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Effects Of Reading Glasses

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https://www.readbyqxmd.com/read/27899319/cost-effective-raspberry-pi-based-radio-frequency-identification-tagging-of-mice-suitable-for-automated-in-vivo-imaging
#1
Federico Bolaños, Jeff M LeDue, Timothy H Murphy
BACKGROUND: Automation of animal experimentation improves consistency, reduces potential for error while decreasing animal stress and increasing well-being. Radio frequency identification (RFID) tagging can identify individual mice in group housing environments enabling animal-specific tracking of physiological parameters. NEW METHOD: We describe a simple protocol to radio frequency identification (RFID) tag and detect mice. RFID tags were injected sub-cutaneously after brief isoflurane anesthesia and do not require surgical steps such as suturing or incisions...
November 26, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27846341/avoiding-monocular-artifacts-in-clinical-stereotests-presented-on-column-interleaved-digital-stereoscopic-displays
#2
Ignacio Serrano-Pedraza, Kathleen Vancleef, Jenny C A Read
New forms of stereoscopic 3-D technology offer vision scientists new opportunities for research, but also come with distinct problems. Here we consider autostereo displays where the two eyes' images are spatially interleaved in alternating columns of pixels and no glasses or special optics are required. Column-interleaved displays produce an excellent stereoscopic effect, but subtle changes in the angle of view can increase cross talk or even interchange the left and right eyes' images. This creates several challenges to the presentation of cyclopean stereograms (containing structure which is only detectable by binocular vision)...
November 1, 2016: Journal of Vision
https://www.readbyqxmd.com/read/27792471/respirable-size-selective-sampler-for-end-of-shift-quartz-measurement-development-and-performance
#3
Taekhee Lee, Larry Lee, Emanuele Cauda, Jon Hummer, Martin Harper
Aims of this study were to develop a respirable size-selective sampler for direct-on-filter (DoF) quartz measurement at the end-of-shift (EoS) using a portable Fourier transform infrared (FTIR) spectrometer and to determine its size-selective sampling performance. A new miniaturized sampler has been designed to have an effective particle deposition diameter close to the portable FTIR beam diameter (6-mm). The new sampler (named the EoS cyclone) was constructed using a 3 dimensional printer. The sampling efficiency of the EoS cyclone was determined using polydisperse glass sphere particles and a time-of-flight direct reading instrument...
October 28, 2016: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/27575289/visual-complaints-and-eye-problems-in-orchestral-musicians
#4
Henny Jm Beckers, Marina Aw van Kooten-Noordzij, Ronald Mpc de Crom, Jan Sag Schouten, Carroll Ab Webers
OBJECTIVE: To study visual complaints and eye diseases among professional and amateur orchestral musicians in the Netherlands. METHODS: In this observational study, members from professional and amateur symphony or wind orchestras were asked to complete a questionnaire collecting demographic data, musical, medical, and family history, and data on present visual complaints and/or eye diseases. Questions about playing in the orchestra were also asked. RESULTS: Data from 70 professionals and 48 amateurs showed that most musicians needed glasses or contact lenses for playing in the orchestra (61% of the professionals, 63% of the amateurs)...
September 2016: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/27527185/soil-water-content-sensor-response-to-organic-matter-content-under-laboratory-conditions
#5
Ali Fares, Ripendra Awal, Haimanote K Bayabil
Studies show that the performance of soil water content monitoring (SWCM) sensors is affected by soil physical and chemical properties. However, the effect of organic matter on SWCM sensor responses remains less understood. Therefore, the objectives of this study are to (i) assess the effect of organic matter on the accuracy and precision of SWCM sensors using a commercially available soil water content monitoring sensor; and (ii) account for the organic matter effect on the sensor's accuracy. Sand columns with seven rates of oven-dried sawdust (2%, 4%, 6%, 8%, 10%, 12% and 18% v/v, used as an organic matter amendment), thoroughly mixed with quartz sand, and a control without sawdust were prepared by packing quartz sand in two-liter glass containers...
2016: Sensors
https://www.readbyqxmd.com/read/27468282/highly-effective-inhibition-of-biofilm-formation-by-the-first-metagenome-derived-ai-2-quenching-enzyme
#6
Nancy Weiland-Bräuer, Martin J Kisch, Nicole Pinnow, Andreas Liese, Ruth A Schmitz
Bacterial cell-cell communication (quorum sensing, QS) represents a fundamental process crucial for biofilm formation, pathogenicity, and virulence allowing coordinated, concerted actions of bacteria depending on their cell density. With the widespread appearance of antibiotic-resistance of biofilms, there is an increasing need for novel strategies to control harmful biofilms. One attractive and most likely effective approach is to target bacterial communication systems for novel drug design in biotechnological and medical applications...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27386571/ultrasensitive-interferometric-on-chip-microscopy-of-transparent-objects
#7
Roland A Terborg, Josselin Pello, Ilaria Mannelli, Juan P Torres, Valerio Pruneri
Light microscopes can detect objects through several physical processes, such as scattering, absorption, and reflection. In transparent objects, these mechanisms are often too weak, and interference effects are more suitable to observe the tiny refractive index variations that produce phase shifts. We propose an on-chip microscope design that exploits birefringence in an unconventional geometry. It makes use of two sheared and quasi-overlapped illuminating beams experiencing relative phase shifts when going through the object, and a complementary metal-oxide-semiconductor image sensor array to record the resulting interference pattern...
June 2016: Science Advances
https://www.readbyqxmd.com/read/27351629/eye-movement-training-and-suggested-gaze-strategies-in-tunnel-vision-a-randomized-and-controlled-pilot-study
#8
Iliya V Ivanov, Manfred Mackeben, Annika Vollmer, Peter Martus, Nhung X Nguyen, Susanne Trauzettel-Klosinski
PURPOSE: Degenerative retinal diseases, especially retinitis pigmentosa (RP), lead to severe peripheral visual field loss (tunnel vision), which impairs mobility. The lack of peripheral information leads to fewer horizontal eye movements and, thus, diminished scanning in RP patients in a natural environment walking task. This randomized controlled study aimed to improve mobility and the dynamic visual field by applying a compensatory Exploratory Saccadic Training (EST). METHODS: Oculomotor responses during walking and avoiding obstacles in a controlled environment were studied before and after saccade or reading training in 25 RP patients...
2016: PloS One
https://www.readbyqxmd.com/read/27183002/the-impact-of-various-protective-tools-on-the-dose-reduction-in-the-eye-lens-in-an-interventional-cardiology-clinical-study
#9
J Domienik, A Bissinger, W Grabowicz, Ł Jankowski, R Kręcki, M Makowski, K Masiarek, M Plewka, A Lubiński, J Z Peruga
The aim of the study was to check, in clinical practice, the potential for the dose reduction of lead eyewear and a ceiling-suspended shield used to protect the eye lens of physicians working in interventional cardiology. To this end, for the lead eyewear, the dose reduction factors were derived to correct the readings from a dosimeter used routinely outside the glasses. Four types of lead eyewear with attached loose thermoluminescent dosimeters and EYE-D dosimeters were worn by physicians in two clinical centres, for two-month periods, during coronary angiography (CA), percutaneous coronary intervention (PCI), and pacemaker procedures...
June 2016: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/27166880/sequential-application-of-glass-coverslips-to-assess-the-compressive-stiffness-of-the-mouse-lens-strain-and-morphometric-analyses
#10
Catherine Cheng, David S Gokhin, Roberta B Nowak, Velia M Fowler
The eye lens is a transparent organ that refracts and focuses light to form a clear image on the retina. In humans, ciliary muscles contract to deform the lens, leading to an increase in the lens' optical power to focus on nearby objects, a process known as accommodation. Age-related changes in lens stiffness have been linked to presbyopia, a reduction in the lens' ability to accommodate, and, by extension, the need for reading glasses. Even though mouse lenses do not accommodate or develop presbyopia, mouse models can provide an invaluable genetic tool for understanding lens pathologies, and the accelerated aging observed in mice enables the study of age-related changes in the lens...
2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/26903521/the-acceptability-and-visual-impact-of-0-01-atropine-in-a-caucasian-population
#11
James Loughman, D I Flitcroft
BACKGROUND: Myopia is a condition of enormous public health concern, affecting up to 2.5 billion people worldwide. The most effective treatment to prevent myopia progression is atropine but at the cost of accommodative paresis and mydriasis, necessitating the use of bifocal glasses. Low-dose atropine (0.01%) has been found to be almost as effective with significantly reduced side effects. Since there are well-recognised differences in the effect of atropine between heavily pigmented Asian eyes and Caucasian eyes, this study aimed to determine the acceptability and tolerability of 0...
February 22, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/26894368/gafchromic-ebt3-film-dosimetry-in-electron-beams-energy-dependence-and-improved-film-read-out
#12
Petri Sipilä, Jarkko Ojala, Sampsa Kaijaluoto, Ilkka Jokelainen, Antti Kosunen
For megavoltage photon radiation, the fundamental dosimetry characteristics of Gafchromic EBT3 film were determined in 60Co gamma ray beam with addition of experimental and Monte Carlo (MC)-simulated energy dependence of the film for 6 MV photon beam and 6 MeV, 9 MeV, 12 MeV, and 16 MeV electron beams in water phantom. For the film read-out, two phase correction of scanner sensitivity was applied: a matrix correction for scanning area and dose-dependent correction by iterative procedure. With these corrections, the uniformity of response can be improved to be within ± 50 pixel values (PVs)...
2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/26834386/the-effects-of-prism-glasses-and-intensive-upper-limb-exercise-on-hemineglect-upper-limb-function-and-activities-of-daily-living-in-stroke-patients-a-case-series
#13
Se-Il Oh, Jin-Kyung Kim, So-Yeon Park
[Purpose] This study aimed to examine the effects of visual field with prism glasses, and intensive upper limb functional training on reduction of hemineglect and improvement in upper limb function and activities of daily living in three stroke patients with hemineglect. [Subjects] This study included three stroke patients hospitalized in a sanatorium. [Methods] Intervention treatment involving prism glass use for 12 hours and 30 minutes and paretic side upper limb training was conducted 5 days a week for 15 weeks...
December 2015: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/26740144/insect-stereopsis-demonstrated-using-a-3d-insect-cinema
#14
Vivek Nityananda, Ghaith Tarawneh, Ronny Rosner, Judith Nicolas, Stuart Crichton, Jenny Read
Stereopsis - 3D vision - has become widely used as a model of perception. However, all our knowledge of possible underlying mechanisms comes almost exclusively from vertebrates. While stereopsis has been demonstrated for one invertebrate, the praying mantis, a lack of techniques to probe invertebrate stereopsis has prevented any further progress for three decades. We therefore developed a stereoscopic display system for insects, using miniature 3D glasses to present separate images to each eye, and tested our ability to deliver stereoscopic illusions to praying mantises...
2016: Scientific Reports
https://www.readbyqxmd.com/read/26709316/mathematical-models-of-college-myopia
#15
Peter R Greene, Zachary W Grill, Antonio Medina
Experimental design phase of a pilot study at Annapolis is described, using reading glasses, +1.5 D. to +3.0 D. to alleviate college myopia. College students often become 1.0 to 2.0 diopters more myopic, so reading glasses were explored to partially cancel the effects of the study environment. N = 25 different sets of (+)Add lenses are evaluated, for required adjustment period and reading comfort. Three computer models are developed to predict refraction versus time. Basic control system equations predict exponential myopia shift of refractive state R(t) with time constant t0 = 100 days...
January 2016: Optik
https://www.readbyqxmd.com/read/26704142/transient-deficit-of-accommodation-after-laser-barrage-for-retinal-tear
#16
Silvio Polizzi, Takashi Fujikado
PURPOSE: To report a case of transient loss of accommodation after laser photocoagulation for peripheral retinal tear. Loss of accommodation is one of the lesser known and less common complications of peripheral retinal laser photocoagulation. In fact, only a few works concerning this issue have been published so far. Deficit of accommodation has been described only after extensive laser treatment of the peripheral retina. To the best of our knowledge, this is the first case that reports this complication after treatment limited to a small retinal area...
February 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/26688212/pinhole-free-and-surface-nanostructured-niox-film-by-room-temperature-solution-process-for-high-performance-flexible-perovskite-solar-cells-with-good-stability-and-reproducibility
#17
Hong Zhang, Jiaqi Cheng, Francis Lin, Hexiang He, Jian Mao, Kam Sing Wong, Alex K-Y Jen, Wallace C H Choy
Recently, researchers have focused on the design of highly efficient flexible perovskite solar cells (PVSCs), which enables the implementation of portable and roll-to-roll fabrication in large scale. While NiOx is a promising material for hole transport layer (HTL) candidate for fabricating efficient PVSCs on a rigid substrate, the reported NiOx HTLs are formed using different multistep treatments (such as 300-500 °C annealing, O2-plasma, UVO, etc.), which hinders the development of flexible PVSCs based on NiOx...
January 26, 2016: ACS Nano
https://www.readbyqxmd.com/read/26685837/-construction-of-system-for-support-of-multifacility-ivr-dose-analysis-and-research
#18
Lue Sun, Go Hitomi, Koichiro Futatsuya, Mamoru Kato, Satoru Kawauchi, Koichi Morota, Atsuko Tsukamoto, Mikito Hayakawa, Takeji Sakae, Yuji Matsumaru, Koichi Chida, Takashi Moritake
Although measurement and management of angiographic entrance skin dose (ESD) are deemed extremely important, accurate determination of maximum ESD and its location is generally difficult because of the dependence on therapeutic technique and position. Following our development of body-mounted gear bearing radiophotoluminescence glass dosimeter (RPLD) arrays for direct measurement of ESD in cranial and cardiovascular angiography and interventional radiology (IVR), our focus next turned to the limited number of facilities equipped to read RPLD outputs and the need for methods to effectively provide feedback to clinical facilities...
December 2015: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/26591072/from-reading-stones-glasses-and-contact-lenses-to-intraocular-lenses-ophthalmic-lasers-a-short-overview-over-the-history-of-visual-aids
#19
Sibylle K Scholtz, Gerd U Auffarth
Alhazen, ibn al-Haytham, (965 Basra - c. 1040 in Cairo) was a Muslim polymath who made significant contributions to the principles of optics, being the first to recognize the optical effect by transparent objects in the 11th century. His insights led to a fundamental revolution, enabling older presbyopic persons to read again. Today many more options are available to help visually impaired people correct their sight defects. This article will give an historical overview of the sight aids which are available today and will describe the very first beginnings of the development of the "reading stone" or "glasses"...
2012: Vesalius: Acta Internationales Historiae Medicinae
https://www.readbyqxmd.com/read/26572834/a-rapid-dissolution-procedure-to-aid-initial-nuclear-forensics-investigations-of-chemically-refractory-compounds-and-particles-prior-to-gamma-spectrometry
#20
David G Reading, Ian W Croudace, Phillip E Warwick, Richard Britton
A rapid and effective preparative procedure has been evaluated for the accurate determination of low-energy (40-200 keV) gamma-emitting radionuclides ((210)Pb, (234)Th, (226)Ra, (235)U) in uranium ores and uranium ore concentrates (UOCs) using high-resolution gamma ray spectrometry. The measurement of low-energy gamma photons is complicated in heterogeneous samples containing high-density mineral phases and in such situations activity concentrations will be underestimated. This is because attenuation corrections, calculated based on sample mean density, do not properly correct where dense grains are dispersed within a less dense matrix (analogous to a nugget effect)...
November 5, 2015: Analytica Chimica Acta
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