16,960 results match your criteria Binocular Vision and Strabology Quarterly Simms-Romano[Journal]


Compact radio emission indicates a structured jet was produced by a binary neutron star merger.

Science 2019 Feb 21. Epub 2019 Feb 21.

Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 831001, China.

The binary neutron star merger event GW170817 was detected through both electromagnetic radiation and gravitational waves. Its afterglow emission may have been produced by either a narrow relativistic jet or an isotropic outflow. High-spatial-resolution measurements of the source size and displacement can discriminate between these scenarios. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1126/science.aau8815DOI Listing
February 2019

Convergence insufficiency and accommodative insufficiency in children.

BMC Ophthalmol 2019 Feb 21;19(1):58. Epub 2019 Feb 21.

Departamento de Ciências Sociais e Humanas, Universidade da Beira Interior, Covilhã, Portugal.

Purpose: Convergence and accommodative insufficiency represent the main cause of complaints during close visual work and can reduce visual performance and comfort. Knowing their prevalence among schoolchildren is fundamental to define strategies for action. The purpose of this study was to estimate the frequency of these conditions in children in 5th and 6th school years in inland Portugal and to assess the impact that each visual condition has on their quality of life, based on the level of visual symptoms. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s12886-019-1061-xDOI Listing
February 2019

Aniseikonia and anisometropia: implications for suppression and amblyopia.

Clin Exp Optom 2019 Feb 21. Epub 2019 Feb 21.

School of Optometry and Vision Science, The University of Auckland, Auckland, New Zealand.

Aniseikonia is a difference in the perceived size or shape of images between eyes, and can arise from a variety of physiological, neurological, retinal, and optical causes. Aniseikonia is associated with anisometropia, as both anisometropia itself and the optical correction for anisometropia can cause aniseikonia. Image size differences above one to three per cent can be clinically symptomatic. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/cxo.12881DOI Listing
February 2019

Repair Techniques for Failed Double-Eyelids Involving Restoration of Eyelid Anatomical Structure and Function.

Aesthetic Plast Surg 2019 Feb 20. Epub 2019 Feb 20.

Mylike Medical Cosmetic Hospital, Shanghai, China.

Background: This study aimed to evaluate techniques for repairing previously failed double-eyelid surgeries based on different anatomical structure injuries.

Methods: A total of 120 patients with failed double-eyelids in our hospital were enrolled and classified into four types according to their anatomical structure damage: type I, unsmooth radians of the double-eyelid line; type II, upper socket depression; type III, iatrogenic ptosis; and type IV, comprehensive damage. Accordingly, methods of restoration included orbital septum fat supplement, repair of levator palpebrae superioris, and treatment of scar. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00266-019-01328-2DOI Listing
February 2019

Neuromodulatory control of localized dendritic spiking in critical period cortex.

Nature 2019 Feb 20. Epub 2019 Feb 20.

Department of Neurobiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.

Sensory experience in early postnatal life, during so-called critical periods, restructures neural circuitry to enhance information processing. Why the cortex is susceptible to sensory instruction in early life and why this susceptibility wanes with age are unclear. Here we define a developmentally restricted engagement of inhibitory circuitry that shapes localized dendritic activity and is needed for vision to drive the emergence of binocular visual responses in the mouse primary visual cortex. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41586-019-0963-3DOI Listing
February 2019

The impact of age-related cataracts on colour perception, postoperative recovery and related spectra derived from test of hue perception.

BMC Ophthalmol 2019 Feb 20;19(1):56. Epub 2019 Feb 20.

Department of Ophthalmology, Peking University Third Hospital, Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Number Forty-Nine North Garden Road Haidian District, Beijing, 86100191, China.

Background: Cataract patients were always excluded from studies on ageing of colour vision; thus, effect of age-related cataracts on deterioration of colour perception has not been analysed. In present study, impacts of age-related cataracts on colour discrimination, postoperative recovery and related spectra were investigated.

Methods: In this cohort study, thirty age-related cataract patients scheduled for binocular surgery and 30 elderly volunteers were enrolled. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s12886-019-1057-6DOI Listing
February 2019

Prevalence of amblyopia and strabismus in Hani school children in rural southwest China: a cross-sectional study.

BMJ Open 2019 Feb 19;9(2):e025441. Epub 2019 Feb 19.

Department of Ophthalmology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China.

Purpose: To determine the prevalence rate of amblyopia and strabismus in Chinese Hani ethnic school-aged children.

Methods: All grade 1 and grade 7 students in Mojiang Hani Autonomous County, located in southwest China, were invited for comprehensive eye examinations performed by experienced ophthalmologists and optometrists, including visual acuity, ocular alignment and movements, cycloplegic autorefraction, anterior segment and fundus examinations. Standard definitions of amblyopia and strabismus were applied to calculate their prevalence rate. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1136/bmjopen-2018-025441DOI Listing
February 2019

Gaze Trajectory Index (GTI): A novel metric to quantify saccade trajectory deviation using eye tracking.

Comput Biol Med 2019 Feb 15;107:86-96. Epub 2019 Feb 15.

Laboratory of Bioengineering, Experimental Diagnostic and Specialty Medicine Dept. (DIMES), University of Bologna, Policlinico S. Orsola Malpighi, Via Massarenti 9, 40138, Bologna Italy. Electronic address:

Background: Many different indexes have been proposed to quantify saccade curvature based on geometric properties of the saccade trajectory projected on the 2D plane. We introduce the Gaze Trajectory Index (GTI), a novel metric to quantify saccade trajectory deviation based on calculation of the rotational eye movements performed in 3D space while following a 2D saccade trajectory recorded with eye tracking (ET).

Methods: We provided a description of GTI calculation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.compbiomed.2019.02.003DOI Listing
February 2019

Lateralization in accuracy, reaction time and behavioral processes in a visual discrimination task in an Indo-Pacific bottlenose dolphin (Tursiops aduncus).

Behav Processes 2019 Feb 16;162:112-118. Epub 2019 Feb 16.

Ocean Park, 180 Wong Chuk Hang Road, Aberdeen, Hong Kong. Electronic address:

Perceptual and behavioral asymmetry has been observed in a wide range of vertebrate and invertebrate species with its origin estimated to go back over 500 million years. Previously, hemispheric lateralization in marine mammals has been recorded during foraging, parental care, preferred swimming direction as well as when solving cognitive challenges. Visual laterality has been demonstrated in preferred eye use and performance accuracy. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.beproc.2019.02.003DOI Listing
February 2019

Assessment of Binocular Imbalance with an Augmented Virtual Reality Platform in a Normal Population.

Cyberpsychol Behav Soc Netw 2019 Feb;22(2):127-131

2 Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.

We examined and analyzed binocular imbalance in a group of randomly selected normal subjects with corrected visual acuity of 0.8 or more in both eyes without ocular diseases, by using augmented virtual reality system. This study will quantify the correlation between binocular imbalance in these normal subjects and various spatial frequencies and temporal frequencies in the integrated binocular stimulation mode. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1089/cyber.2019.0020DOI Listing
February 2019

The prevalence and diagnosis of 'stereoblindness' in adults less than 60 years of age: a best evidence synthesis.

Ophthalmic Physiol Opt 2019 03;39(2):66-85

School of Optometry, University of California, Berkeley, USA.

Purpose: Stereoscopic vision (or stereopsis) is the ability to perceive depth from binocular disparity - the difference of viewpoints between the two eyes. Interestingly, there are large individual differences as to how well one can appreciate depth from such a cue. The total absence of stereoscopic vision, called 'stereoblindness', has been associated with negative behavioural outcomes such as poor distance estimation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/opo.12607DOI Listing

Comparison of Visual Fatigue caused by Head-Mounted Display for Virtual Reality and Two-Dimensional Display using Objective and Subjective Evaluation.

Ergonomics 2019 Feb 18:1-33. Epub 2019 Feb 18.

a Department of Applied Visual Science , Osaka University Graduate School of Medicine , Suita , Osaka , Japan.

This study aimed to evaluate objective and subjective visual fatigue experienced before and after performing a visual task, while using a head-mounted display for virtual reality (VR-HMD) and two-dimensional (2D) display. Binocular fusion maintenance (BFM) was measured using a binocular open-view Shack-Hartmann wavefront aberrometer equipped with liquid crystal shutters. Twelve healthy subjects performed the BFM test and completed a questionnaire regarding subjective symptoms before and after performing a visual task that induces low visually induced motion sickness (VIMS). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1080/00140139.2019.1582805DOI Listing
February 2019

Positioning, Navigation, and Book Accessing/Returning in an Autonomous Library Robot using Integrated Binocular Vision and QR Code Identification Systems.

Sensors (Basel) 2019 Feb 14;19(4). Epub 2019 Feb 14.

School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.

With rapid advancements in artificial intelligence and mobile robots, some of the tedious yet simple jobs in modern libraries, like book accessing and returning (BAR) operations that had been fulfilled manually before, could be undertaken by robots. Due to the limited accuracies of the existing positioning and navigation (P&N) technologies and the operational errors accumulated within the robot P&N process, however, most of the current robots are not able to fulfill such high-precision operations. To address these practical issues, we propose, for the first time (to the best of our knowledge), to combine the binocular vision and Quick Response (QR) code identification techniques together to improve the robot P&N accuracies, and then construct an autonomous library robot for high-precision BAR operations. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/s19040783DOI Listing
February 2019

Cholinergic Potentiation Alters Perceptual Eye Dominance Plasticity Induced by a Few Hours of Monocular Patching in Adults.

Front Neurosci 2019 31;13:22. Epub 2019 Jan 31.

Laboratoire de Neurobiologie de la Cognition Visuelle, École d'Optométrie, Université de Montréal, Montréal, QC, Canada.

A few hours of monocular deprivation with a diffuser eye patch temporarily strengthens the contribution of the deprived eye to binocular vision. This shift in favor of the deprived eye is characterized as a form of adult visual plasticity. Studies in animal and human models suggest that neuromodulators can enhance adult brain plasticity in general. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3389/fnins.2019.00022DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365463PMC
January 2019

Avian data from Kenyir rainforest trail.

Data Brief 2018 Dec 28;21:2633-2637. Epub 2018 Nov 28.

Bird Group Taman Negara (BGTN), Kuala Tahan, 27000 Jerantut, Pahang, Malaysia.

This data article is constructed using avian (bird) counts from a recently identified trail in Kenyir rainforest, East Peninsular Malaysia. Avian chirps and naked eye visual were simultaneously used to locate the birds. After visual binocular and digital image inspection, identification of avian species were carried out using reference books. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.dib.2018.11.119DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6290243PMC
December 2018

Long-Term Clinical Outcomes after Mix and Match Implantation of Two Multifocal Intraocular Lenses with Different Adds.

J Ophthalmol 2019 14;2019:6789263. Epub 2019 Jan 14.

Tianjin Medical University Eye Hospital, Tianjin Medical University Eye Institute & Tianjin Medical University School of Optometry and Ophthalmology, No. 251, Fukang Road, Nankai District, Tianjin 300384, China.

Purpose: To compare long-term clinical outcomes between patients with bilateral implantation of +3.0 diopter (D) multifocal intraocular lenses (IOLs) and mix and match implantation of +2.5 D and +3. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1155/2019/6789263DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6348908PMC
January 2019

Using smartphone-delivered stereoscopic vision in microsurgery: a feasibility study.

Eye (Lond) 2019 Feb 12. Epub 2019 Feb 12.

Ophthalmology Department, Singleton Hospital, Sketty Lane, Sketty, Swansea, SA2 8QA, UK.

Background: Many surgical specialties are increasingly looking towards robot-assisted surgeries to improve patient outcome. Surgeons conducting robot-assisted operations require real-time surgical view. Ophthalmic robots can lead to novel vitreoretinal treatments, such as cannulating retinal vessels or even gene delivery to targeted retinal cells. Read More

View Article

Download full-text PDF

Source
http://www.nature.com/articles/s41433-019-0356-8
Publisher Site
http://dx.doi.org/10.1038/s41433-019-0356-8DOI Listing
February 2019
1 Read

Sirolimus (rapamycin) for the targeted treatment of the fibrotic sequelae of Graves' orbitopathy.

Eye (Lond) 2019 Feb 12. Epub 2019 Feb 12.

Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.

Background: Rapamycin (alternatively known as sirolimus) is a macrolide immunosuppressant commonly used for organ transplantation. It acts both on lymphocytes through the mechanistic target of rapamycin (mTOR) pathway to reduce their sensitivity to interleukin-2 (IL-2) and, importantly, also has anti-fibrotic properties by acting on myofibroblasts. The latter have been implicated in the pathogenesis of thyroid eye disease (TED). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41433-019-0340-3DOI Listing
February 2019
2 Reads

Diabetic macular oedema and diode subthreshold micropulse laser (DIAMONDS): study protocol for a randomised controlled trial.

Trials 2019 Feb 12;20(1):122. Epub 2019 Feb 12.

The Northern Ireland Clinical Trials Unit (NICTU), Belfast, UK.

Background: In the UK, macular laser is the treatment of choice for people with diabetic macular oedema with central retinal subfield thickness (CST) < 400 μm, as per National Institute for Health and Care Excellence guidelines. It remains unclear whether subthreshold micropulse laser is superior and should replace standard threshold laser for the treatment of eligible patients.

Methods: DIAMONDS is a pragmatic, multicentre, allocation-concealed, randomised, equivalence, double-masked clinical trial that aims to determine the clinical effectiveness and cost-effectiveness of subthreshold micropulse laser compared with standard threshold laser, for the treatment of diabetic macular oedema with CST < 400 μm. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s13063-019-3199-5DOI Listing
February 2019
1 Read
2.117 Impact Factor

Identification of a Novel Variant in Compound-Heterozygous State in a Patient With Alport Syndrome and Histological Findings Similar to Focal Segmental Glomerulosclerosis (FSGS).

Front Genet 2018 28;9:748. Epub 2019 Jan 28.

Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

Alport syndrome (AS) is a rare and inherited renal disorder with an autosomal recessive mode of inheritance. AS patients usually manifest with hematuria and progressive renal disorder also occasionally accompanied by hearing loss and ophthalmic disease. Germline variants in collagen type IV α-4 () gene lead to autosomal recessive Alport syndrome. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3389/fgene.2018.00748DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6360158PMC
January 2019
1 Read

Nell2 regulates the contralateral-versus-ipsilateral visual projection as a domain-specific positional cue.

Development 2019 Feb 18;146(4). Epub 2019 Feb 18.

Aberdeen Developmental Biology Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK

In mammals with binocular vision, retinal ganglion cell (RGC) axons from each eye project to eye-specific domains in the contralateral and ipsilateral dorsal lateral geniculate nucleus (dLGN), underpinning disparity-based stereopsis. Although domain-specific axon guidance cues that discriminate contralateral and ipsilateral RGC axons have long been postulated as a key mechanism for development of the eye-specific retinogeniculate projection, the molecular nature of such cues has remained elusive. Here, we show that the extracellular glycoprotein Nell2 (neural epidermal growth factor-like-like 2) is expressed in the dorsomedial region of the dLGN, which ipsilateral RGC axons terminate in and contralateral axons avoid. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1242/dev.170704DOI Listing
February 2019

Acute Visual Disorders-What Should the Neurologist Know?

Semin Neurol 2019 Feb 11;39(1):53-60. Epub 2019 Feb 11.

Department of Neurology, The Johns Hopkins Hospital, Baltimore, Maryland.

Normal vision requires coordination of precisely controlled and coordinated eye movements and normal function of a large cortical and subcortical sensory network. Given the required precision of the system and wide anatomic distribution of the motor and sensory visual systems, vision can be disrupted by a variety of central and peripheral nervous system disorders. While many of these may be relatively benign or have no proven therapy, several may be isolated presentations or harbingers of more serious neurologic conditions. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1055/s-0038-1677007DOI Listing
February 2019
1 Read

Rotational (de)-excitation of linear CO by collision with He.

Phys Chem Chem Phys 2019 Feb;21(8):4606-4612

LSAMA, Université Tunis El-Manar, Tunis, Tunisia.

Tricarbon monoxide (C3O) is an astrochemically important molecule. It is a probe element for determining the chemical composition of gases in molecular clouds, as C3O is a major intermediate of ion-molecule reactions in the gas phase. For C3O, no collision coefficients are available in the literature. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1039/c8cp07409gDOI Listing
February 2019
1 Read

Static monocular visual cues can decrease the vestibular-evoked balance response at low frequencies.

Gait Posture 2019 Jan 29;69:162-168. Epub 2019 Jan 29.

Department of Human Physiology, University of Oregon, Eugene, OR, USA; BHD's current position is in the School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada. Electronic address:

Background: The balance system continually integrates and processes diverse sensorimotor cues to maintain upright posture. Yet, little is known about how monocular visual cues may modulate the vestibular control of standing balance.

Research Question: To determine how visual cues, specifically monocular vision, modulate the vestibular-evoked myogenic and whole-body balance response. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.gaitpost.2019.01.039DOI Listing
January 2019
1 Read

Computer-Aided Facial Reconstruction of "Mary-Magdalene" Relics Following Hair and Skull Analyses.

Clin Med Insights Ear Nose Throat 2019 14;12:1179550618821933. Epub 2019 Jan 14.

UVSQ (DANTE Laboratory EA 4498), UFR of Health Sciences, Montigny-Le-Bretonneux, France.

The supposed relics of "Mary-Magdalene" are preserved in Provence (France) in an ancient tradition. They consist of a dry skull and a lock of hair. For the first time, they were officially subjected to an extensive medico-surgical examination by photogrammetry, high-magnification binocular lenses, scanning electron microscope, and energy-dispersive X-ray elemental analysis, to propose a full computer-aided facial reconstruction. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/1179550618821933DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6343449PMC
January 2019
1 Read

Binocular Eye Movements are Adapted to the Natural Environment.

J Neurosci 2019 Feb 7. Epub 2019 Feb 7.

Vision Science Program, School of Optometry University of California, Berkeley 360 Minor Hall, Berkeley CA, 94720, USA.

Humans and many animals make frequent saccades requiring coordinated movements of the eyes. When landing on the new fixation point, the eyes must converge accurately or double images will be perceived. We asked whether the visual system uses statistical regularities in the natural environment to aid eye alignment at the end of saccades. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1523/JNEUROSCI.2591-18.2018DOI Listing
February 2019

A high precision 3D reconstruction method for bend tube axis based on binocular stereo vision.

Opt Express 2019 Feb;27(3):2292-2304

Previous stereo-vision based methods for measuring bent tube axis usually approximate the centerlines of image contours as the axis projection, inevitably resulting in reconstruction errors. This phenomenon is more significant as the tube diameter increases. In this paper, a perspective projection model for any cross section of bent tube was established. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1364/OE.27.002292DOI Listing
February 2019

Saturn and its Rings: Four Centuries of Imperfect Amodal Completion.

Authors:
Sergio Roncato

Iperception 2019 Jan-Feb;10(1):2041669518822084. Epub 2019 Jan 21.

Dipartimento di Psicologia Generale, Università di Padova, Italy.

The planet Saturn is a familiar image for us, but it presents perceptual peculiarities that impeded the discovery of its structure and which can still be misleading today. Saturn appears to be surrounded by rings which hide it to a certain extent and then continue behind the outline of the planet. What we perceive is the result of a double amodal completion in which the planetary globe and the rings exchange the roles of occluding and occluded surface. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/2041669518822084DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6350149PMC
January 2019

Functional significance of stereopsis in professional table tennis players.

J Sports Med Phys Fitness 2019 Feb 5. Epub 2019 Feb 5.

Section, Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China -

Background: Stereopsis is the most important part of depth perception, especially in athletic population. At present, there are few studies on how to comprehensively evaluate athletes' stereoscopic function and how the impairment of stereoscopic function affects sports performance.

Methods: 22 professional table tennis players from Si-Chuan Province Team were recruited as player group and 23 age-matched students were recruited as the controls. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.23736/S0022-4707.19.09300-9DOI Listing
February 2019

Hole superiority effect with 3D figures formed by binocular disparity.

J Vis 2019 Feb;19(2)

CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai, China.

The global-first theory of topological perception claims that topological perception is prior to the perception of local features (e.g., Chen, 1982, 2005). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1167/19.2.2DOI Listing
February 2019
1 Read

Induced vergence-accommodation conflict reduces cognitive performance in the Stroop test.

Sci Rep 2019 Feb 4;9(1):1247. Epub 2019 Feb 4.

IRIS Group, Physiopathologie de la Vision et Motricité Binoculaire CNRS FR3636, Université Paris Descartes, Paris, France.

Interaction mechanisms between cognition and binocular motor control in reading saccades remain unclear. In this study we examine objectively saccades and fixations parameters during the Stroop test, involving three different levels of cognitive demand (reading, color denomination and interference). In addition, we experimentally induce accommodation and vergence conflicts during the different tasks. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41598-018-37778-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6361994PMC
February 2019
1 Read

Maculopathy from an accidental exposure to welding arc.

BMJ Case Rep 2019 Feb 3;12(2). Epub 2019 Feb 3.

Department of Preventive Medicine, College of Medicine, Seoul National University, Seoul, South Korea.

Welding light can cause photic retinal injury. We report binocular maculopathy induced by a brief exposure to electric arc welding light in a patient who could not equipped with protective device because of narrow space. A 47-year-old man performed electric arc welding for approximately 10-15 min without wearing protective device because of narrow space and subsequently experienced eye discomfort and decreased visual acuity. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1136/bcr-2018-227677DOI Listing
February 2019

Applications and Prospects of Agricultural Unmanned Aerial Vehicle Obstacle Avoidance Technology in China.

Sensors (Basel) 2019 Feb 3;19(3). Epub 2019 Feb 3.

College of Engineering, South China Agricultural University, Guangzhou 510642, China.

With the steady progress of China's agricultural modernization, the demand for agricultural machinery for production is widely growing. Agricultural unmanned aerial vehicles (UAVs) are becoming a new force in the field of precision agricultural aviation in China. In those agricultural areas where ground-based machinery have difficulties in executing farming operations, agricultural UAVs have shown obvious advantages. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/s19030642DOI Listing
February 2019

Real-Time Monitoring of the Position and Orientation of a Radio Telescope Sub-Reflector with Fiber Bragg Grating Sensors.

Sensors (Basel) 2019 Feb 1;19(3). Epub 2019 Feb 1.

Key Laboratory of Electronic Equipment Structure Design of Ministry of Education, Xidian University, Xi'an 710071, China.

Environmental loads linked with pointing errors, such as gravity, thermal gradients, and wind disturbances, are a serious concern for large-aperture high-frequency radio telescopes. For the purpose of maintaining the pointing performance of a telescope, a contact measurement scheme is proposed on basis of fiber Bragg grating (FBG) strain sensors that can monitor the sub-reflector shift in real time as the input data of the adjustment system. In this scheme, the relationship between the in situ strain measurement and the deformation of the supporting structure, which is the main cause of sub-reflector shift, is deduced using the inverse Finite Element Method (iFEM). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/s19030619DOI Listing
February 2019

Ultrasonography Monitoring of Optic Nerve Sheath Diameter and Retinal Vessels in Patients with Cerebral Hemorrhage.

J Neuroimaging 2019 Feb 3. Epub 2019 Feb 3.

Department of Neurology, Saarland University Medical Center, Homburg, Germany.

Background And Purpose: Evaluation of the diagnostic accuracy of optic nerve sheath diameter (ONSD) and Doppler indices of central retinal arteries and veins for the detection of increased intracranial pressure (ICP) in intracerebral hemorrhage (ICH) and of the usefulness of a second assessment of these variables in the monitoring of ICH.

Methods: A total of 46 acute ICH patients with (group 1, n = 25) and without (group 2, n = 21) clinical and radiological computed tomography signs of raised ICP and 40 healthy controls were recruited. The median binocular ONSD and Doppler indices of retinal vessels including resistive index (RI) and retinal venous pulsation (RVP) were compared among groups, both at admission and later during ICH monitoring. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/jon.12604DOI Listing
February 2019
1 Read

[Brown's syndrome].

J Fr Ophtalmol 2019 Feb 31;42(2):189-197. Epub 2019 Jan 31.

Service d'ophtalmologie, CHU Secteur Nord Marseille, chemin des Bourrély, 13015 Marseille, France.

Brown's syndrome is related to an abnormality of the superior oblique muscle: it is manifested by an oculomotor disorder with active and passive limitation of elevation in adduction, the field of action of the inferior oblique muscle. The origin is congenital or acquired secondary to multiple causes - inflammatory-infectious, traumatic or iatrogenic. The clinical and paraclinical signs are suggestive. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jfo.2018.06.012DOI Listing
February 2019
1 Read

Revealing a retinal facilitatory effect with the multifocal ERG.

Doc Ophthalmol 2019 Jan 31. Epub 2019 Jan 31.

Department of Ophthalmology, Faculty of Medicine, Research Institute of the McGill University Health Centre, 1001 Decarie BOULEVARD, Glen Site, Block E, Room EM03238, Montreal, QC, H4A 3J1, Canada.

Purpose: We have previously shown that the amplitude of the mfERG response obtained to a single (large) hexagon is significantly smaller than that obtained when summating all the mfERG responses evoked to an array of 7-61 hexagons covering the same retinal area. The purpose of this study was to confirm our initial findings in normal subjects of different ages and in selected patients.

Methods: Binocular mfERGs (1, 7, 19, 37 and 61 hexagon arrays; Espion V6. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10633-019-09674-xDOI Listing
January 2019

The treatment of amblyopia: current practice and emerging trends.

Graefes Arch Clin Exp Ophthalmol 2019 Jan 31. Epub 2019 Jan 31.

Department of Neuroscience, Psychology and Behaviour, Robert Kilpatrick Clinical Sciences Building, Leicester Royal Infirmary, University of Leicester, Leicester, UK.

Purpose: The purpose of this review is to provide an update on current management and recent research for amblyopia treatment. Part I will review patching, atropine penalization, and pharmacological treatments. Part II will focus on perceptual learning, video gaming, and binocular dichoptic approaches. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00417-019-04254-wDOI Listing
January 2019

Latanoprost could exacerbate the progression of presbyopia.

PLoS One 2019 31;14(1):e0211631. Epub 2019 Jan 31.

Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.

Purpose: Prostaglandin analogues (PG) reduce intra-ocular pressure by enhancing uveoscleral flow at the ciliary body, which controls accommodation via the ciliary muscle. We investigated the effect of PG on accommodation and presbyopia progression in glaucoma patients.

Methods: We conducted a clinic-based, retrospective, cross-sectional study. Read More

View Article

Download full-text PDF

Source
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0211631PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6355011PMC
January 2019
12 Reads

Frequency of alpha oscillation predicts individual differences in perceptual stability during binocular rivalry.

Hum Brain Mapp 2019 Jan 31. Epub 2019 Jan 31.

Department of Psychology, University of Minnesota Twin Cities, Minneapolis, Minnesota.

When ambiguous visual stimuli have multiple interpretations, human perception can alternate between them, producing perceptual multistability. There is a large variation between individuals in how long stable percepts endure, on average, between switches, but the underlying neural basis of this individual difference in perceptual dynamics remains obscure. Here, we show that in one widely studied multistable paradigm-binocular rivalry-perceptual stability in individuals is predicted by the frequency of their neural oscillations within the alpha range (7-13 Hz). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/hbm.24533DOI Listing
January 2019
1 Read

Comparison of objective accommodation in phakic and pseudophakic eyes between age groups.

Graefes Arch Clin Exp Ophthalmol 2019 Jan 30. Epub 2019 Jan 30.

The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.

Purpose: To compare objective accommodation of phakic and pseudophakic eyes between two different age groups.

Methods: Eighty-three eyes (83 participants aged ≥ 40 years) with a visual acuity of 20/25 or better, and refractive error < spherical - 1.0 diopters (D) and cylindrical 1. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00417-019-04249-7DOI Listing
January 2019

Objective Verification of Physiologic Changes during Accommodation under Binocular, Monocular, and Pinhole Conditions.

J Korean Med Sci 2019 Jan 21;34(4):e32. Epub 2019 Jan 21.

Department of Ophthalmology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea.

Background: To objectively investigate accommodative response to various refractive stimuli in subjects with normal accommodation.

Methods: This prospective, non-randomized clinical trial included 64 eyes of 32 subjects with a mean spherical equivalent -1.4 diopters (D). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3346/jkms.2019.34.e32DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6345635PMC
January 2019

[Identification and pathogenicity prediction of a novel GLB1 variant c.101T>C (p.Ile34Thr) in an infant with GM1 gangliosidosis].

Zhongguo Dang Dai Er Ke Za Zhi 2019 Jan;21(1):71-76

Department of Pediatrics, First Affiliated Hospital of Jinan University, Guangzhou 510630, China.

GM1 gangliosidosis is an autosomal recessive disorder caused by galactosidase beta1 (GLB1) gene variants which affect the activity of β-galactosidase (GLB). GLB dysfunction causes abnormalities in the degradation of GM1 and its accumulation in lysosome. This article reports the clinical and genetic features of a child with GM1 gangliosidosis. Read More

View Article

Download full-text PDF

Source
January 2019

The Incidence of Binocular Visual Impairment and Blindness in Children with Bilateral Retinoblastoma.

Ocul Oncol Pathol 2019 Jan 19;5(1):1-7. Epub 2018 Jun 19.

The Royal London Hospital, Barts Health NHS Trust, London, United Kingdom.

Purpose: The study aimed to assess the incidence of and risk factors leading to visual impairment and legal blindness in children with retinoblastoma.

Procedures: This is a single-center, retrospective case series of all patients with bilateral retinoblastoma presenting from 2010 to 2014.

Results: A total of 44 patients were included in the study. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1159/000489313DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6341332PMC
January 2019
1 Read

Modified Faden operation -A new surgical technique.

Indian J Ophthalmol 2019 Feb;67(2):264-266

Dr. Agarwal's Eye Hospital, #19, Cathedral Road, Chennai, Tamil Nadu, India.

Faden operation was first described in 1912. It weakens the muscle in its field of action without much slackening and alteration in the primary position. When combined with recession the weakening effect is more. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.4103/ijo.IJO_952_18DOI Listing
February 2019
5 Reads

Ocular and visual discomfort associated with smartphones, tablets and computers: what we do and do not know.

Clin Exp Optom 2019 Jan 21. Epub 2019 Jan 21.

School of Optometry and Vision Science, The University of New South Wales, Sydney, New South Wales, Australia.

Smartphone and tablet use in Australia and worldwide is reaching saturation levels and associated visual and ocular discomfort such as headaches, eyestrain, dry eyes and sore eyes are widespread. This review synthesises the available literature and considers these symptoms in the context of a binocular vision and/or ocular surface aetiology. Eye discomfort with smartphones and tablets is discussed alongside similar symptoms reported with desktop computer use. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/cxo.12851DOI Listing
January 2019
2 Reads

Binocular Modulation of Monocular V1 Neurons.

Curr Biol 2019 Feb 17;29(3):381-391.e4. Epub 2019 Jan 17.

Department of Psychology, College of Arts and Science, Vanderbilt Vision Research Center, Center for Integrative and Cognitive Neuroscience, Vanderbilt University, 2201 West End Avenue, Nashville, TN 37203, USA. Electronic address:

In humans and other primates, sensory signals from each eye remain separated until they arrive in the primary visual cortex (V1), but their exact meeting point is unknown. In V1, some neurons respond to stimulation of only one eye (monocular neurons), while most neurons respond to stimulation of either eye (binocular neurons). The main input layers of V1 contain most of the monocular neurons while binocular neurons dominate the layers above and below. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.cub.2018.12.004DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6363852PMC
February 2019
1 Read

Deficient vergence prism adaptation in subjects with decompensated heterophoria.

PLoS One 2019 18;14(1):e0211039. Epub 2019 Jan 18.

Laboratory of Vision Science and Optometry, Faculty of Physics, Adam Mickiewicz University, Poznań, Poland.

Vergence prism adaptability was evaluated in subjects with high symptomatic and asymptomatic heterophoria and compared to individuals with a heterophoria within normal range (the control group). A computer haploscope was used to measure phoria values and changes in the eye position after introducing 6 prism diopters base out in front of the right eye. Phoria values were measured with a nonius paradigm every minute for a period of 10 minutes during adaptation. Read More

View Article

Download full-text PDF

Source
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0211039PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6338415PMC
January 2019
5 Reads

Vision-related quality of life according to location of visual field loss in patients with glaucoma.

Acta Ophthalmol 2019 Jan 17. Epub 2019 Jan 17.

Department of Ophthalmology, Chungnam National University Hospital, Deajeon, Korea.

Purpose: To assess influence of the location of visual field (VF) loss on vision-related quality of life (VRQOL) in patients with glaucoma.

Methods: We included 826 patients with primary open-angle glaucoma (POAG) enrolled in the prospectively designed Life Quality of Glaucoma Patients Who Underwent Treatment (LIGHT) study organized by the Korean Glaucoma Society. We divided the integrated binocular visual field (IVF) into four regions and evaluated the associations between Rasch-analysed 25-item National Eye Institute Visual Function Questionnaire (NEI VFQ-25) and location of the IVF using univariate and hierarchical multivariable linear regression. Read More

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1111/aos.14020
Publisher Site
http://dx.doi.org/10.1111/aos.14020DOI Listing
January 2019
4 Reads
2.844 Impact Factor

Virtual View Generation Based on 3D-Dense-Attentive GAN Networks.

Authors:
Junwei Fu Jun Liang

Sensors (Basel) 2019 Jan 16;19(2). Epub 2019 Jan 16.

State Key Lab of Industrial Control Technology, Zhejiang University, Hangzhou 310027, China.

A binocular vision system is a common perception component of an intelligent vehicle. Benefiting from the biomimetic structure, the system is simple and effective. Which are extremely snesitive on external factors, especially missing vision signals. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/s19020344DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6358985PMC
January 2019
1 Read