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https://www.readbyqxmd.com/read/28917409/methods-for-assessing-forward%C3%A2-and%C3%A2-backward-light-scatter%C3%A2-in%C3%A2-patients-with%C3%A2-cataract
#1
Alja Crnej, Nino Hirnschall, Con Petsoglou, Oliver Findl
PURPOSE: To compare objective methods for assessing backward and forward light scatter and psychophysical tests in patients with cataracts. SETTING: Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom. DESIGN: Prospective case series. METHODS: This study included patients scheduled for cataract surgery. Lens opacities were grouped into predominantly nuclear sclerotic, cortical, posterior subcapsular, and mixed cataracts...
August 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28891782/functional-preference-for-object-sounds-but-not-for-voices-in-the-occipitotemporal-cortex-of-early-blind-individuals
#2
Giulia Dormal, Maxime Pelland, Mohamed Rezk, Esther Yakobov, Franco Lepore, Olivier Collignon
Sounds activate occipital regions in early blind individuals. However, how different sound categories map onto specific regions of the occipital cortex remains a matter of debate. We used fMRI to characterize brain responses of early blind and sighted individuals to familiar object sounds, human voices, and their respective low-level control sounds. In addition, sighted participants were tested while viewing pictures of faces, objects, and phase-scrambled control pictures. In both early blind and sighted, a double dissociation was evidenced in bilateral auditory cortices between responses to voices and object sounds: Voices elicited categorical responses in bilateral superior temporal sulci, whereas object sounds elicited categorical responses along the lateral fissure bilaterally, including the primary auditory cortex and planum temporale...
September 11, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28890232/complete-progressive-ophthalmoplegia-and-numb-chin-syndrome-the-first-clinical-manifestations-of-a-lethal-abdominal-burkitt-lymphoma
#3
Smaranda Maier, Rodica Bălaşa, Zoltan Bajko, Iunius Simu, Emoke Horvath
A 57-year-old patient was admitted to the Neurology Clinic for hypoesthesia, intense pain in the right chin and double vision. During the hospitalization, the patient developed progressive complete bilateral ophthalmoplegia and numbness of both sides of the chin. Brain CT and MRI scans with gadolinium were normal. Standard laboratory tests on admission were normal. The cerebral spinal fluid examination and the infectious and autoimmune workup were also normal. A thoracic-abdominal and pelvic CT scan revealed two hypodense lesions in the liver, irregular thickening of the gastric and ileal wall, and multiple abdominal adenopathies...
August 18, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28880159/bilinear-factor-matrix-norm-minimization-for-robust-pca-algorithms-and-applications
#4
Fanhua Shang, James Cheng, Yuanyuan Liu, Zhi-Quan Luo, Zhouchen Lin
The heavy-tailed distributions of corrupted outliers and singular values of all channels in low-level vision have proven effective priors for many applications such as background modeling, photometric stereo and image alignment. And they can be well modeled by a hyper-Laplacian. However, the use of such distributions generally leads to challenging non-convex, non-smooth and non-Lipschitz problems, and makes existing algorithms very slow for large-scale applications. Together with the analytic solutions to Lp-norm minimization with two specific values of p, i...
September 4, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28868275/recurrent-orbital-solitary-fibrous-tumor-in-a-12-year-old
#5
Alexander F Vu, Rao V Chundury, Alexander D Blandford, Julian D Perry
PURPOSE: To report the clinical features and pathology of orbital solitary fibrous tumors and present a case of a recurrence in a 12-year-old boy. METHODS: Case Report. RESULTS: A 12-year-old boy presented to our institution with double vision in upgaze for 6 months. Examination revealed 3 mm of left-sided proptosis, hypoglobus, and -3 impairment of supraduction. Magnetic resonance imaging of the orbits showed an avidly enhancing mass within the superolateral aspect of the orbit...
July 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/28862105/prevalence-of-convergence-insufficiency-type-symptomatology-in-parkinson-s-disease
#6
Caroline Law, Estefania Chriqui, Marie-Jeanne Kergoat, Bernard-Simon Leclerc, Michel Panisset, Elizabeth L Irving, Ronald B Postuma, Sylvain Chouinard, Hélène Kergoat
BACKGROUND: Individuals with Parkinson's disease (PD) often present with visual symptoms (e.g., difficulty in reading, double vision) that can also be found in convergence insufficiency (CI). Our objective was to estimate the prevalence of CI-type visual symptomatology in individuals with PD, in comparison with controls. METHODS: Participants ≥50 years with (n=300) and without (n=300) PD were recruited. They were administered the Convergence Insufficiency Symptom Survey (CISS-15) over the phone...
September 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28845330/mantle-cell-lymphoma-presenting-with-acute-bilateral-ophthalmoplegia
#7
Yaran Koban, Hatice Özlece, Orhan Ayar, Mustafa Koç, Hüseyin Çelik, Zeliha Yazar, Ayşe Burcu
A 72-year-old woman presented with acute onset of double vision, bilateral complete blepharoptosis, and nearly complete ophthalmoplegia. Orbital and brain magnetic resonance imaging were normal. Further investigation revealed bicytopenia with hepatosplenomegaly. Liver biopsy revealed mantle cell lymphoma. Cytology later showed the presence of mantle cells in cerebrospinal fluid analysis. Her ophthalmoplegia improved from her first cycle of systemic and intrathecal chemotherapy. To the best of our knowledge, this is the second case in the literature of mantle cell lymphoma with central nervous system involvement presenting with ophthalmoplegia...
August 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28837976/-patient-reported-treatment-satisfaction-with-stereotactic-radiotherapy-in-neovascular-age-related-macular-degeneration
#8
Maximilian Kurz, Martin Rudolf, Annekatrin Holzhey, Aljoscha S Neubauer, Salvatore Grisanti, Mahdy Ranjbar
Background Stereotactic radiotherapy (SRT) in conjunction with the common intravitreal injections (IVI) is a new adjuvant approach in neovascular age-related macular degeneration (AMD) patients. The aim of our study was to investigate factors influencing patient satisfaction one year after SRT. Methods A questionnaire was administered to 35 AMD patients who had consecutively undergone SRT using the IRay(®)-device at the Department of Ophthalmology, University of Lübeck. In addition to descriptive statistics, responses were evaluated by correlation analysis...
August 24, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28835634/altitude-control-in-honeybees-joint-vision-based-learning-and-guidance
#9
Geoffrey Portelli, Julien R Serres, Franck Ruffier
Studies on insects' visual guidance systems have shed little light on how learning contributes to insects' altitude control system. In this study, honeybees were trained to fly along a double-roofed tunnel after entering it near either the ceiling or the floor of the tunnel. The honeybees trained to hug the ceiling therefore encountered a sudden change in the tunnel configuration midways: i.e. a "dorsal ditch". Thus, the trained honeybees met a sudden increase in the distance to the ceiling, corresponding to a sudden strong change in the visual cues available in their dorsal field of view...
August 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28832924/the-effect-of-acetazolamide-on-intra-ocular-pressure-after-trendelenburg-positioning-a-randomised-double-blind-crossover-trial-in-volunteers
#10
P Vitish-Sharma, A J King, A Abbas, C Maxwell-Armstrong, B Guo, A G Acheson
Recent evidence suggests Trendelenburg positioning can produce a significant rise in intra-ocular pressure. Peri-operative vision loss in patients undergoing laparoscopic colorectal surgery has been reported with the rise in intra-ocular pressure suggested as a possible factor. Acetazolamide decreases intra-ocular pressure by reducing the formation of aqueous humour, so we aimed to investigate if it could attenuate the intra-ocular pressure rise that can occur in the Trendelenburg position. Nine healthy volunteers were recruited and randomly assigned to a double-blind crossover comparison of placebo or acetazolamide with a minimal 4 days' washout period before the second study day...
August 22, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28825890/case-245-erdheim-chester-disease
#11
Mark D Mamlouk, Mariam S Aboian, Christine M Glastonbury
History A 53-year-old man experienced headache and double vision that progressed over 1 year. After a traumatic fall, he was hospitalized, and proptosis was identified at physical examination. Laboratory tests were remarkable for leukocytosis. Hematocrit level, thyroid stimulating hormone level, autoimmune antibody level, erythrocyte sedimentation rate, and C-reactive protein level were normal. Computed tomography (CT) of the head revealed bilateral intraconal masses, for which magnetic resonance (MR) imaging of the orbits was subsequently performed ( Fig 1 )...
September 2017: Radiology
https://www.readbyqxmd.com/read/28819932/twice-daily-vs-once-daily-dosing-with-0-075-bromfenac-in-durasite-outcomes-from-a-14-day-phase-2-study
#12
William Trattler, Kamran Hosseini
INTRODUCTION: Bromfenac is a well-known topical ophthalmic nonsteroidal anti-inflammatory drug (NSAID) that is commercialized in the USA and other regions of the world. A new formulation, 0.075% bromfenac in DuraSite®, was developed to treat postoperative inflammation and reduce pain in patients who have undergone cataract surgery. We hypothesized that efficacy and safety would be enhanced with twice-daily (BID) dosing compared to once-daily (QD) dosing. METHODS: This was a multicenter, double-masked, comparative study in which 40 and 45 subjects were randomized to groups receiving BID dosing and QD dosing, respectively...
August 17, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28819801/botulinum-toxin-treatment-in-multiple-sclerosis-a-review
#13
REVIEW
Yasaman Safarpour, Tahereh Mousavi, Bahman Jabbari
Purpose of review The purpose of this review is to provide updated information on the role of botulinum neurotoxin (BoNT) therapy in multiple sclerosis (MS). This review aims to answer which symptoms of multiple sclerosis may be amenable to BoNT therapy. Recent findings We searched the literature on the efficacy of BoNTs for treatment of MS symptoms up to April 1st 2017 via the Yale University Library's search engine including but not limited to Pub Med and Ovis SP. The level of efficacy was defined according to the assessment's criteria set forth by the Subcommittee on Guideline Development of the American Academy of Neurology...
August 17, 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28768673/insidious-enemy-downside-to-prolonged-survival-in-prostate-cancer
#14
Vaishali Lodhia, Thevamalar Puspanathan
An 83-year-old man, a prostate cancer survivor of 10 years with multiple vertebral metastases presented with sudden onset of double vision. On examination he was found to have an isolated partial left abducens palsy with no other neurological deficits. Despite having microvascular risk factors, given his history of prostate cancer, aMRI brain scan was requested to look for a neurological cause. The scan revealed a metastatic lesion in the clivus encasing the cavernous sinus and carotid artery. He was referred to his oncologist for further management, however he opted out of further treatment and succumbed to his illness a month later...
August 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28754842/oral-fluoroquinolones-and-risk-of-secondary-pseudotumor-cerebri-syndrome-nested-case-control-study
#15
Mohit Sodhi, Claire A Sheldon, Bruce Carleton, Mahyar Etminan
OBJECTIVE: To quantify the risk of secondary pseudotumor cerebri syndrome (PTCS) with fluoroquinolones. METHODS: A case-control study of people 15-60 years of age from the LifeLink Database (QuintilesIMS, Parsippany, NJ) was conducted. Cases had the first ICD-9-CM code for benign intracranial hypertension (BIH) as well as having received a procedure code for an MRI or CT scan and a lumbar puncture within 15 days or 30 days of the BIH code. For each case, 10 controls were selected using density-based sampling...
August 22, 2017: Neurology
https://www.readbyqxmd.com/read/28753090/brainstem-angiocentric-glioma-report-of-2-cases
#16
Kristin J Weaver, Lexi M Crawford, Jeffrey A Bennett, Marie L Rivera-Zengotita, David W Pincus
Angiocentric glioma is a rare tumor that was recognized by the WHO Classification of Tumours of the Central Nervous System as a distinct clinicopathological entity in 2007. Since this initial description, the vast majority of cases of angiocentric glioma reported in the literature have involved tumors of the cerebral hemispheres. To date, only 1 case of angiocentric glioma arising from the posterior midbrain has been reported. The authors present the cases of 2 pediatric patients who were found to have brainstem angiocentric gliomas...
July 28, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28750481/aqueous-shunts-for-glaucoma
#17
REVIEW
Victoria L Tseng, Anne L Coleman, Melinda Y Chang, Joseph Caprioli
BACKGROUND: Aqueous shunts are employed to control intraocular pressure (IOP) for people with primary or secondary glaucomas who fail or are not candidates for standard surgery. OBJECTIVES: To assess the effectiveness and safety of aqueous shunts for reducing IOP in glaucoma compared with standard surgery, another type of aqueous shunt, or modification to the aqueous shunt procedure. SEARCH METHODS: We searched CENTRAL (which contains the Cochrane Eyes and Vision Trials Register) (2016, Issue 8), MEDLINE Ovid (1946 to August 2016), Embase...
July 28, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28737608/a-randomized-trial-of-soft-multifocal-contact-lenses-for-myopia-control-baseline-data-and-methods
#18
Jeffrey J Walline, Amber Gaume Giannoni, Loraine T Sinnott, Moriah A Chandler, Juan Huang, Donald O Mutti, Lisa A Jones-Jordan, David A Berntsen
SIGNIFICANCE: The Bifocal Lenses In Nearsighted Kids (BLINK) study is the first soft multifocal contact lens myopia control study to compare add powers and measure peripheral refractive error in the vertical meridian, so it will provide important information about the potential mechanism of myopia control. PURPOSE: The BLINK study is a National Eye Institute-sponsored, double-masked, randomized clinical trial to investigate the effects of soft multifocal contact lenses on myopia progression...
September 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28705829/regional-variation-in-undulatory-kinematics-of-two-hammerhead-species-the-bonnethead-sphyrna-tiburo-and-the-scalloped-hammerhead-sphyrna-lewini
#19
S L Hoffmann, S M Warren, M E Porter
Hammerhead sharks (Sphyrnidae) are have a large amount of morpholigcal variation within the family, making them the focus of many studies. The size of the laterally expanded head, or cephalofoil, is inversely correlated with pectoral fin area. The inverse relation in cephalofoil and pectoral fin size in this family suggests that they might serve a complimentary role in lift generation. The cephalofoil is also hypothesized to increase olfaction, electroreception, and vision; however, little is known about how morphological variation impacts post-cranial swimming kinematics...
July 13, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28675992/a-microbolometer-system-for-radiation-detection-in-the-thz-frequency-range-with-a-resonating-cavity-fabricated-in-the-cmos-technology
#20
Aleksander Sesek, Andrej Zemva, Janez Trontelj
BACKGROUND: The THz sensors using microbolometers as a sensing element are reported as one of the most sensitive room-temperature THz detectors suitable for THz imaging and spectroscopic applications. Microbolometer detectors are usually fabricated using different types of the MEMS technology. The patent for the detection system presented in this paper describes a method for microbolometer fabrication using a standard CMOS technology with advanced micromachining techniques. The measured sensitivity of the sensors fabricated by the patented method is 1000 V/W at an optimal frequency and is determined by the performance of a double-dipole antenna and quarter-wavelength resonant cavity...
July 4, 2017: Recent Patents on Nanotechnology
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