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https://www.readbyqxmd.com/read/28345574/differential-cataract-blindness-by-sex-in-india-evidence-from-two-large-national-surveys
#1
Hira B Pant, Souvik Bandyopadhyay, Neena John, Anil Chandran, Murthy Venkata S Gudlavalleti
AIMS: Women suffer disproportionately more from cataract blindness compared to males in low- and middle-income countries. Two large population-based surveys have been undertaken in India at an interval of 7 years and data from these surveys provided an opportunity to assess the trends in gender differentials in cataract blindness. MATERIALS AND METHODS: Data were extracted from the surveys to discern sex differences in cataract blindness. Multivariate analysis was performed to adjust for confounders and their impact on gender differences in cataract blindness...
February 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28343870/cd15-focus-score-infection-diagnosis-and-stratification-into-low-virulence-and-high-virulence-microbial-pathogens-in-periprosthetic-joint-infection
#2
V T Krenn, M Liebisch, B Kölbel, N Renz, T Gehrke, M Huber, M G Krukemeyer, A Trampuz, H Resch, V Krenn
INTRODUCTION: The aim of the work was to validate the CD15 focus score for the infection pathology of periprosthetic joint infection in a large group and to clarify whether a stratification into low-virulence and high-virulence microbial pathogens is possible by means of the CD15 focus score (quantification of CD15 positive granulocytes). METHODS: The histopathology of 275 synovial tissue samples taken intraoperatively during revision operations (n=127 hip, n=141 knee, n=2 shoulder, n=5 ankle) was evaluated according to the SLIM consensus classification (SLIM=synovial-like interface membrane)...
January 12, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28341475/genotypic-and-phenotypic-characteristics-of-crb1-associated-retinal-dystrophies-a-long-term-follow-up-study
#3
Mays Talib, Mary J van Schooneveld, Maria M van Genderen, Jan Wijnholds, Ralph J Florijn, Jacoline B Ten Brink, Nicoline E Schalij-Delfos, Gislin Dagnelie, Frans P M Cremers, Ron Wolterbeek, Marta Fiocco, Alberta A Thiadens, Carel B Hoyng, Caroline C Klaver, Arthur A Bergen, Camiel J F Boon
PURPOSE: To describe the phenotype, long-term clinical course, clinical variability, and genotype of patients with CRB1-associated retinal dystrophies. DESIGN: Retrospective cohort study. PARTICIPANTS: Fifty-five patients with CRB1-associated retinal dystrophies from 16 families. METHODS: A medical record review of 55 patients for age at onset, medical history, initial symptoms, best-corrected visual acuity, ophthalmoscopy, fundus photography, full-field electroretinography (ffERG), Goldmann visual fields (VFs), and spectral-domain optical coherence tomography...
March 13, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28340553/promoting-independence-health-and-well-being-for-older-people-a-feasibility-study-of-computer-aided-health-and-social-risk-appraisal-system-in-primary-care
#4
Kate Walters, Kalpa Kharicha, Claire Goodman, Melanie Handley, Jill Manthorpe, Mima Cattan, Steve Morris, Caroline S Clarke, Jeff Round, Steve Iliffe
BACKGROUND: With population ageing, research is needed into new low-cost, scalable methods of effective promotion of health and wellbeing for older people. We aimed to assess feasibility, reach and costs of implementing a new tailored computer-aided health and social risk appraisal system in primary care. METHODS: Design: Feasibility study. SETTING: Five General Practices in London (Ealing) and Hertfordshire, United Kingdom (UK) Participants: Random sample of patients aged 65 + years...
March 24, 2017: BMC Family Practice
https://www.readbyqxmd.com/read/28338557/ruthenium-106-brachytherapy-in-the-treatment-of-circumscribed-choroidal-hemangioma
#5
Masood Naseripour, Arash Maleki, Arezoo Astaraki, Ahad Sedaghat, Ramin Jaberi, Stacey Lee, Zohreh Azma, Sukhum Silpa-Archa
PURPOSE: To examine the efficacy and safety of Ruthenium-106 plaque radiotherapy in the treatment of circumscribed choroidal hemangioma. METHODS: Twenty-one eyes of 21 patients diagnosed with symptomatic circumscribed choroidal hemangioma who underwent Ruthenium-106 plaque radiotherapy were included in the study. Clinical response, ancillary tests finding improvement, and major side effects were evaluated. RESULTS: From the initial to the 1-year follow-up visits, vision improved in 12 eyes (57%), was stable in 7 eyes (33%), and became worse in 2 eyes (10%)...
March 23, 2017: Retina
https://www.readbyqxmd.com/read/28336221/the-use-of-contact-lens-telescopic-systems-in-low-vision-rehabilitation
#6
REVIEW
Stephen J Vincent
Refracting telescopes are afocal compound optical systems consisting of two lenses that produce an apparent magnification of the retinal image. They are routinely used in visual rehabilitation in the form of monocular or binocular hand held low vision aids, and head or spectacle-mounted devices to improve distance visual acuity, and with slight modifications, to enhance acuity for near and intermediate tasks. Since the advent of ground glass haptic lenses in the 1930's, contact lenses have been employed as a useful refracting element of telescopic systems; primarily as a mobile ocular lens (the eyepiece), that moves with the eye...
March 20, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28335486/implicit-regularization-for-reconstructing-3d-building-rooftop-models-using-airborne-lidar-data
#7
Jaewook Jung, Yoonseok Jwa, Gunho Sohn
With rapid urbanization, highly accurate and semantically rich virtualization of building assets in 3D become more critical for supporting various applications, including urban planning, emergency response and location-based services. Many research efforts have been conducted to automatically reconstruct building models at city-scale from remotely sensed data. However, developing a fully-automated photogrammetric computer vision system enabling the massive generation of highly accurate building models still remains a challenging task...
March 19, 2017: Sensors
https://www.readbyqxmd.com/read/28335445/deciphering-egyptian-hieroglyphs-towards-a-new-strategy-for-navigation-in-museums
#8
Jaime Duque-Domingo, Pedro Javier Herrera, Enrique Valero, Carlos Cerrada
This work presents a novel strategy to decipher fragments of Egyptian cartouches identifying the hieroglyphs of which they are composed. A cartouche is a drawing, usually inside an oval, that encloses a group of hieroglyphs representing the name of a monarch. Aiming to identify these drawings, the proposed method is based on several techniques frequently used in computer vision and consists of three main stages: first, a picture of the cartouche is taken as input and its contour is localized. In the second stage, each hieroglyph is individually extracted and identified...
March 14, 2017: Sensors
https://www.readbyqxmd.com/read/28335436/photonic-low-cost-micro-sensor-for-in-line-wear-particle-detection-in-flowing-lube-oils
#9
Jon Mabe, Joseba Zubia, Eneko Gorritxategi
The presence of microscopic particles in suspension in industrial fluids is often an early warning of latent or imminent failures in the equipment or processes where they are being used. This manuscript describes work undertaken to integrate different photonic principles with a micro- mechanical fluidic structure and an embedded processor to develop a fully autonomous wear debris sensor for in-line monitoring of industrial fluids. Lens-less microscopy, stroboscopic illumination, a CMOS imager and embedded machine vision technologies have been merged to develop a sensor solution that is able to detect and quantify the number and size of micrometric particles suspended in a continuous flow of a fluid...
March 14, 2017: Sensors
https://www.readbyqxmd.com/read/28333783/dome-shaped-macula-in-myopic-eyes-twelve-month-follow-up
#10
Daniel Lorenzo, Luis Arias, Netan Choudhry, Eduard Millan, Ignacio Flores, Marcos J Rubio, Estefanía Cobos, Pere García-Bru, Alejandro Filloy, Josep M Caminal
PURPOSE: To study the long-term clinical course of dome-shaped macula in myopic eyes and to evaluate treatment efficacy for subretinal fluid (SRF) as a related complication. METHODS: A retrospective, single-center consecutive case series study was conducted. The authors analyzed myopic eyes with dome-shaped macula in patients who presented for evaluation of decreased vision. Dome-shaped macula was defined as a convexity of the retina-choroidal macular complex seen on spectral domain optical coherence tomography images...
April 2017: Retina
https://www.readbyqxmd.com/read/28329377/time-to-refocus-assessment-of-vision-in-older-adults-contrast-sensitivity-but-not-visual-acuity-is-associated-with-gait-in-older-adults
#11
Eoin Duggan, Orna Donoghue, Rose Anne Kenny, Hilary Cronin, James Loughman, Ciarán Finucane
Background: The relationship between measures of visual function and gait related risk factors for falls is unclear. In this study, we examine the relationship between visual function (visual acuity [VA] and contrast sensitivity [CS] at multiple spatial frequencies) and quantitative spatiotemporal gait, using a large, nationally representative sample of community dwelling older adults. Methods: Participants aged 50 and over were recruited as part of The Irish Longitudinal Study on Ageing (TILDA)...
February 28, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28328817/retrospective-analysis-of-the-overt-proteinuria-diabetic-kidney-disease-in-the-treatment-of-modified-shenzhuo-formula-for-2-years
#12
Hongdong Chen, Jing Guo, Xuemin Zhao, Xinhui He, Zhongchen He, Linhua Zhao, Xiaolin Tong
The objective of the present study was to evaluate the 2-year effectiveness of modified Shenzhuo formula in the treatment of overt proteinuria diabetic kidney disease (DKD).Patients diagnosed with type 2 DKD in the clinical research database of Prof Xiaolin Tong (>20,000 data points) with >1-year follow-up were screened for this study. Patients' demographic data, chief complaint, present illness, past history, allergic history, personal history, family history, test results, tongue images, pulse information, and prescription information at 1, 1...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28326859/performance-evaluation-of-3d-vision-based-semi-autonomous-control-method-for-assistive-robotic-manipulator
#13
Hyun W Ka, Cheng-Shiu Chung, Dan Ding, Khara James, Rory Cooper
We developed a 3D vision-based semi-autonomous control interface for assistive robotic manipulators. It was implemented based on one of the most popular commercially available assistive robotic manipulator combined with a low-cost depth-sensing camera mounted on the robot base. To perform a manipulation task with the 3D vision-based semi-autonomous control interface, a user starts operating with a manual control method available to him/her. When detecting objects within a set range, the control interface automatically stops the robot, and provides the user with possible manipulation options through audible text output, based on the detected object characteristics...
March 22, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28324012/deletion-of-the-thyroid-hormone-activating-type-2-deiodinase-rescues-cone-photoreceptor-degeneration-but-not-deafness-in-mice-lacking-type-3-deiodinase
#14
Lily Ng, Hong Liu, Donald L St Germain, Arturo Hernandez, Douglas Forrest
Type 2 deiodinase amplifies and type 3 deiodinase depletes levels of the active form of thyroid hormone, triiodothyronine (T3). Given the opposing activities of these enzymes, we tested the hypothesis that they counteract each other's developmental functions by investigating whether deletion of type 2 deiodinase (encoded by Dio2) modifies sensory phenotypes in type 3 deiodinase-deficient (Dio3-/-) mice. Dio3-/- mice display degeneration of retinal cones, the photoreceptors that mediate daylight and color vision...
March 7, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323489/incidence-rates-and-risk-factors-for-vision-loss-among-aids-related-cytomegalovirus-retinitis-patients-in-southern-thailand
#15
Wantanee Sittivarakul, Usanee Seepongphun
PURPOSE: To describe the incidence of and risk factors for visual acuity (VA) loss in patients with AIDS and cytomegalovirus (CMV) retinitis. METHODS: A total of 132 patients were included. The main outcome measurements were the incidences of VA loss to ≤20/50 and ≤20/200. RESULTS: The incidences of VA loss to ≤20/50 and ≤20/200 were 0.22/eye-year (EY) and 0.12/EY, respectively. Risk factors for the incidence of VA loss to ≤20/50 were low nadir CD4(+) T-cell count (adjusted hazard ratio [aHR], 3...
March 21, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28322323/anti-inflammatory-properties-of-shikonin-contribute-to-improved-early-stage-diabetic-retinopathy
#16
Po-Lin Liao, Cheng-Hui Lin, Ching-Hao Li, Chi-Hao Tsai, Jau-Der Ho, George C Y Chiou, Jaw-Jou Kang, Yu-Wen Cheng
Diabetic retinopathy (DR), a major microvascular complication of diabetes, leads to retinal vascular leakage, neuronal dysfunction, and apoptosis within the retina. In this study, we combined STZ with whole-body hypoxia (10% O2) for quicker induction of early-stage retinopathy in C57BL/6 mice. We also compared the effects of a high glucose condition combined with hypoxia (1% O2) to a low glucose condition by using retinal pigment epithelial (RPE) cells, which are a crucial component of the outer blood-retinal barrier and the damage is related to retinopathy...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321887/simplification-of-visual-rendering-in-simulated-prosthetic-vision-facilitates-navigation
#17
Victor Vergnieux, Marc J-M Macé, Christophe Jouffrais
Visual neuroprostheses are still limited and simulated prosthetic vision (SPV) is used to evaluate potential and forthcoming functionality of these implants. SPV has been used to evaluate the minimum requirement on visual neuroprosthetic characteristics to restore various functions such as reading, objects and face recognition, object grasping, etc. Some of these studies focused on obstacle avoidance but only a few investigated orientation or navigation abilities with prosthetic vision. The resolution of current arrays of electrodes is not sufficient to allow navigation tasks without additional processing of the visual input...
March 21, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28318725/-comparison-of-refraction-with-or-without-cycloplegia-using-retinomax-%C3%A2-or-plusoptix-%C3%A2-devices
#18
E Bui Quoc, S Guilmin Crepon, S Tinguely, G Lavallee, G Busquet, M Angot, L Vera
PURPOSE: To evaluate the refraction in children measured with Plusoptix(®) without cycloplegia vs. Retinomax(®) apparatus with cycloplegia. PATIENTS AND METHODS: Measure of refraction with Plusoptix(®) in children>1year old referred for systematic vision screening, then measurement after cycloplegia with cyclopentolate by the Retinomax(®) device. RESULTS: Thirty-three children were included, i.e. 66eyes. Mean age was 40.7months (minimum 12; maximum 114)...
March 16, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28316882/sympathy-for-the-devil-a-conservation-strategy-for-devil-and-manta-rays
#19
Julia M Lawson, Sonja V Fordham, Mary P O'Malley, Lindsay N K Davidson, Rachel H L Walls, Michelle R Heupel, Guy Stevens, Daniel Fernando, Ania Budziak, Colin A Simpfendorfer, Isabel Ender, Malcolm P Francis, Giuseppe Notarbartolo di Sciara, Nicholas K Dulvy
BACKGROUND: International trade for luxury products, medicines, and tonics poses a threat to both terrestrial and marine wildlife. The demand for and consumption of gill plates (known as Peng Yu Sai, "Fish Gill of Mobulid Ray") from devil and manta rays (subfamily Mobulinae, collectively referred to as mobulids) poses a significant threat to these marine fishes because of their extremely low productivity. The demand for these gill plates has driven an international trade supplied by largely unmonitored and unregulated catches from target and incidental fisheries around the world...
2017: PeerJ
https://www.readbyqxmd.com/read/28316563/a-saccade-based-framework-for-real-time-motion-segmentation-using-event-based-vision-sensors
#20
Abhishek Mishra, Rohan Ghosh, Jose C Principe, Nitish V Thakor, Sunil L Kukreja
Motion segmentation is a critical pre-processing step for autonomous robotic systems to facilitate tracking of moving objects in cluttered environments. Event based sensors are low power analog devices that represent a scene by means of asynchronous information updates of only the dynamic details at high temporal resolution and, hence, require significantly less calculations. However, motion segmentation using spatiotemporal data is a challenging task due to data asynchrony. Prior approaches for object tracking using neuromorphic sensors perform well while the sensor is static or a known model of the object to be followed is available...
2017: Frontiers in Neuroscience
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