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https://www.readbyqxmd.com/read/29324372/dislocation-of-a-cerebral-protection-device-component-during-carotid-stenting-a-case-report-of-favorable-outcome-from-conservative-management-after-failure-of-retrieval
#1
Ilaria Tocco-Tussardi, Caterina Kulyk, Vincenzo Vindigni, Giampiero Avruscio
INTRODUCTION: Cerebral-protection devices (CPDs) are a well-established system for reduction of embolic risk in carotid artery angioplasty and stenting (CAS). Although rare, adverse events with CPDs are unpredictable and can be associated with serious outcomes and iatrogenic sequelae. PRESENTATION OF CASE: We describe the unique case of dislocation of a FilterWire EX™ filter loop during right CAS. On trying to recapture the CPD filter at the end of the procedure, the filter loop suddenly detached from the guidewire and dislocated to the proximal middle cerebral artery...
December 28, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29319753/morphological-characterization-of-insect-galls-and-new-records-of-associated-invertebrates-in-a-cerrado-area-in-bahia-state-brazil
#2
V P Lima, D Calado
In this study, we report the first records and morphological characterization of galls in a Cerrado area in western Bahia, Brazil. The data were collected monthly over two hours between March and September 2015. Fifteen gall morphotypes were found in twelve plant species distributed among seven families. The plant family with the greatest richness of galls was Fabaceae (n = 8). The following gall morphologies were found: globoid, lenticular, marginal leaf roll, conical, cylindrical, fusiform, spherical and pocket shaped...
January 8, 2018: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/29245280/straight-sinus-dural-arteriovenous-fistula-presenting-with-reversible-parkinsonism-a-case-report-and-literature-review
#3
Jiali Pu, Xiaoli Si, Rong Ye, Baorong Zhang
RATIONALE: A dural arteriovenous fistula (DAVF) refers to an abnormal direct connection between an intracranial artery and a dural venous sinus. A DAVF presenting with parkinsonism is rare, and is therefore easily misdiagnosed. Therefore, early consideration of DAVF in the differential diagnosis of reversible parkinsonism is necessary. PATIENT CONCERNS: We present the case of a 51-year-old male with progressive parkinsonism. DIAGNOSES: He was diagnosed as straight sinus occlusion...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29237667/posterior-capsular-rupture-and-spontaneous-posterior-dislocation-of-lens-following-electrical-injury
#4
Devesh Kumawat, Karthikeya Ramananda, Pranita Sahay, Atul Kumar
Lenticular changes are often seen following electrical injury. We report an unusual case of electrical injury with late spontaneous posterior dislocation of lens nucleus with intact anterior capsule with ruptured posterior capsule in the right eye and anterior subcapsular cataract in the left eye. The right eye was managed with pars plana vitrectomy with cortical matter removal with multipiece intraocular lens insertion in ciliary sulcus. This report adds posterior capsular rupture and posterior dislocation of lens to the usual ocular complications of electrical injury...
December 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29208825/spatula-scaffold-an-iris-sparing-technique-for-lensectomy
#5
Priya Narang, Amar Agarwal
Lensectomy with vitrectomy is often performed for crystalline lenticular subluxation. We report a new technique and a practical approach that involves the placement of a spatula beneath the iris tissue that facilitates retroiridial removal of subluxated lens and acts as a scaffold by protecting the iris tissue from being accidentally trapped into the vitrectomy cutter port. Our technique facilitates management of the lens and vitreous without any trauma to the iris and secondarily obviates the need to perform an iris repair procedure that may arise due to iatrogenic reasons...
December 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29191662/osseous-and-adipocytic-differentiations-in-the-intraocular-lens-and-vitreous
#6
Frederick A Jakobiec, Lina Ma, Natalie Wolkow, J Douglas Cameron, Amanda C Maltry
PURPOSE: To analyze three unusual mesenchymal transformations within the eye - adipose or osseous metaplasia of the lens and adipose tissue in the vitreous cavity. DESIGN: Observational case series. METHODS: Re-evaluation of clinico-pathologic diagnoses and histopathologic findings in sections stained with hematoxylin and eosin, periodic acid-Schiff (PAS) reaction and Masson trichrome method. RESULTS: The three cases of mesenchymal transformation occurred in microphthalmic eyes with persistent hyperplastic primary vitreous (more recently termed persistent fetal vasculature)...
November 27, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29188084/lens-internal-curvature-effects-on-age-related-eye-model-and-lens-paradox
#7
Stefano Giovanzana, Tanya Evans, Barbara Pierscionek
The gradient index (GRIN) model is the most accurate way to represent the eye lens which, because of its growth mode, is a lamellar, shell-like structure. The GRIN is thought to provide optical properties that counteract age-related changes in curvature that would otherwise create an increasingly myopic eye: the so-called lens paradox. This article investigates how fine-tuning the refractive index and the internal curvatures of the lenticular indicial contours may prevent the ageing eye from becoming myopic...
November 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29172875/consider-the-eye-in-preventive-healthcare-ocular-findings-intraocular-pressure-and-schirmer-tear-test-in-ageing-cats
#8
Ellen Sandhas, Roswitha Merle, Johanna C Eule
Objectives Geriatric health screening in cats is highly recommended. However, information about normal and abnormal findings is scarce, especially regarding the eyes of ageing cats. This prospective study examined the influence of the ageing process on vision and ocular structures in older cats. Methods A total of 209 cats (aged 9-24 years) underwent physical examination, vision assessment, slit lamp biomicroscopy and ophthalmoscopy. Systolic blood pressure (SBP) measurement, Schirmer tear test (STT) reading and rebound tonometry were performed...
November 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29149722/effects-of-middle-ear-quasi-static-stiffness-on-sound-transmission-quantified-by-a-novel-3-axis-optical-force-sensor
#9
Ivo Dobrev, Jae Hoon Sim, Baktash Aqtashi, Alexander M Huber, Thomas Linder, Christof Röösli
BACKGROUND: Intra-operative quantification of the ossicle mobility could provide valuable feedback for the current status of the patient's conductive hearing. However, current methods for evaluation of middle ear mobility are mostly limited to the surgeon's subjective impression through manual palpation of the ossicles. This study investigates how middle ear transfer function is affected by stapes quasi-static stiffness of the ossicular chain. The stiffness of the middle ear is induced by a) using a novel fiber-optic 3-axis force sensor to quantify the quasi-static stiffness of the middle ear, and b) by artificial reduction of stapes mobility due to drying of the middle ear...
November 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/29133376/distinct-functions-of-starch-synthase-4-domains-in-starch-granule-formation
#10
Kuan-Jen Lu, Barbara Pfister, Camilla Jenny, Simona Eicke, Samuel C Zeeman
The formation of normal starch granules in Arabidopsis leaf chloroplasts requires STARCH SYNTHASE 4 (SS4). In plants lacking SS4, chloroplasts typically produce only one round granule rather than multiple lenticular granules. The mechanisms by which SS4 determines granule number and morphology are not understood. The N-terminal region of SS4 is unique among SS isoforms and contains several long coiled-coil motifs, typically implicated in protein-protein interactions. The C-terminal region contains the catalytic glucosyltransferase domains, which are widely conserved in plant SS and bacterial glycogen synthase (GS) isoforms...
November 13, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29127310/wavefront-aberrations-and-retinal-image-quality-in-different-lenticular-opacity-types-and-densities
#11
Cheng-Zhe Wu, Hua Jin, Zhen-Nv Shen, Ying-Jun Li, Xun Cui
To investigate wavefront aberrations in the entire eye and in the internal optics (lens) and retinal image qualities according to different lenticular opacity types and densities. Forty-one eyes with nuclear cataract, 33 eyes with cortical cataract, and 29 eyes with posterior subcapsular cataract were examined. In each group, wavefront aberrations in the entire eye and in the internal optics and retinal image quality were measured using a raytracing aberrometer. Eyes with cortical cataracts showed significantly higher coma-like aberrations compared to the other two groups in both entire eye and internal optic aberrations (P = 0...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29117419/secondary-lenticule-remnant-removal-after-smile
#12
Alex L K Ng, Peter S K Kwok, Tommy C Y Chan
PURPOSE: The authors report four cases of residual intrastromal lenticule after seemingly uneventful small incision lenticule extraction (SMILE) surgery and the outcome after a secondary procedure to remove the lenticule remnant. METHODS: Case reports. RESULTS: All four cases presented with suboptimal corrected distance visual acuity (CDVA) and refractive surprise. Irregularities in the corneal curvature and elevation were detected on corneal topography and tomography...
November 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29117415/risk-factors-for-opaque-bubble-layer-in-small-incision-lenticule-extraction-smile
#13
Liuyang Li, Julie M Schallhorn, Jiaonan Ma, Lin Zhang, Rui Dou, Yan Wang
PURPOSE: To assess the independent effect of myopia and astigmatism on the risk of the occurrence of opaque bubble layer (OBL) in small incision lenticule extraction (SMILE) and further investigate the relationship between scanning depth and OBL. METHODS: Twenty-two cases and 317 controls were included in a case-control study from the database of Tianjin Eye Hospital from April 2015 to July 2016. Baseline characteristics were recorded and all of the eyes were manually reviewed by two different observers masked to preoperative refractive status...
November 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29110086/acute-and-chronic-fluid-misdirection-syndrome-pathophysiology-and-treatment
#14
Andrzej Grzybowski, Piotr Kanclerz
PURPOSE: To summarize our current understanding of the specific pathogenic mechanisms of the fluid misdirection syndrome and possible treatment methods. METHODS: We used the PubMed web platform to find relevant studies using the following keywords: infusion misdirection syndrome, aqueous misdirection syndrome, ciliary block, ciliovitreal block, capsular block, intraoperative fluid misdirection, subcapsular fluid entrapment, acute intraoperative rock-hard eye syndrome, positive vitreous pressure glaucoma, and malignant glaucoma...
November 6, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29102838/correlations-between-working-memory-impairment-and-neurometabolites-of-prefrontal-cortex-and-lenticular-nucleus-in-patients-with-major-depressive-disorder
#15
Yanyan Shan, Yanbin Jia, Shuming Zhong, Xueguo Li, Hui Zhao, Junhao Chen, Qianyi Lu, Lu Zhang, Zhinan Li, Shunkai Lai, Ying Wang
BACKGROUND: The mechanism of working memory (WM) impairment in MDD remains unclear. We aimed to find out the mechanism by using neuropsychological tests and proton magnetic resonance spectroscopy (1H-MRS). METHODS: 31 MDD patients and 31 healthy controls were recruited in our study. The WM performance and neurometabolite ratios of prefrontal cortex (PFC) and lenticular nucleus (LN) between two groups were evaluated and compared. And the correlations between abnormal neurometabolite ratios and WM dysfunction were computed...
October 28, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29099498/clinical-spectrum-and-surgical-outcomes-in-spherophakia-a-prospective-interventional-study
#16
S Khokhar, G Pillay, S Sen, E Agarwal
PurposeTo study the varied clinical presentations of patients with spherophakia, their management using surgical methods, and the clinical outcomes.Patients and methodsA prospective interventional study of 13 patients of spherophakia who presented to us from January 2014 and were followed up over the course of their treatment, and the data were documented for analysis.ResultsIn all, 26 eyes of 13 patients were reviewed and the median age of presentation was 12±12.05 years. All patients had a bilateral presentation with 22 eyes having lenticular myopia with a mean refractive error of -11...
November 3, 2017: Eye
https://www.readbyqxmd.com/read/29066071/altered-regional-and-circuit-resting-state-activity-in-patients-with-occult-spastic-diplegic-cerebral-palsy
#17
Xuetao Mu, Zhiqun Wang, Binbin Nie, Shaofeng Duan, Qiaozhi Ma, Guanghui Dai, Chunnan Wu, Yuru Dong, Baoci Shan, Lin Ma
BACKGROUND: Very few studies have been made to investigate functional activity changes in occult spastic diplegic cerebral palsy (SDCP). The purpose of this study was to analyze whole-brain resting state regional brain activity and functional connectivity (FC) changes in patients with SDCP. METHODS: We examined 12 occult SDCP and 14 healthy control subjects using resting-state functional magnetic resonance imaging. The data were analyzed using Resting-State fMRI Data Analysis Toolkit (REST) software...
October 7, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/29053560/evaluation-of-human-corneal-lenticule-quality-after-smile-with-different-cap-thicknesses-using-scanning-electron-microscopy
#18
Shengbei Weng, Manli Liu, Xiaonan Yang, Fang Liu, Yugui Zhou, Haiqin Lin, Quan Liu
PURPOSE: To evaluate the surface characteristics of lenticules created by small-incision lenticule extraction (SMILE) with different cap thicknesses. METHODS: This prospective study included 20 consecutive patients who underwent bilateral SMILE. Surface regularity of the extracted corneal lenticule was analyzed using scanning electron microscopy (SEM) combined with 2 methods: qualitative and quantitative regularity. Qualitative regularity of SEM images was graded by masked observers using an established scoring system...
October 17, 2017: Cornea
https://www.readbyqxmd.com/read/29047503/subpixel-area-based-evaluation-for-crosstalk-suppression-in-quasi-three-dimensional-displays
#19
Zhenfeng Zhuang, Phil Surman, Qijia Cheng, Simon Thibault, Yuanjin Zheng, Xiao Wei Sun
A subpixel area-based evaluation method for an improved slanted lenticular film that minimizes the crosstalk in a quasi-three-dimensional (Q3D) display is proposed in this paper. To identify an optimal slant angle of the film, a subpixel area-based measurement is derived to evaluate the crosstalk among viewing regions of the intended subpixel and adjacent unintended subpixel by taking the real subpixel shape and black matrix into consideration. The subpixel mapping, which corresponds to the optimal slant angle of the film, can then be determined...
July 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28982612/brain-regional-iron-contents-in-progressive-supranuclear-palsy
#20
Seung Ha Lee, Chul Hyoung Lyoo, Sung Jun Ahn, Juha O Rinne, Myung Sik Lee
INTRODUCTION: To determine motor-related brain regions in which iron contents correlate with the degree of motor deficits of progressive supranuclear palsy (PSP). METHODS: Twenty-four patients with probable PSP and 20 controls were included. Using a 3.0T magnetic resonance imaging scanner, R2* values were measured in the putamen, globus pallidus (GP), substantia nigra (SN), subthalamic nucleus, and dentate nucleus. After adjustment for disease duration and age at examination, correlations between regional brain R2* values and Unified Parkinson Disease Rating Scale (UPDRS) total motor scores or subscores for bradykinesia, rigidity, tremor, or axial motor deficits were investigated...
September 28, 2017: Parkinsonism & related Disorders
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