NLDs. These results may partially explain the increased prevalence of primary acquired NLD obstruction in females. The BNLD tends toward the midline, and inclines posteriorly.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

3D morphological classification of the nasolacrimal duct: Anatomical study for planning treatment of tear drainage obstruction

Lee

Yang

et al. 2020

Clinical Anatomy

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“…Much of this has been made possible by the development of the technique of transcanalicular laser DCR (Narioka et al, 2008). On purpose to increase the success rate of the procedure, the use of silicone tubes in DCR is quite common (Bousch et al, 1994;Rosen et al, 1997), although its beneficial effects have not been proven unequivocally (Smirnov et al, 2008;Saiju et al, 2009;Feng et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Study of microbial growth on silicone tubes after transcanalicular laser-assisted dacryocystorhinostomy and correlation with patency

et al. 2017

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Introduction:Intubation in primary transcanalicular laser assisted dacryocystorhinostomy (TCLADCR) is performed to increase the success rates. However, the associated inflammation and infection can have adverse effects. Objective: To study the microbial infection and drug susceptibility of extubated silicone tubes and final anatomical patency in patients undergoing TCLADCR. Materials and methods: A non-randomised prospective interventional study was conducted in a tertiary care eye centre. The study included twenty consecutive adult patients with primary nasolacrimal duct obstruction. They underwent TCLADCR with bicanalicular silicone intubation. The stents were removed at 2 months and subjected to culture sensitivity, followed by administration of appropriate antimicrobial agents. Main outcome measures studied were the microbial spectrum on the cultured tubes, their sensitivity profile and its correlation with final anatomical patency. Results: A positive culture was obtained in 100% cases, comprising of normal commensals and pathogenic organisms. Of the total 24 isolates, 16 (66.6%) Gram positive bacteria (75% Staphylococcus aureus) and 8 (33.3%) Gram negative bacteria (commonest E.coli) were found, with 4 tubes having more than one isolate. No fungal growth was seen. Ninety percent success rate was achieved at one year following appropriate antimicrobial therapy except in 2 patients with gram negative isolates who had failed to take the prescribed antibiotics following sensitivity reports. There was no correlation between multiple infections and success rate. However, by using the Fisher exact test, a positive correlation was obtained between appropriate antibiotic treatment and the final anatomical patency (p<0.05). Conclusion: Silicone intubation predisposes to microbial growth, which if neglected, can lead to failure of TCLADCR.

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“…The reason for the curvature was to avoid contact with the supraorbital margin and the medial palpebral ligament when the dacryoendoscope was inserted into the nasolacrimal duct. 8 , 9 …”

Section: Methodsmentioning

confidence: 99%

Air-insufflated high-definition dacryoendoscopy yields significantly better image quality than conventional dacryoendoscopy

Sasaki¹,

Sounou²,

Tsuji³

et al. 2017

OPTH

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PurposeTo facilitate the analysis of lacrimal conditions, we utilized high-definition dacryoendoscopy (HDD) and undertook observations with a pressure-controlled air-insufflation system. We report the safety and performance of HDD.MethodsIn this retrospective, non-randomized clinical trial, 46 patients (14 males and 32 females; age range 39–91 years; mean age ± SD 70.3±12.0 years) who had lacrimal disorders were examined with HDD and conventional dacryoendoscopy (CD). The high-definition dacryoendoscope had 15,000 picture element image fibers and an advanced objective lens. Its outer diameter was 0.9–1.2 mm. Air insufflation was controlled at 0–20 kPa with a digital manometer-based pressure-controlled air-insufflation system to evaluate the quality of the image. The HDD had an air/saline irrigation channel between the outer sheath (outer diameter =1.2 mm) and the metal inner sheath of the endoscope. We used it and the CD in air, saline, and diluted milk saline with and without manual irrigation to quantitatively evaluate the effect of air pressure and saline irrigation on image quality.ResultsIn vivo, the most significant improvement in image quality was demonstrated with air-insufflated (5–15 kPa) HDD, as compared with saline-irrigated HDD and saline-irrigated CD. No emphysema or damage was noted under observation with HDD. In vitro, no significant difference was demonstrated between air-insufflated HDD and saline-irrigated HDD. In vitro, the image quality of air-insufflated HDD was significantly improved as compared with that of saline-irrigated CD.ConclusionPressure-controlled (5–15 kPa) air-insufflated HDD is safe, and yields significantly better image quality than CD and saline-irrigated HDD.

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Inclination of the Superomedial Orbital Rim in Relation to that of the Nasolacrimal Drainage System

Cited by 8 publications

References 7 publications

3D morphological classification of the nasolacrimal duct: Anatomical study for planning treatment of tear drainage obstruction

3D morphological classification of the nasolacrimal duct: Anatomical study for planning treatment of tear drainage obstruction

Study of microbial growth on silicone tubes after transcanalicular laser-assisted dacryocystorhinostomy and correlation with patency

Air-insufflated high-definition dacryoendoscopy yields significantly better image quality than conventional dacryoendoscopy

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