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https://www.readbyqxmd.com/read/27932223/relationship-between-psychophysical-measures-of-retinal-ganglion-cell-density%C3%A2-and-in%C3%A2-vivo-measures-of-cone-density%C3%A2-in-glaucoma
#1
Juliane Matlach, Pádraig J Mulholland, Marketa Cilkova, Reena Chopra, Nilpa Shah, Tony Redmond, Steven C Dakin, David F Garway-Heath, Roger S Anderson
PURPOSE: Considerable between-individual variation in retinal ganglion cell (RGC) density exists in healthy individuals, making identification of change from normal to glaucoma difficult. In ascertaining local cone-to-RGC density ratios in healthy individuals, we wished to investigate the usefulness of objective cone density estimates as a surrogate of baseline RGC density in glaucoma patients, and thus a more efficient way of identifying early changes. DESIGN: Exploratory cohort study...
December 5, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27877015/rainbow-glare-after-laser-assisted-in-situ-keratomileusis-a-review-of-literature
#2
REVIEW
Majid Moshirfar, Jordan D Desautels, Tyler S Quist, David F Skanchy, Mark T Williams, Ryan T Wallace
This article reviews the current literature pertaining to rainbow glare (RG), including incidence rate, clinical presentation, etiology, prognosis, and management. RG is a rare optical complication of femtosecond laser-assisted in situ keratomileusis that results in patients seeing an array of spectral bands surrounding point sources of light under mesopic and scotopic conditions. The mechanism is thought to be a consequence of the formation of a transmissive diffraction grating on the posterior surface of the corneal flap created by the FS laser...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27857353/lens-gratings-for-dose-optimization-of-medical-x-ray-phase-contrast-imaging
#3
Oliver Preusche
A novel way to build arrays of X-ray lenslets is proposed for use in medical imaging, in particular for X-ray phase contrast imaging. Focusing on Talbot-Lau interferometers, this work is about patient dose reduction, especially for design energies above 50 keV. A low dose poses a fabrication problem, because it requires an analyzer grating which is both fine and high: It has to be fine for a good angular sensitivity. It has to be high to absorb well. However, gratings can currently be built either fine or high...
November 14, 2016: Optics Express
https://www.readbyqxmd.com/read/27767987/impaired-center-surround-suppression-in%C3%A2-patients-with-alzheimer-s-disease
#4
Xianbo Zhuang, Yanxiu Chen, Xianpeng Zhuang, Tao Xing, Tuanzhi Chen, Guisheng Jiang, Xiafeng Yang
Alzheimer's disease (AD) is often associated with declined visual processing abilities. Here we tested whether the functions of center-surround suppression- a hallmark property in the visual system- are altered by AD. To this end, we recruited three groups of participants (AD, elderly, and young) in a motion direction discrimination task, in which we measured the temporal duration threshold of a  drifting Gabor with varying stimulus sizes. We first replicated the phenomena of center-surround suppression that the required duration for discriminating a high contrast grating decreases with increasing stimulus size...
October 19, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27762611/gift-giving-in-the-podiatric-medical-student-patient-relationship
#5
Daniel López López, Paula Torreiro Pazo, Marta E Losa Iglesias, Ricardo Becerro de Bengoa Vallejo
We sought to explore the relationship between the podiatric medical student and the patient as it relates to the act of gift-giving as a sign of gratefulness for the services provided. This article presents the clinical case of a man who visited a podiatric medical student because of pain in his feet and subsequently presented the student with several gifts. Philanthropy, empathy, a positive attitude, treatment instructions, and the time devoted to the patient are some of the reasons why patients offer gifts to podiatric medical students...
September 2, 2016: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/27731957/a-wolf-in-sheep-s-clothing-patients-and-healthcare-professionals-perceptions-of-oxygen-therapy-an-interpretative-phenomenological-analysis
#6
Carol A Kelly, Dave Lynes, Mary R O'Brien, Ben Shaw
BACKGROUND: Despite emerging evidence and guidelines, poor prescribing and administration of oxygen therapy persists. This study aimed to explore healthcare professionals' (HCPs) and patients' perceptions of oxygen. DESIGN: Semi-structured interviews with 28 patients and 34 HCPs. FINDINGS: Three master themes uncovered: oxygen as a panacea, the burden of oxygen and antecedents to beliefs. Patients used oxygen for breathlessness and as an enabler; they were grateful to oxygen and accepted it as part of the disease...
October 12, 2016: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/27562279/-application-of-disparity-discriminating-accuracy-test-in-evaluating-the-stereopsis-of-postoperative-intermittent-exotropia
#7
L X Feng, J Y Yao, L Chen, Y Tang, F Hou
OBJECTIVE: To discuss the application of disparity discriminating accuracy test in evaluating the stereopsis of postoperative intermittent exotropia. METHODS: Patients with intermittent exotropia who underwent surgery during July 2011 to June 2013 were followed up. The stereoacuity was examined by Titmus Stereotest, Randot Stereotest and Frisby Stereotest. Twenty adult cases whose stereoacuity reached normal were chosen as experimental group. Twenty healthy adults were selected as normal control group...
August 2016: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/27489853/psychosocial-outcomes-of-sharing-a-diagnosis-of-cancer-with-a-pediatric-patient
#8
Haya Raz, Nili Tabak, Shulamith Kreitler
PURPOSE: This innovative pilot study was designed to provide research-based evidence on the variables to consider informing a child of his/her cancer diagnosis, so as to minimize the negative psychosocial effects of the cancer experience on survivors. The hypotheses of the study were that "good information" about cancer, will allow the child a better understanding way to cope with treatment and improve sociopsychological outcomes at adulthood. METHODS: Ninety-one adult childhood cancer (CC) survivors got the questionnaires while waiting to their routine checkup at a grate CC medical center in center Israel...
2016: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/27428821/a-grateful-but-not-passive-patient
#9
Erik Rifkin, Andy Lazris
No abstract text is available yet for this article.
September 1, 2016: JAMA Internal Medicine
https://www.readbyqxmd.com/read/27407061/altered-recovery-from-inhibitory-repetitive-transcranial-magnetic-stimulation-rtms-in-subjects-with-photosensitive-epilepsy
#10
Tommaso Bocci, Matteo Caleo, Laura Restani, Davide Barloscio, Simone Rossi, Ferdinando Sartucci
OBJECTIVE: To investigate functional changes underlying photosensitivity, we studied the response of the visual cortex to low-frequency, inhibitory repetitive transcranial magnetic stimulation (rTMS) in drug-free patients with photosensitive seizures and healthy volunteers. METHODS: Visual evoked potentials (VEPs) triggered by grating stimuli of different contrasts were recorded in both hemispheres before and after transient functional inactivation of the occipital cortex of one side via low-frequency rTMS (0...
October 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27401203/when-accepting-a-gift-can-be-professional-misconduct-and-theft
#11
Richard Griffith
Gifts are often given as tokens of gratitude by grateful patients to district nurses. However, there are circumstances where the Nursing and Midwifery Council (NMC), as the professional regulator, and the courts, have held that accepting gifts, large or small, from vulnerable adults is dishonest and amounts to professional misconduct and even theft. Richard Griffith discusses the circumstances where a district nurse who accepts a gift can face a fitness-to-practise investigation and an allegation of theft.
July 2016: British Journal of Community Nursing
https://www.readbyqxmd.com/read/27389374/what-is-the-future-of-healthcare-in-the-united-states
#12
Margaret Coleman Maxi
Reports of rising costs, aging populations, budget cuts, and physician burnout can be distressing for medical professionals. Politicians tout polarizing viewpoints about how to address healthcare inequalities and improve outcomes. Litigation and insurance companies seem to have an increasing-and for some-unwelcome presence in patient care. However, it is also exciting that our society today so highly values healthcare that it is a topic of heated debate. When many news outlets focus on trivial pop culture news, it is refreshing that our peers and politicians spend their time seeking to improve a system that so deeply affects our lives...
May 2016: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/27386927/do-we-need-a-new-classification-of-parotid-gland-surgery
#13
Małgorzata Wierzbicka, Krzysztof Piwowarczyk, Hanna Nogala, Marzena Błaszczyńska, Michał Kosiedrowski, Cezary Mazurek
BACKGROUND: In February 2016 the European Salivary Gland Society (ESGS) presented and recommended classification of parotidectomies based on the anatomical I-V level division of parotid gland. The main goal of this paper is to present the new classification, and to answer the question if it is more precise compared to classic one. MATERIAL AND METHOD: 607 patients (315 man, 292 women) operated on for parotid tumours in a tertiary referral centre, Department of Otolaryngology, Head and Neck Surgery, Medical University of Poznań (502 benign and 105 malignant tumours)...
June 30, 2016: Otolaryngologia Polska. the Polish Otolaryngology
https://www.readbyqxmd.com/read/27349815/meg-measured-visually-induced-gamma-band-oscillations-in-chronic-schizophrenia-evidence-for-impaired-generation-of-rhythmic-activity-in-ventral-stream-regions
#14
Tineke Grent-'t-Jong, Davide Rivolta, Andreas Sauer, Michael Grube, Wolf Singer, Michael Wibral, Peter J Uhlhaas
BACKGROUND: Gamma-band oscillations are prominently impaired in schizophrenia, but the nature of the deficit and relationship to perceptual processes is unclear. METHODS: 16 patients with chronic schizophrenia (ScZ) and 16 age-matched healthy controls completed a visual paradigm while magnetoencephalographic (MEG) data was recorded. Participants had to detect randomly occurring stimulus acceleration while viewing a concentric moving grating. MEG data were analyzed for spectral power (1-100Hz) at sensor- and source-level to examine the brain regions involved in aberrant rhythmic activity, and for contribution of differences in baseline activity towards the generation of low- and high-frequency power...
October 2016: Schizophrenia Research
https://www.readbyqxmd.com/read/27332498/front-matter
#15
(no author information available yet)
On behalf of the Scientific Program Committee, I extend a warm welcome to the IMIA-NI members, students, practitioners, informatics researchers, industry partners, and others interested in health and nursing informatics who have come to attend the NI 2016, 13th International Congress on Nursing Informatics. NI 2016 is a biennial conference of the IMIA-NI and the leading scientific meeting for health and nursing informatics research and practice. NI 2016 presents work not only from the discipline of nursing but also from many other disciplines and specialties including both basic and applied informatics...
2016: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/27311380/response-to-vascular-emergencies-and-shared-decision-making-in-patients-with-thunderclap-headache
#16
Ajay Malhotra, Xiao Wu, Howard P Forman, John H Burton
We are grateful for the opportunity to expand the discussion and respond to the comments expressed. The purpose for the economic modelling in our study was not to calculate absolute costs and utilities, but to highlight the key factors involved in the decision-making process in managing patients with thunderclap headache, including the prevalence of SAH, sensitivity of noncontrast CT (which may vary depending on time of scan since onset) and the incidence of SAH caused by aneurysms. Management strategies may have to be tailored accordingly, and the knowledge of how these factors influence the conclusions can help the treating physicians with decision-making and discussions with the patients...
June 17, 2016: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/27309625/developing-an-outcome-measure-with-high-luminance-for-optogenetics-treatment-of-severe-retinal-degenerations-and-for-gene-therapy-of-cone-diseases
#17
Artur V Cideciyan, Alejandro J Roman, Samuel G Jacobson, Boyuan Yan, Michele Pascolini, Jason Charng, Simone Pajaro, Sheila Nirenberg
PURPOSE: To present stimuli with varied sizes, colors, and patterns over a large range of luminance. METHODS: The filter bar used in scotopic MP1 was replaced with a custom slide-in tray that introduces light from an external projector driven by an additional computer. MP1 software was modified to provide retinal tracking information to the computer driving the projector. Retinal tracking performance was evaluated by imaging the system input and the output simultaneously with a high-speed video system...
June 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27279739/oral-supplementation-with-a-nutraceutical-formulation-containing-omega-3-fatty-acids-vitamins-minerals-and-antioxidants-in-a-large-series-of-patients-with-dry-eye-symptoms-results-of-a-prospective-study
#18
Jordi Gatell-Tortajada
PURPOSE: To assess the benefits and tolerability of a dietary supplement based on omega-3 fatty acids to relieve dry eye symptoms. METHODS: A total of 1,419 patients (74.3% women, mean age 58.9 years) with dry eye syndrome using artificial tears participated in a 12-week prospective study. Patients were instructed to take 3 capsules/day of the nutraceutical formulation (Brudysec(®) 1.5 g). Study variables were dry eye symptoms (scratchy and stinging sensation, eye redness, grittiness, painful and tired eyes, grating sensation, and blurry vision), conjunctival hyperemia, tear breakup time (TBUT), Schrimer I test, and Oxford grading scheme...
2016: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/27255822/perception-related-eeg-is-more-sensitive-to-alzheimer-s-disease-effects-than-resting-eeg
#19
Elham Barzegaran, Bart van Damme, Reto Meuli, Maria G Knyazeva
To characterize the effects of Alzheimer's disease (AD) on cortical functional connectivity in perception, we analyzed interhemispheric lagged synchronization (ILS) in the source space of high-density EEG recorded in aged controls and patients with amnestic mild cognitive impairment (aMCI) or AD while they viewed collinear and noncollinear bilateral moving gratings. Beta-band ILS was lower in aMCI and AD compared with controls in a large region centered on BA39. As previously reported, in young adults, collinear iso-oriented gratings versus noncollinear gratings synchronizes EEG reflecting perceptual grouping...
July 2016: Neurobiology of Aging
https://www.readbyqxmd.com/read/27232213/a-potential-vep-biomarker-for-mild-cognitive-impairment-evidence-from-selective-visual-deficit-of-higher-level-dorsal-pathway
#20
Takao Yamasaki, Shizuka Horie, Yasumasa Ohyagi, Eri Tanaka, Norimichi Nakamura, Yoshinobu Goto, Shigenobu Kanba, Jun-Ichi Kira, Shozo Tobimatsu
Visual dysfunctions are common in Alzheimer's disease (AD). Our aim was to establish a neurophysiological biomarker for amnestic mild cognitive impairment (aMCI). Visual evoked potentials (VEPs) were recorded in aMCI patients who later developed AD (n = 15) and in healthy older (n = 15) and younger controls (n = 15). Visual stimuli were optimized to separately activate lower and higher levels of the ventral and dorsal streams. We compared VEP parameters across the three groups of participants and conducted a linear correlation analysis between VEPs and data from neuropsychological tests...
May 23, 2016: Journal of Alzheimer's Disease: JAD
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