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https://www.readbyqxmd.com/read/28731053/oct-angiography-documented-reperfusion-of-translocated-autologous-full-thickness-rpe-choroid-graft-for-complicated-neovascular-age-related-macular-degeneration
#1
M Veckeneer, C Augustinus, E Feron, P-P Schauwvlieghe, J Ruys, I Cosemans, J Van Meurs
PurposeThe purpose of this study is to investigate the reperfusion of translocated retinal pigment epithelium (RPE)-choroid graft in the treatment of patients with neovascular age-related macular degeneration (nAMD), using OCT angiography (OCTA), a novel non-invasive, high-resolution imaging modality.Patients and methodsEighteen eyes of 18 consecutive patients suffering from complicated nAMD underwent RPE-choroid patch graft translocation surgery using a peripheral retinotomy and flap-over technique. We analyzed functional and anatomical outcome using visual acuity, Spectral Domain OCT and OCTA...
July 21, 2017: Eye
https://www.readbyqxmd.com/read/28730900/falls-prevention-interventions-for-older-adults-with-low-vision-a-scoping-review-%C3%A3-tude-de-port%C3%A3-e-sur-les-interventions-visant-%C3%A3-pr%C3%A3-venir-les-chutes-chez-les-a%C3%A3-n%C3%A3-s-ayant-une-basse-vision
#2
Sarah E Blaylock, Laura K Vogtle
BACKGROUND: Older adults with low vision are especially vulnerable to falls. There are no comprehensive reviews of fall prevention interventions for older adults with vision loss who live in the community. PURPOSE: The aim of this study was to review the evidence regarding community-based falls prevention interventions that appear inclusive of and/or accessible to individuals with low vision. METHOD: A scoping review was completed using the framework developed by Arksey and O'Malley, and the charted data were analyzed using sums and percentages and qualitative content analysis...
June 2017: Canadian Journal of Occupational Therapy. Revue Canadienne D'ergothérapie
https://www.readbyqxmd.com/read/28730121/age-norms-for-grating-acuity-and-contrast-sensitivity-measured-by-lea-tests-in-the-first-three-years-of-life
#3
Amal A Elgohary, Manal H Abuelela, Adel Alei Eldin
AIM: To determine age norms in the first three years of life for grating visual acuity and contrast sensitivity obtained with Lea grating test and Hiding Heidi low contrast face test. METHODS: Lea grating test was used to estimate binocular grating acuity and Hiding Heidi low contrast face test was used to estimate contrast sensitivity in 600 healthy infants and children. Age ranged from 3 to 36mo subdivided into 12 groups subjected for full ophthalmologic and pediatric examinations...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728283/-epidemiological-survey-of-visual-impairment-in-funing-county-jiangsu
#4
M Yang, J F Zhang, R R Zhu, L H Kang, B Qin, H J Guan
Objective: To investigate the prevalence of visual impairment and factors associated with visual impairment among people aged 50 years and above in Funing County, Jiangsu Province. Methods: Cross-sectional study. Random cluster sampling was used in selecting individuals aged ≥50 years in 30 clusters, and 5 947 individuals received visual acuity testing and eye examination. Stata 13.0 software was used to analyze the data. Multivariate logistic regression was used to detect possible factors of visual impairment such as age, gender and education...
July 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728172/blur-adaptation-to-central-retinal-disease
#5
Fuensanta A Vera-Diaz, Russell L Woods, Eli Peli
Purpose: The long-term, low-resolution vision experienced by individuals affected by retinal disease that causes central vision loss (CVL) may change their perception of blur through adaptation. This study used a short-term adaptation paradigm to evaluate adaptation to blur and sharpness in patients with CVL. Methods: A variation of Webster's procedure was used to measure the point of subjective neutrality (PSN). The image that appeared normal after adaptation to each of seven blur and sharpness levels (PSN) was measured in 12 patients with CVL (20/60 to 20/320) and 5 subjects with normal sight (NS)...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28728043/autofocus-on-moving-object-in-scanning-electron-microscope
#6
Andrey V Kudryavtsev, Sounkalo Dembélé, Nadine Piat
The sharpness of the images coming from a Scanning Electron Microscope (SEM) is a very important property for many computer vision applications at micro- and nanoscale. It represents how much object details are distinctive in the images: the object may be perceived sharp or blurred. Image sharpness highly depends on the value of focal distance, or working distance in the case of the SEM. Autofocus is the technique allowing to automatically adjust the working distance to maximize the sharpness. Most of the existing algorithms allows working only with a static object which is enough for the tasks of visualization, manual microanalysis or microcharacterization...
July 12, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28724696/is-leukostasis-a-crucial-step-or-epiphenomenon-in-the-pathogenesis-of-diabetic-retinopathy
#7
REVIEW
Anne-Eva van der Wijk, John M Hughes, Ingeborg Klaassen, Cornelis J F Van Noorden, Reinier O Schlingemann
Leukostasis in the retinal microvasculature in animal model studies of diabetes is associated with the development of diabetes-like retinopathy. Therefore, it is generally assumed that adhesion of leukocytes is a central event inciting a chronic, low-grade form of inflammation that causes the vascular abnormalities that are specific for the early stages of diabetic retinopathy (DR), which culminate in diabetic macular edema, proliferative DR, and vision loss in humans. Here, we review the literature critically with respect to leukostasis and assess its pathologic consequences in the human diabetic retina...
July 19, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28720881/patients-with-orthostatic-intolerance-relationship-to-autonomic-function-tests-results-and-reproducibility-of-symptoms-on-tilt
#8
Hyung Lee, Phillip A Low, Hyun Ah Kim
This study was designed to investigate the frequency and pattern of orthostatic symptoms during head-up tilt (HUT) in patients with orthostatic intolerance during daily life, and to identify the relationship between the orthostatic symptoms during HUT and autonomic parameters. We prospectively collected autonomic data from 464 patients with orthostatic symptoms. Adrenergic and cardiovagal function tests including HUT were performed. Based on HUT results, we divided patients into orthostatic hypotension (OH), postural tachycardia syndrome (POTS), or normal HUT groups...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28718747/the-role-of-temporal-disparity-on-audiovisual-integration-in-low-vision-individuals
#9
Stefano Targher, Rocco Micciolo, Valeria Occelli, Massimiliano Zampini
Recent findings have shown that sounds improve visual detection in low vision individuals when the audiovisual stimuli pairs of stimuli are presented simultaneously and from the same spatial position. The present study purports to investigate the temporal aspects of the audiovisual enhancement effect previously reported. Low vision participants were asked to detect the presence of a visual stimulus (yes/no task) presented either alone or together with an auditory stimulus at different stimulus onset asynchronies (SOAs)...
January 1, 2017: Perception
https://www.readbyqxmd.com/read/28718041/quality-of-vision-patient-satisfaction-and-long-term-visual-function-after-bilateral-implantation-of-a-low-addition-multifocal-intraocular-lens
#10
Emilio Pedrotti, Rodolfo Mastropasqua, Jacopo Bonetto, Christian Demasi, Francesco Aiello, Carlo Nucci, Cesare Mariotti, Giorgio Marchini
PURPOSE: The aim of the current study was to compare the quality of vision, contrast sensitivity and patient satisfaction with a biaspheric, segmented, rotationally asymmetric IOL (Lentis Comfort LS-313 MF 15-Oculentis GmbH, Berlin, Germany) as opposed to those of a monofocal IOL. METHODS: This prospective single-blind comparative study included two groups of patients affected by bilateral senile cataract who underwent lens extraction and IOL implantation. The first group received a bilateral implantation of a monofocal IOL, and the second group received a bilateral implantation of the Comfort IOL...
July 17, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28712567/perceived-object-trajectory-is-influenced-by-others-tracking-movements
#11
Colin J Palmer, Colin W G Clifford
In social interactions, it is highly salient to us where other people are looking. The ability to recover this information is critical to typical social development, helping us to coordinate our attention and behavior with others and understand their intentions and mental states [1-3]. The depth and direction in which another individual is fixating are specified jointly by their head position, eye deviation, and binocular vergence [4, 5]. It is hereto unknown, however, whether this dynamic visual information about others' focus of attention affects how we ourselves see the world...
July 8, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28707441/the-importance-of-vision
#12
EDITORIAL
Timothy D Henry, Christopher R Henry
Based on a systematic review and meta-analysis of 8 studies, involving 2,559 subjects, both interventional cardiologists (3.21) and cardiac cath lab staff (2.76) had a significantly higher relative risk of posterior lens opacity than the control group. It is essential to provide "best practice" in radiation dose management and lead shielding in the cath lab with the standard "As Low As Reasonably Achievable"! There is a clear need for better data to quantitate the radiation risk and to design innovative strategies to decrease that risk...
July 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28706770/open-globe-injury-with-an-interesting-intra-ocular-foreign-body
#13
Ekjyot Gill, Matthew Shulman, Sid Schechet, Lawson Grumbine
Introduction: Cases of penetrating ocular trauma due to osseous material are limited, so reported incidents are valuable in determining outcomes and proper treatment courses. Case description: We report a case of an open globe injury of the left eye with an intraocular foreign body occurring after a firework exploded in the hand of a 22-year-old man. The patient presented with light perception vision in the injured eye with a full-thickness limbal laceration and dense hyphema obscuring fundoscopy. CT scan revealed a hyperdense foreign body juxtaposed to the lens...
2017: GMS Ophthalmology Cases
https://www.readbyqxmd.com/read/28706737/the-prevalence-of-visual-acuity-impairment-among-school-children-at-arada-subcity-primary-schools-in-addis-ababa-ethiopia
#14
Haile Fentahun Darge, Getahun Shibru, Abiy Mulugeta, Yinebeb Mezgebu Dagnachew
BACKGROUND: Visual impairment and blindness are major public health problems in developing countries where there is no enough health-care service. OBJECTIVE: To determine the prevalence of visual impairment among school children. MATERIALS AND METHODS: A school-based cross-sectional study was conducted between 15 June 2015 and 30 November 2015 at Arada subcity primary schools, Addis Ababa, Ethiopia. Two schools were selected randomly, and 378 students were screened from grades 1 to 8 using systematic random sampling method...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28705460/global-hearing-health-care-new-findings-and-perspectives
#15
REVIEW
Blake S Wilson, Debara L Tucci, Michael H Merson, Gerard M O'Donoghue
In 2015, approximately half a billion people had disabling hearing loss, about 6·8% of the world's population. These numbers are substantially higher than estimates published before 2013, and point to the growing importance of hearing loss and global hearing health care. In this Review, we describe the burden of hearing loss and offer our and others' recommendations for halting and then reversing the continuing increases in this burden. Low-cost possibilities exist for prevention of hearing loss, as do unprecedented opportunities to reduce the generally high treatment costs...
July 10, 2017: Lancet
https://www.readbyqxmd.com/read/28704206/an-autonomous-robot-inspired-by-insect-neurophysiology-pursues-moving-features-in-natural-environments
#16
Zahra M Bagheri, Benjamin S Cazzolato, Steven Grainger, David C O'Carroll, Steven D Wiederman
OBJECTIVE: Many computer vision and robotic applications require the implementation of robust and efficient target-tracking algorithms on a moving platform. However, deployment of a real-time system is challenging, even with the computational power of modern hardware. Lightweight and low-powered flying insects, such as dragonflies, track prey or conspecifics within cluttered natural environments, illustrating an efficient biological solution to the target-tracking problem. APPROACH: We used our recent recordings from 'small target motion detector' neurons in the dragonfly brain to inspire the development of a closed-loop target detection and tracking algorithm...
July 13, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28701559/optimal-background-matching-camouflage
#17
Constantine Michalis, Nicholas E Scott-Samuel, David P Gibson, Innes C Cuthill
Background matching is the most familiar and widespread camouflage strategy: avoiding detection by having a similar colour and pattern to the background. Optimizing background matching is straightforward in a homogeneous environment, or when the habitat has very distinct sub-types and there is divergent selection leading to polymorphism. However, most backgrounds have continuous variation in colour and texture, so what is the best solution? Not all samples of the background are likely to be equally inconspicuous, and laboratory experiments on birds and humans support this view...
July 12, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28700811/probing-for-congenital-nasolacrimal-duct-obstruction
#18
REVIEW
Carisa Petris, Don Liu
BACKGROUND: Congenital nasolacrimal duct obstruction (NLDO) is a common condition causing excessive tearing in the first year of life. Infants present with excessive tearing or mucoid discharge from the eyes due to blockage of the nasolacrimal duct system, which can result in maceration of the skin of the eyelids and local infections, such as conjunctivitis, that may require antibiotics. The incidence of nasolacrimal duct obstruction in early childhood ranges from 5% to 20% and often resolves without surgery...
July 12, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28700742/direct-medical-cost-associated-with-diabetic-retinopathy-severity-in-type-2-diabetes-in-singapore
#19
Xiao Zhang, Serena Low, Neelam Kumari, Jiexun Wang, Keven Ang, Darren Yeo, Chee Chew Yip, Subramaniam Tavintharan, Chee Fang Sum, Su Chi Lim
Diabetic retinopathy (DR) is a leading cause of vision-loss globally among type 2 diabetes (T2DM) patients. Information on the economic burden of DR in Singapore is limited. We aim to identify the total annual direct medical costs of DR at different stages, and to examine factors influencing the costs. Four hundreds and seventy T2DM patients who attended the Diabetes Centre in a secondary hospital in Singapore in 2011-2014 were included. Digital color fundus photographs were assessed for DR in a masked fashion...
2017: PloS One
https://www.readbyqxmd.com/read/28694824/burden-and-correlates-of-falls-among-rural-elders-of-south-india-mobility-and-independent-living-in-elders-study
#20
Pawan Kumar Sharma, Clareann H Bunker, Tushar Singh, Enakshi Ganguly, P Sudhakar Reddy, Anne B Newman, Jane A Cauley
AIM: Falls are an important contributor to loss of function, morbidity, and mortality in elders. Little is known about falls in Indian populations. The objective of this cross-sectional report was to identify the prevalence and correlates of falls in a cohort of 562 rural southern Indian men and women. METHODS: Risk factors included demographics, anthropometrics, self-reported health, medical history, physical function, vision, depression, and lifestyle. Odds ratios were calculated using logistic regression...
2017: Current Gerontology and Geriatrics Research
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