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https://www.readbyqxmd.com/read/28734565/topical-brinzolamide-in-congenital-nystagmus-a-retrospective-study
#1
M Nieves-Moreno, L Morales Fernández, B Domingo Gordo, E Maillo, E Diaz, R Gómez-de-Liaño
OBJECTIVE: To evaluate the effect of treatment with topical brinzolamide on visual acuity and nystagmus intensity in patients with congenital nystagmus. MATERIAL AND METHODS: A retrospective study was designed in which the clinical records of 14 patients with congenital nystagmus were reviewed. All patients underwent a complete ophthalmological examination and a Perea video-oculography (VOG) before, and three days after, initiation of treatment with topical brinzolamide (Azopt)...
July 19, 2017: Archivos de la Sociedad Española de Oftalmología
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
#2
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/28729789/in-vitro-evaluation-of-microleakage-under-orthodontic-brackets-bonded-with-different-adhesive-systems
#3
Ramin Atash, Ali Fneiche, Sibel Cetik, Babak Bahrami, Alain Balon-Perin, Maria Orellana, Régine Glineur
OBJECTIVE: Adhesives systems have a drawback when utilized for bonding orthodontic brackets: they shrink during photopolymerization creating microleakage. The aim of this study was to assess the stability of different orthodontic adhesives around brackets and enamel. MATERIALS AND METHODS: Sixty noncarious mandibular premolars extracted for orthodontic reasons were randomly divided into six groups of adhesives used for bonding brackets to dental enamel: NeoBond(®) Light Cure Adhesive Kit, Transbond™ Plus Self-Etching, Victory V-Slot APC PLUS(®) + Transbond™ MIP, Rely-A-Bond(®) Kit, Light Cure Orthodontic Adhesive Kit (OptiBond(®)), and Transbond™ MIP...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28728924/strabismus-measurements-with-novel-video-goggles
#4
Konrad P Weber, Daniel Rappoport, Muriel Dysli, Tanja Schmückle Meier, Guy B Marks, Christopher J Bockisch, Klara Landau, Hamish G MacDougall
PURPOSE: To assess the validity of a novel, simplified, noninvasive test for strabismus using video goggles. DESIGN: Cross-sectional method comparison study in which the new test, the strabismus video goggles, is compared with the existing reference standard, the Hess screen test. PARTICIPANTS: We studied 41 adult and child patients aged ≥6 years with ocular misalignment owing to congenital or acquired paralytic or comitant strabismus and 17 healthy volunteers...
July 17, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28728170/a-normative-data-set-for-the-clinical-assessment-of-achromatic-and-chromatic-contrast-sensitivity-using-a-qcsf-approach
#5
Yeon Jin Kim, Alexandre Reynaud, Robert F Hess, Kathy T Mullen
Purpose: The measurement of achromatic sensitivity has been an important tool for monitoring subtle changes in vision as the result of disease or response to therapy. In this study, we aimed to provide a normative data set for achromatic and chromatic contrast sensitivity functions within a common cone contrast space using an abbreviated measurement approach suitable for clinical practice. In addition, we aimed to provide comparisons of achromatic and chromatic binocular summation across spatial frequency...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28725373/high-resolution-photo-mosaic-time-series-imagery-for-monitoring-human-use-of-an-artificial-reef
#6
Georgina Wood, Tim P Lynch, Carlie Devine, Krystle Keller, Will Figueira
Successful marine management relies on understanding patterns of human use. However, obtaining data can be difficult and expensive given the widespread and variable nature of activities conducted. Remote camera systems are increasingly used to overcome cost limitations of conventional labour-intensive methods. Still, most systems face trade-offs between the spatial extent and resolution over which data are obtained, limiting their application. We trialed a novel methodology, CSIRO Ruggedized Autonomous Gigapixel System (CRAGS), for time series of high-resolution photo-mosaic (HRPM) imagery to estimate fine-scale metrics of human activity at an artificial reef located 1...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28724749/columnar-segregation-of-magnocellular-and-parvocellular-streams-in-human-extrastriate-cortex
#7
Roger B H Tootell, Shahin Nasr
'Magno- vs. parvo-cellular' (M-P) streams are fundamental to the organization of macaque visual cortex. Segregated, paired M-P streams extend from retina through LGN into V1. The M stream extends further into area V5/MT, and parts of V2. However elsewhere in visual cortex, it remains unclear whether M-P-derived information 1) becomes intermixed, or 2) remains segregated in M-P dominated columns and neurons. Here we tested whether M-P streams exist in extrastriate cortical columns, in 8 human subjects (4 female)...
July 19, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28723781/assessment-of-optic-disc-and-ganglion-cell-layer-in-diabetes-mellitus-type-2
#8
Evre Pekel, Gökhan Tufaner, Hüseyin Kaya, Alper Kaşıkçı, Gökhan Deda, Gökhan Pekel
The purpose of this study was to compare the optic disc parameters, retinal nerve fiber (RNFL), and macular ganglion cell layers between patients with diabetes mellitus (DM) type 2 and healthy controls.In this cross-sectional study, 69 eyes of 69 diabetic patients without diabetic retinopathy and 47 eyes of 47 healthy controls were included. Optic disc parameters (i.e., rim area, disc area, cup to disc ratio, cup volume), RNFL, and macular ganglion cell-inner plexiform layers (GCL + IPL) thickness were measured by means of spectral domain optical coherence tomography...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28721935/prevalence-of-eye-disease-and-visual-impairment-in-%C3%A3-le-de-la-gonave-ha%C3%A3-ti
#9
B Tousignant, J Brûlé
Epidemiological data describing the prevalence of blindness and visual impairment in Haiti are sparse. The Haitian National Committee for the Prevention of Blindness (CNPC) estimates the prevalence of blindness at 1 %. Other regional data estimate moderate and severe visual impairment at 5% and 22%, respectively. IRIS Mundial (IM) is a non-governmental organization collaborating with the CNPC to develop eye care infrastructure in Haiti. To estimate the prevalence and causes of blindness and visual impairment on the Haitian island of Gonâve, to assist in planning of relevant eye care infrastructure...
July 19, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28720313/binocular-diplopia-in-a-tertiary-hospital-aetiology-diagnosis-and-treatment
#10
P Merino, D Fuentes, P Gómez de Liaño, M A Ordóñez
OBJECTIVE: To study the causes, diagnosis and treatment in a case series of binocular diplopia. MATERIAL AND METHOD: A retrospective chart review was performed on patients seen in the Diplopia Unit of a tertiary centre during a one-year period. Diplopia was classified as: acute≤1 month since onset; subacute (1-6 months); and chronic (>6 months). Resolution of diplopia was classified as: spontaneous if it disappeared without treatment, partial if the course was intermittent, and non-spontaneous if treatment was required...
July 15, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28714802/binocular-vision-disorders-and-visual-attention-associations-with-balance-and-mobility-in-older-adults
#11
Mohammed M Althomali, Susan J Leat
Understanding which aspects of vision are related to falls is important. We examine the associations between tests of balance, mobility, fear of falling (FES-1) and aspects of vision in 72 adults aged 70+. Balance and mobility were examined using the One Legged Stance test (OLST), the Sit to Stand test (STST) and the 5 Meter Walking test (5MWT). Visual measures included visual acuity (VA), contrast sensitivity, stereoacuity, binocular vision (BV) measurements, Useful field of View (UFV) and Attended Field of View (AFOV)...
July 17, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28714555/evidence-that-eye-movement-profiles-do-not-explain-slow-binocular-rivalry-rate-in-bipolar-disorder-support-for-a-perceptual-endophenotype
#12
Phillip Cf Law, Caroline T Gurvich, Trung T Ngo, Steven M Miller
OBJECTIVES: Presenting conflicting images simultaneously, one to each eye, produces perceptual alternations known as binocular rivalry (BR). Slow BR rate has been proposed as an endophenotype for bipolar disorder (BD) for use in large-scale genome-wide association studies. However, the trait could conceivably reflect eye movement (EM) dysfunction in BD rather than anomalous perceptual processing per se. To address this question, we examined the relationship between EM profiles and BR rate for various stimulus types in BD and healthy subjects...
July 17, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28712567/perceived-object-trajectory-is-influenced-by-others-tracking-movements
#13
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/28707239/microplastic-pollution-in-deposited-urban-dust-tehran-metropolis-iran
#14
Sharareh Dehghani, Farid Moore, Razegheh Akhbarizadeh
Environmental pollutants such as microplastics have become a major concern over the last few decades. We investigated the presence, characteristics, and potential health risks of microplastic dust ingestion. The plastic load of 88 to 605 microplastics per 30 g dry dust with a dominance of black and yellow granule microplastics ranging in size from 250 to 500 μm was determined in 10 street dust samples using a binocular microscope. Fluorescence microscopy was found to be ineffective for detecting and counting plastic debris...
July 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28698242/abnormal-fixational-eye-movements-in-strabismus
#15
Fatema F Ghasia, Jorge Otero-Millan, Aasef G Shaikh
INTRODUCTION: Fixational saccades are miniature eye movements that constantly change the gaze during attempted visual fixation. Visually guided saccades and fixational saccades represent an oculomotor continuum and are produced by common neural machinery. Patients with strabismus have disconjugate binocular horizontal saccades. We examined the stability and variability of eye position during fixation in patients with strabismus and correlated the severity of fixational instability with strabismus angle and binocular vision...
July 11, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28696323/attention-model-of-binocular-rivalry
#16
Hsin-Hung Li, James Rankin, John Rinzel, Marisa Carrasco, David J Heeger
When the corresponding retinal locations in the two eyes are presented with incompatible images, a stable percept gives way to perceptual alternations in which the two images compete for perceptual dominance. As perceptual experience evolves dynamically under constant external inputs, binocular rivalry has been used for studying intrinsic cortical computations and for understanding how the brain regulates competing inputs. Converging behavioral and EEG results have shown that binocular rivalry and attention are intertwined: binocular rivalry ceases when attention is diverted away from the rivalry stimuli...
July 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28695758/differential-vergence-movements-in-reading-chinese-and-english-greater-fixation-initial-binocular-disparity-is-advantageous-in-reading-the-denser-orthography
#17
Yi-Ting Hsiao, Richard Shillcock, Mateo Obregón, Hamutal Kreiner, Matthew A J Roberts, Scott McDonald
We explore two aspects of exovergence: we test whether smaller binocular fixation disparities accompany the shorter saccades and longer fixations observed in reading Chinese; we test whether potentially advantageous psychophysical effects of exovergence (cf. Arnold & Schindel, 2010; Kersten & Murray, 2010) transfer to text reading. We report differential exovergence in reading Chinese and English: Chinese readers begin fixations with more binocular disparity, but end fixations with a disparity closely similar to that of the English readers...
July 11, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28694464/monocular-deprivation-induces-dendritic-spine-elimination-in-the-developing-mouse-visual-cortex
#18
Yanmei Zhou, Baoling Lai, Wen-Biao Gan
It is well established that visual deprivation has a profound impact on the responsiveness of neurons in the developing visual cortex. The effect of visual deprivation on synaptic connectivity remains unclear. Using transcranial two-photon microscopy, we examined the effect of visual deprivation and subsequent recovery on dendritic spine remodeling of layer 5 pyramidal neurons in the mouse primary visual cortex. We found that monocular deprivation (MD), but not binocular deprivation (BD), increased dendritic spine elimination over 3 days in the binocular region of 4-week-old adolescent mice...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28690585/saccadic-impairments-in-patients-with-the-norrbottnian-form-of-gaucher-s-disease-type-3
#19
Josefine Blume, Stanislav Beniaminov, Cecilia Kämpe Björkvall, Maciej Machaczka, Per Svenningsson
BACKGROUND: Chronic neuronopathic Gaucher's disease type 3 (GD3) is relatively frequent in northern Sweden. Besides multiple other neurological symptoms, horizontal gaze palsy or oculomotor apraxia is common in GD3. OBJECTIVE: To characterize the saccades in patients with Norrbottnian GD3 with respect to their neurological and cognitive status using a computer-based eye-tracking technique. METHODS: Horizontal and vertical reflexive saccades as well as antisaccades of nine GD3 patients [4M/5F; 41...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28687845/wayfinding-and-glaucoma-a-virtual-reality-experiment
#20
Fábio B Daga, Eduardo Macagno, Cory Stevenson, Ahmed Elhosseiny, Alberto Diniz-Filho, Erwin R Boer, Jürgen Schulze, Felipe A Medeiros
Purpose: Wayfinding, the process of determining and following a route between an origin and a destination, is an integral part of everyday tasks. The purpose of this study was to investigate the impact of glaucomatous visual field loss on wayfinding behavior using an immersive virtual reality (VR) environment. Methods: This cross-sectional study included 31 glaucomatous patients and 20 healthy subjects without evidence of overall cognitive impairment. Wayfinding experiments were modeled after the Morris water maze navigation task and conducted in an immersive VR environment...
July 1, 2017: Investigative Ophthalmology & Visual Science
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