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https://www.readbyqxmd.com/read/29350266/normative-measurements-of-inferior-oblique-muscle-thickness-in-japanese-by-magnetic-resonance-imaging-using-a-new-technique
#1
Maria Suzanne Sabundayo, Hirohiko Kakizaki, Yasuhiro Takahashi
PURPOSE: To measure the thickness of the inferior oblique muscle (IOM) among Japanese by magnetic resonance imaging (MRI) using a new technique. METHODS: This retrospective observational study included 78 patients (36 males and 42 females) who underwent MRI for detection of a unilateral orbital lesion or examining causes of unilateral retrobulbar pain. The thickness of the IOM was measured on the side without the orbital lesion or symptom. On the quasi-sagittal plane through the optic nerve, the major and minor axes of the cross-section of the IOM were measured...
January 19, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29342845/anesthetic-preconditioning-as-endogenous-neuroprotection-in-glaucoma
#2
Tsung-Han Chou, Ganeswara Rao Musada, Giovanni Luca Romano, Elizabeth Bolton, Vittorio Porciatti
Blindness in glaucoma is the result of death of Retinal Ganglion Cells (RGCs) and their axons. RGC death is generally preceded by a stage of reversible dysfunction and structural remodeling. Current treatments aimed at reducing intraocular pressure (IOP) are ineffective or incompletely effective in management of the disease. IOP-independent neuroprotection or neuroprotection as adjuvant to IOP lowering in glaucoma remains a challenge as effective agents without side effects have not been identified yet. We show in DBA/2J mice with spontaneous IOP elevation and glaucoma that the lifespan of functional RGCs can be extended by preconditioning RGCs with retrobulbar lidocaine in one eye at four months of age that temporary blocks RGC axonal transport...
January 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29341940/mucocele-of-the-sphenoid-sinus
#3
Karen B Djambazov, Borislav D Kitov, Christo B Zhelyazkov, Atanas N Davarski, Alexandrina R Topalova
Mucocele of the paranasal sinuses is a rare disease with slow evolution. It is a benign, encapsulated and destructive formation filled with mucous fluid and tapistrated with respiratory epithelium. Of all the paranasal sinuses, the sphenoid sinus is affected in only 1-7% of the cases. We present two cases of mucocele of the sphenoid sinus involving the posterior ethmoidal cells. We consider here their clinical presentation, use of neuroimaging in the diagnosis, surgical care and postoperative results. Both patients presented with a history of persistent headache and in addition, one of them had a paresis of the right oculomotor and abducens nerves...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29329570/exophthalmos-in-a-young-woman-with-no-graves-disease-a-case-report-of-igg4-related-orbitopathy
#4
Annamaria Erdei, Zita Steiber, Csaba Molnar, Ervin Berenyi, Endre V Nagy
BACKGROUND: Immunoglobulin G4-related disease (IgG4-rd) is characterized by lymphoplasmacytic infiltration and tissue fibrosis. Orbital manifestations of IgG4-rd may include unilateral or bilateral proptosis, cicatricial extraocular muscle myopathy, orbital inflammation and pain which may mimic ophthalmic Graves' disease. CASE PRESENTATION: A 25-year-old woman has been referred to the endocrinology clinic, 4 months after delivery, with suspected Graves' orbitopathy...
January 12, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29319139/the-role-of-99mtc-dtpa-retrobulbar-spect-in-staging-and-follow-up-of-graves-orbitopathy
#5
László Galuska, Sándor Barna, József Varga, Ildikó Garai, Endre V Nagy
The pathogenesis of Graves' orbitopathy (GO) is not completely understood. Coexistent hyperfunction of the thyroid gland is frequent; however, GO may also coexist with hypo- or euthyrodism. The course of GO is largely independent of thyroid function, although elevated serum TSH is known to negatively interfere with GO course. GO is severe in 10 % of the cases; sight threatening complications may also develop. A successful therapy of GO requires the assesment of both the severity and activity of orbital inflammation...
January 10, 2018: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/29284873/optimal-dose-of-dexmedetomidine-retrobulbar-anesthesia-during-phacoemulsification-cataract-surgery
#6
Ahmed Ahmed Nagy, Saber Hamed El-Sayd, Ahmed Abdelaziz Ahmed, Ghada Zin-Eldin Rajab
Background: The cataract surgery anesthesia should be to make the procedure as safe and as satisfactory as possible for all concerned. The recent progress in anesthesia and surgery now allow cataract extraction to be done with minimal physiological changes to the patient. We aimed in the study to compare between two different doses of dexmedetomidine combined with lidocaine and bupivacaine during retrobulbar anesthesia for cataract extraction by phacoemulsification. Materials and Methods: This study was done on forty patients with cataract...
October 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29283130/color-doppler-imaging-of-the-retrobulbar-circulation-and-plasmatic-biomarkers-of-vascular-risk-in-age-related-macular-degeneration-a-pilot-study
#7
Fermin Rodrigo, José María Ruiz-Moreno, Juan Bernabé García, María Eugenia Torregrosa, José Vicente Segura, David P Piñero
PURPOSE: To evaluate preliminarily and compare the level of plasmatic biomarkers of vascular risk in patients with and without exudative age-related macular degeneration (ARMD) and to relate it to vascular resistance alterations in the ophthalmic artery (OA), central retinal artery (CRA), posterior temporal ciliary artery (PTCA), and posterior nasal ciliary artery (PNCA). METHODS: Color Doppler imaging of the OA, CRA, PTCA, and PNCA was performed in 30 eyes of 30 cataract patients (control group) as well as in 30 eyes of 30 patients with naive exudative ARMD (study group), measuring the peak systolic velocity, end-diastolic velocity (EDV), and Pourcelot resistive index (RI)...
January 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29259548/differential-effects-of-parkinson-s-disease-on-interneuron-subtypes-within-the-human-anterior-olfactory-nucleus
#8
Isabel Ubeda-Bañon, Alicia Flores-Cuadrado, Daniel Saiz-Sanchez, Alino Martinez-Marcos
Synucleinopathies (including α-synucleinopathies), which include Parkinson's disease (PD), manifest themsevles early on (stage 1) in the olfactory system; preferentially in the anterior olfactory nucleus (AON). In particular, the non-motor, early manifestations of PD include hyposmia, which is the partial loss of the sense of smell. The neural basis of hyposmia in PD, however, is poorly understood; but the AON appears to be a key structure in the disease's progression. We analyzed whether α-synuclein was involved in the differential interneuron vulnerability associated with PD in the retrobulbar, cortical anterior and cortical posterior divisions of the AON...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29251394/optic-neuritis-in-dogs-96-cases-1983-2016
#9
Sara M Smith, Hans D Westermeyer, Christopher L Mariani, Brian C Gilger, Michael G Davidson
OBJECTIVE: To characterize ocular and neurologic findings, causes, and treatment outcomes of dogs with optic neuritis. PROCEDURE: Medical records from dogs with a diagnosis of optic neuritis at North Carolina State University, College of Veterinary Medicine, Veterinary Hospital between 1983 and 2016 were reviewed. RESULTS: Ninety-six cases (20 unilateral, 76 bilateral), comprised of 38 males and 58 females with a mean age of 6.1 ± 3.0 years (range 0...
December 18, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29244093/commentary-on-efficacy-of-retrobulbar-hyaluronidase-injection-for-vision-loss-resulting-from-hyaluronic-acid-filler-embolization
#10
Claudio DeLorenzi
No abstract text is available yet for this article.
December 13, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29239798/retrobulbar-hematoma-a-systematic-review-of-factors-related-to-outcomes
#11
Brian Christie, Lisa Block, Yue Ma, Alexandra Wick, Ahmed Afifi
INTRODUCTION: Retrobulbar hematoma (RBH), a rare but serious condition, can result in permanent vision loss. Although it is a known complication following trauma or facial fracture reduction, sinus surgery, or blepharoplasty, factors related to patient outcomes are not well-defined. A systematic review was performed to determine the relation of patient/treatment factors to outcomes. METHODS: Articles retrieved from a PubMed search (1989-2017) were reviewed. Demographic information, etiology, symptoms, and final vision outcomes were analyzed using Fisher's exact tests, single and multiple predictor logistic regression...
November 24, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/29237670/spontaneous-retrobulbar-haemorrhage-in-idiopathic-thrombocytopenic-purpura
#12
Filipa Caiado de Sousa, Joana Pinto Medeiros, Raquel Marques, Carlos Marques-Neves
No abstract text is available yet for this article.
December 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29217740/optic-nerve-measurement-on-mri-in-the-pediatric-population-normative-values-and-correlations
#13
C E Al-Haddad, M G Sebaaly, R N Tutunji, C J Mehanna, S R Saaybi, A M Khamis, R G Hourani
BACKGROUND AND PURPOSE: Few articles in the literature have looked at the diameter of the optic nerve on MR imaging, especially in children, in whom observations are subjective and no normative data exist. The aim of this study was to establish a data base for optic nerve diameter measurements on MR imaging in the pediatric population. MATERIALS AND METHODS: This was a retrospective study on the MR imaging of pediatric subjects (younger than 18 years of age) at the Department of Diagnostic Radiology at the American University of Beirut Medical Center, Beirut, Lebanon...
December 7, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29204243/erratum-to-inter-device-reproducibility-of-retrobulbar-blood-flow-velocity-measurements-in-healthy-subjects-using-color-doppler-imaging
#14
Alice Chandra Verticchio Vercellin, Carlo A Cutolo, Carolina Dellafiore, Massimiliano Lava, Carmine Tinelli, Annalisa De Silvestri, Fabrizio Calliada, Giovanni Milano
[This corrects the article DOI: 10.1007/s40477-016-0194-5.].
December 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/29194271/severe-retrobulbar-pain-in-an-undiagnosed-patient-of-atypical-fracture-of-sphenozygomatic-region
#15
Rohit Sharma, Shailey Singh
No abstract text is available yet for this article.
November 20, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29189541/a-comparison-of-retrobulbar-versus-topical-anesthesia-in-trabeculectomy-and-aqueous-shunt-surgery
#16
Alex Theventhiran, Muhammad Shabsigh, Carlos Gustavo V De Moraes, George A Cioffi, Mohammed Kamel, Dana Blumberg, Lama A Al-Aswad
PURPOSE: To compare the required supplemental anesthesia and postoperative patient pain score in individuals undergoing glaucoma surgery under topical anesthesia (TA) versus retrobulbar anesthesia (RB). MATERIALS AND METHODS: A retrospective, interventional, comparative cohort study. 259 eyes of 225 patients undergoing glaucoma and combined glaucoma with cataract surgery were included in the study. The main outcome measures were the amount of supplemental, systemic intraoperative anesthesia used and the postoperative pain scale between patients undergoing TA versus RB anesthesia...
November 17, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29167184/retrobulbar-heavy-liquid-discovered-5-years-postvitrectomy
#17
David M Hille, Fionn Coughlan, Ian L McAllister, Kevin P Kennelly
No abstract text is available yet for this article.
November 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29165033/a-comparison-of-various-methods-of-blood-sampling-in-mice-and-rats-effects-on-animal-welfare
#18
V S Harikrishnan, Axel K Hansen, Klas Sp Abelson, Dorte B Sørensen
This study was conducted to investigate the effects of blood sampling on animal welfare in a total of 60 NTac:SD rats and 72 C57BL/6NTac mice of both sexes. Blood was sampled either by sublingual vein puncture, tail vein puncture or by retrobulbar plexus/sinus puncture under light isoflurane anaesthesia and, additionally, by facial vein puncture in mice. Non-punctured animals as well as isoflurane-anaesthetised animals were used as controls. Pre- and post-puncture sucrose intake (1.5% w/w) was measured in rats, and nest building scores were studied in mice for 24 h post-puncture...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/29155782/partial-optic-nerve-transection-in-rats-a-model-established-with-a-new-operative-approach-to-assess-secondary-degeneration-of-retinal-ganglion-cells
#19
Fancheng Yan, Sailiang Guo, Yijie Chai, Lan Zhang, Kegao Liu, Qingjun Lu, Ningli Wang, Shuning Li
Previous studies have shown that the secondary degeneration of retinal ganglion cells (RGCs) occurs commonly in glaucoma. Partial optic nerve transection is considered a useful and reproducible model. Compared with other optic nerve injury models used commonly for assessing secondary degeneration, e.g. complete optic nerve transection and optic nerve crush models, the partial optic nerve transection model is superior as it distinguishes primary from secondary degeneration in situ. Therefore, it serves as an excellent tool for evaluating secondary degeneration...
October 15, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29148158/long-term-anesthetic-protocol-in-rats-feasibility-in-electrophysiology-studies-in-visual-prosthesis
#20
Alejandro Barriga-Rivera, Veronica Tatarinoff, Nigel H Lovell, John W Morley, Gregg J Suaning
Electrical stimulation of excitable cells provides therapeutic benefits for a variety of medical conditions, including restoration of partial vision to those blinded via some types of retinal degeneration. To improve visual percepts elicited by the current technology, researchers are conducting acute electrophysiology experiments, mainly in cats. However, the rat can provide a model of a range of retinal diseases and possesses a sufficiently large eye to be used in this field. This article presents a long-term anesthetic protocol to enable electrophysiology experiments to further the development of visual prostheses...
November 17, 2017: Veterinary Ophthalmology
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