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Effects Of Reading Glasses

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https://www.readbyqxmd.com/read/28599035/rapid-vision-correction-by-special-operations-forces
#1
Mark E Reynolds
BACKGROUND: This report describes a rapid method of vision correction used by Special Operations Medics in multiple operational engagements. METHODS: Between 2011 and 2015, Special Operations Medics used an algorithm- driven refraction technique. A standard block of instruction was provided to the medics, along with a packaged kit. The technique was used in multiple operational engagements with host nation military and civilians. Data collected for program evaluation were later analyzed to assess the utility of the technique...
2017: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/28448807/alternative-sweeteners-influence-the-biomass-of-oral-biofilm
#2
Fathilah Abdul Razak, Baizatul Amirah Baharuddin, Elisya Farha Mohd Akbar, Amira Hanim Norizan, Nur Fazilah Ibrahim, Md Yusoff Musa
OBJECTIVE: Compact-structured oral biofilm accumulates acids that upon prolonged exposure to tooth surface, causes demineralisation of enamel. This study aimed to assess the effect of alternative sweeteners Equal Stevia(®), Tropicana Slim(®), Pal Sweet(®) and xylitol on the matrix-forming activity of plaque biofilm at both the early and established stages of formation. METHODS: Saliva-coated glass beads (sGB) were used as substratum for the adhesion of a mixed-bacterial suspension of Streptococcus mutans, Streptococcus sanguinis and Streptococcus mitis...
August 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28446019/fusion-bead-procedure-for-nuclear-forensics-employing-synthetic-enstatite-to-dissolve-uraniferous-and-other-challenging-materials-prior-to-laser-ablation-inductively-coupled-plasma-mass-spectrometry
#3
David G Reading, Ian W Croudace, Phillip E Warwick
There is an increasing demand for rapid and effective analytical tools to support nuclear forensic investigations of seized or suspect materials. Some methods are simply adapted from other scientific disciplines and can effectively be used to rapidly prepare complex materials for subsequent analysis. A novel sample fusion method is developed, tested, and validated to produce homogeneous, flux-free glass beads of geochemical reference materials (GRMs), uranium ores, and uranium ore concentrates (UOC) prior to the analysis of 14 rare earth elements (REE) via laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS)...
June 6, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28392813/effect-of-accelerated-aging-on-color-change-of-direct-and-indirect-fiber-reinforced-composite-restorations
#4
Masoumeh Hasani Tabatabaei, Farnaz Farahat, Elham Ahmadi, Zahra Hassani
OBJECTIVES: The aim of this study was to assess the effect of artificial accelerated aging (AAA) on color change of direct and indirect fiber-reinforced composite (FRC) restorations. MATERIALS AND METHODS: Direct (Z250) and indirect (Gradia) composite resins were reinforced with glass (GF) and polyethylene fibers (PF) based on the manufacturers' instructions. Forty samples were fabricated and divided into eight groups (n=5). Four groups served as experimental groups and the remaining four served as controls...
June 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28386574/quantitative-electroencephalograms-and-neuro-optometry-a-case-study-that-explores-changes-in-electrophysiology-while-wearing-therapeutic-eyeglasses
#5
Deborah Zelinsky, Corey Feinberg
The brain is equipped with a complex system for processing sensory information, including retinal circuitry comprising part of the central nervous system. Retinal stimulation can influence brain function via customized eyeglasses at both subcortical and cortical levels. We investigated cortical effects from wearing therapeutic eyeglasses, hypothesizing that they can create measureable changes in electroencephalogram (EEG) tracings. A Z-Bell(SM) test was performed on a participant to select optimal lenses. An EEG measurement was recorded before and after the participant wore the eyeglasses...
January 2017: Neurophotonics
https://www.readbyqxmd.com/read/28378561/comparison-of-objective-and-subjective-changes-induced-by-multiple-pinhole-glasses-and-single-pinhole-glasses
#6
Won Soo Kim, In Ki Park, Young Kee Park, Yeoun Sook Chun
Multiple-pinhole (MPH) glasses are currently sold in many countries with unproven advertisements; however, their objective and subjective effects have not been investigated. Therefore, to investigate the effects of MPH glasses excluding the single-pinhole (SPH) effect, we compared the visual functional changes, reading speed, and ocular discomfort after reading caused by MPH and SPH glasses. Healthy 36 participants with a mean age of 33.1 years underwent examinations of pupil size, visual acuity (VA), depth of focus (DOF), and near point accommodation (NPA); tests for visual field (VF), contrast sensitivity (CS), stereopsis, and reading speed; and a survey of ocular discomfort after reading...
May 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28340498/academic-difficulties-in-children-with-prenatal-alcohol-exposure-presence-profile-and-neural-correlates
#7
Leila Glass, Eileen M Moore, Natacha Akshoomoff, Kenneth Lyons Jones, Edward P Riley, Sarah N Mattson
BACKGROUND: Academic achievement was evaluated in children with heavy prenatal alcohol exposure to determine potential strengths and weaknesses, evaluate the utility of different definitions for identifying low academic performance, and explore the neural correlates that may underlie academic performance. METHODS: Children (8 to 16 years) were assessed using the WIAT-II. Patterns of performance were examined in 2 subject groups: children with heavy prenatal alcohol exposure (n = 67) and controls (n = 61)...
May 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28337792/overestimation-of-stereo-thresholds-by-the-tno-stereotest-is-not-due-to-global-stereopsis
#8
Kathleen Vancleef, Jenny C A Read, William Herbert, Nicola Goodship, Maeve Woodhouse, Ignacio Serrano-Pedraza
PURPOSE: It has been repeatedly shown that the TNO stereotest overestimates stereo threshold compared to other clinical stereotests. In the current study, we test whether this overestimation can be attributed to a distinction between 'global' (or 'cyclopean') and 'local' (feature or contour-based) stereopsis. METHODS: We compared stereo thresholds of a global (TNO) and a local clinical stereotest (Randot Circles). In addition, a global and a local psychophysical stereotest were added to the design...
March 23, 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28281254/gold-nanorod-array-biochip-for-label-free-multiplexed-biological-detection
#9
Zhong Mei, Yanyan Wang, Liang Tang
Gold nanorod (GNR) based label-free sensing has been attractive due to its unique property of localized surface plasmon resonance (LSPR). Compared to bulk gold, the SPR of GNRs is more sensitive to the refractive index change caused by biological binding in the close proximity. Numerous studies have reported biological detection in solution based GNR probes. However, the biosensing has the intrinsic problems of fluctuating readings and short storage time due to nanoparticle aggregation. In contrast, a chip-based nanorod biosensor is a more robust and reliable platform...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28245603/testing-of-piezo-actuated-glass-micro-membranes-by-optical-low-coherence-reflectometry
#10
Sabina Merlo, Paolo Poma, Eleonora Crisà, Dino Faralli, Marco Soldo
In this work, we have applied optical low-coherence reflectometry (OLCR), implemented with infra-red light propagating in fiberoptic paths, to perform static and dynamic analyses on piezo-actuated glass micro-membranes. The actuator was fabricated by means of thin-film piezoelectric MEMS technology and was employed for modifying the micro-membrane curvature, in view of its application in micro-optic devices, such as variable focus micro-lenses. We are here showing that OLCR incorporating a near-infrared superluminescent light emitting diode as the read-out source is suitable for measuring various parameters such as the micro-membrane optical path-length, the membrane displacement as a function of the applied voltage (yielding the piezo-actuator hysteresis) as well as the resonance curve of the fundamental vibration mode...
February 25, 2017: Sensors
https://www.readbyqxmd.com/read/28150489/increasing-binding-efficiency-via-reporter-shape-and-flux-in-a-viral-nanoparticle-lateral-flow-assay
#11
Jinsu Kim, Binh Vu, Katerina Kourentzi, Richard C Willson, Jacinta C Conrad
To identify factors controlling the performance of reporter particles in a sensitive lateral-flow assay (LFA), we investigated the effect of the flux and shape of filamentous bacteriophage (phage) on the performance of phage LFAs. Phage of three different lengths and diameters were modified with biotin and AlexaFluor 555 as binding and read-out elements, respectively. The binding efficiencies of the functionalized phage were tested in a fibrous glass LFA membrane modified with avidin. The total binding rate, quantified using real-time particle counting and particle image velocimetry, decreased monotonically with the average bulk flux of phage through the membrane...
March 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28047216/su-f-t-329-characteristic-study-of-a-rado-photoluminescenct-glass-dosimeter-with-accumulated-dose
#12
D Kim, M Yoon, W Chung, M Chung
PURPOSE: This study investigated the effect of accumulated dose on radiophotoluminescent glass dosimeter in megavoltage photon. METHODS: 45 commercially-available radio-photoluminescence glass dosimeters (RPLGD; GD-302M, Asahi Techno Glass Co., Shizuoka, JAPAN) were irradiated to 10 × 10 cm(2) open-field with 6, 10 and 15 MV photon beams at 100 cm of source to surface distance and dose maximum depths. Each energy has consists of five groups which is consists of three detectors...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28029555/speech-adjustments-for-room-acoustics-and-their-effects-on-vocal-effort
#13
Pasquale Bottalico
OBJECTIVES: The aims of the present study are (1) to analyze the effects of the acoustical environment and the voice style on time dose (Dt_p) and fundamental frequency (mean f0 and standard deviation std_f0) while taking into account the effect of short-term vocal fatigue and (2) to predict the self-reported vocal effort from the voice acoustical parameters. METHODS: Ten male and ten female subjects were recorded while reading a text in normal and loud styles, in three rooms-anechoic, semi-reverberant, and reverberant-with and without acrylic glass panels 0...
May 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28028819/a-pilot-randomized-controlled-trial-comparing-effectiveness-of-prism-glasses-visual-search-training-and-standard-care-in-hemianopia
#14
F J Rowe, E J Conroy, E Bedson, E Cwiklinski, A Drummond, M García-Fiñana, C Howard, A Pollock, T Shipman, C Dodridge, C MacIntosh, S Johnson, C Noonan, G Barton, C Sackley
OBJECTIVE: Pilot trial to compare prism therapy and visual search training, for homonymous hemianopia, to standard care (information only). METHODS: Prospective, multicentre, parallel, single-blind, three-arm RCT across fifteen UK acute stroke units. PARTICIPANTS: Stroke survivors with homonymous hemianopia. INTERVENTIONS: Arm a (Fresnel prisms) for minimum 2 hours, 5 days per week over 6 weeks. Arm b (visual search training) for minimum 30 minutes, 5 days per week over 6 weeks...
December 27, 2016: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/27943250/multifocal-versus-monofocal-intraocular-lenses-after-cataract-extraction
#15
REVIEW
Samantha R de Silva, Jennifer R Evans, Varo Kirthi, Mohammed Ziaei, Martin Leyland
BACKGROUND: Good unaided distance visual acuity (VA) is now a realistic expectation following cataract surgery and intraocular lens (IOL) implantation. Near vision, however, still requires additional refractive power, usually in the form of reading glasses. Multiple optic (multifocal) IOLs are available which claim to allow good vision at a range of distances. It is unclear whether this benefit outweighs the optical compromises inherent in multifocal IOLs. OBJECTIVES: To assess the visual effects of multifocal IOLs in comparison with the current standard treatment of monofocal lens implantation...
December 12, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27899319/cost-effective-raspberry-pi-based-radio-frequency-identification-tagging-of-mice-suitable-for-automated-in-vivo-imaging
#16
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...
January 30, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27846341/avoiding-monocular-artifacts-in-clinical-stereotests-presented-on-column-interleaved-digital-stereoscopic-displays
#17
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
#18
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 3D printer. The sampling efficiency of the EoS cyclone was determined using polydisperse glass sphere particles and a time-of-flight direct reading instrument...
May 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/27575289/visual-complaints-and-eye-problems-in-orchestral-musicians
#19
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
#20
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
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