11,658 results match your criteria Binocular vision & strabology quarterly Simms-Romano's[Journal]


Zone of Clear Single Binocular Vision in Myopic Orthokeratology.

Eye Contact Lens 2019 Apr 15. Epub 2019 Apr 15.

School of Optometry and Vision Science (K.G., P.L.H., K.L.S.), Faculty of Health, Institute of Health and Biomedical Innovation, Queensland University of Technology, Queensland, Australia; and School of Optometry and Vision Science (P.G.), Faculty of Science, University of New South Wales, New South Wales, Australia.

Purpose: To examine the zone of clear single binocular vision (ZCSBV) in myopic children and young adults after 12 months of orthokeratology (OK) wear, in comparison with single-vision soft contact lens (SCL) wear.

Methods: Twelve children (8-16 years) and 8 adults (18-29 years) were assessed with a series of near-point binocular vision tests when myopia was corrected using single-vision SCLs and again after 1 and 12 months of OK wear, and axial length was measured. The ZCSBV was constructed for baseline SCL wear and after 12 months of OK wear. Read More

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http://dx.doi.org/10.1097/ICL.0000000000000614DOI Listing
April 2019
1 Read

Comparative evaluation of the efficacy of using monocular, binocular and panoramic night vision goggles in successful venous access in darkness.

J R Army Med Corps 2019 Apr 20. Epub 2019 Apr 20.

Emergency Department, Health Sciences University, Gulhane Research and Training Hospital, Ankara, Turkey.

Introduction: The use of night vision goggles (NVGs) by medical staff operating in active combat areas may present a tactical advantage in maintaining unit concealment. This study seeks to assess the degree to which NVG use improves speed and ease of intravenous access in comparison to no NVG use, and which NVG system (monocular, binocular or panoramic) provides the best conditions for the clinician.

Methods: Cannulation was carried out using both eyes open (BEO) and one eye open (OEO) in well-lit conditions to establish a baseline measurement. Read More

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http://jramc.bmj.com/lookup/doi/10.1136/jramc-2019-001173
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http://dx.doi.org/10.1136/jramc-2019-001173DOI Listing
April 2019
1 Read

Individual Differences in Continuous Flash Suppression: Potency and Linkages to Binocular Rivalry Dynamics.

Vision Res 2019 Apr 16. Epub 2019 Apr 16.

Department of Psychology, Korea University, Seoul 02842, Korea.

Binocular rivalry (BR) and continuous flash suppression (CFS) are compelling psychophysical phenomena involving interocular suppression. Using an individual differences approach we assessed whether interocular suppression induced by CFS is predictable in potency from characteristics of BR that are plausibly governed by interocular inhibition. We found large individual differences in BR dynamics and, in addition, in the strength of CFS as gauged by the incidence and durations of breakthroughs in CFS during an extended viewing periods. Read More

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http://dx.doi.org/10.1016/j.visres.2019.04.003DOI Listing

The Binocular Balance at High Spatial Frequencies as Revealed by the Binocular Orientation Combination Task.

Front Hum Neurosci 2019 2;13:106. Epub 2019 Apr 2.

McGill Vision Research, Department of Ophthalmology, McGill University, Montreal, QC, Canada.

How to precisely quantify the binocular eye balance (i.e., the contribution that each eye makes to the binocular percept) across a range of spatial frequencies using a binocular combination task, is an important issue in both clinical and basic research. Read More

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http://dx.doi.org/10.3389/fnhum.2019.00106DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6454030PMC

Longitudinal Clinical Follow-up and Genetic Spectrum of Patients With Rod-Cone Dystrophy Associated With Mutations in PDE6A and PDE6B.

JAMA Ophthalmol 2019 Apr 18. Epub 2019 Apr 18.

Sorbonne Université, Institut national de la santé et de la recherche médicale, Centre national de la recherche scientifique, Institut de la Vision, Paris, France.

Importance: A precise phenotypic characterization of retinal dystrophies is needed for disease modeling as a basis for future therapeutic interventions.

Objective: To compare genotype, phenotype, and structural changes in patients with rod-cone dystrophy (RCD) associated with mutations in PDE6A or PDE6B.

Design, Setting, And Participants: In a retrospective cohort study conducted in Paris, France, from January 2007 to September 2017, 54 patients from a cohort of 1095 index patients with RCD underwent clinical examination, including personal and familial history, best-corrected visual acuity (BCVA), color vision, slitlamp examination, full-field electroretinography, kinetic visual fields (VFs), retinophotography, optical coherence tomography, near-infrared fundus autofluorescence, and short-wavelength fundus autofluorescence imaging. Read More

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http://dx.doi.org/10.1001/jamaophthalmol.2018.6367DOI Listing
April 2019
1 Read

Surgical management of intermittent exotropia: do we have an answer for all?

BMJ Open Ophthalmol 2019 8;4(1):e000243. Epub 2019 Mar 8.

Child Sight Institute, Jasti V Ramanamma Children's Eye Care Centre, L V Prasad Eye Institute, Hyderabad, India.

Intermittent exotropia (X(T)) is one of the most common form of strabismus with surgery being the mainstay of treatment. The main goal of surgery is to preserve binocular vision and stereopsis and to prevent its further loss. The decision to operate is mainly based on four aspects: increasing angle of exodeviation, deteriorating control of X(T), decrease in stereopsis for near or distance and quality of life. Read More

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http://dx.doi.org/10.1136/bmjophth-2018-000243DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6440598PMC

Standard Clinical Outcomes With a New Low Addition Trifocal Intraocular Lens.

J Refract Surg 2019 Apr;35(4):214-221

Purpose: To evaluate the standard clinical outcomes, defocus curves, and satisfaction obtained with a new diffractive low addition trifocal intraocular lens (IOL).

Methods: Thirty patients who were implanted with the Versario Multifocal 3F IOL (Valeant Med Sp.zo. Read More

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http://dx.doi.org/10.3928/1081597X-20190306-01DOI Listing
April 2019
3.468 Impact Factor

Contextual effects on binocular matching are evident in primary visual cortex.

Vision Res 2019 Apr 16;159:76-85. Epub 2019 Apr 16.

Department of Psychology, University of Cambridge, UK.

Global context can dramatically influence local visual perception. This phenomenon is well-documented for monocular features, e.g. Read More

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http://dx.doi.org/10.1016/j.visres.2019.04.001DOI Listing
April 2019
4 Reads

A Fast Binocular Localisation Method for AUV Docking.

Sensors (Basel) 2019 Apr 11;19(7). Epub 2019 Apr 11.

State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China.

Docking technology plays a critical role in realising the long-time operation of autonomous underwater vehicles (AUVs). In this study, a binocular localisation method for AUV docking is presented. An adaptively weighted OTSU method is developed for feature extraction. Read More

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https://www.mdpi.com/1424-8220/19/7/1735
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http://dx.doi.org/10.3390/s19071735DOI Listing
April 2019
2 Reads

Recurrent abducens nerve palsy and hypophosphatasia syndrome.

BMJ Case Rep 2019 Apr 11;12(4). Epub 2019 Apr 11.

Department of Internal Medicine, Royal Perth Hospital, Perth, Australian Capital Territory, Australia.

A 47-year-old woman presented with six episodes of horizontal binocular double vision over a 2-year period. CT imaging was significant for extensive dural calcification in the spine and calcification of the skull base, likely involving Dorello's canal. Biochemical testing revealed a persistently low alkaline phosphatase level. Read More

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http://casereports.bmj.com/lookup/doi/10.1136/bcr-2018-22689
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http://dx.doi.org/10.1136/bcr-2018-226895DOI Listing
April 2019
2 Reads

Disruptive coloration and binocular disparity: breaking camouflage.

Proc Biol Sci 2019 Feb;286(1896):20182045

Department of Psychology, University of Southampton , Southampton SO17 1BJ , UK.

Many species employ camouflage to disguise their true shape and avoid detection or recognition. Disruptive coloration is a form of camouflage in which high-contrast patterns obscure internal features or break up an animal's outline. In particular, edge enhancement creates illusory, or 'fake' depth edges within the animal's body. Read More

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http://dx.doi.org/10.1098/rspb.2018.2045DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6408597PMC
February 2019

Binocular non-stereoscopic cues can deceive clinical tests of stereopsis.

Sci Rep 2019 Apr 8;9(1):5789. Epub 2019 Apr 8.

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

Stereoscopic vision plays a critical role in visual perception; however, it is difficult to assess. In clinical settings, stereoacuity is assessed with clinical stereotests. Observers can use monocular cues to deceive some of the most common stereotests, such as the Titmus test. Read More

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http://dx.doi.org/10.1038/s41598-019-42149-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6453951PMC
April 2019
1 Read

Binocular vision and fixational eye movements.

J Vis 2019 Apr;19(4)

School of Optometry and Vision Science, University of Waterloo, Waterloo, Canada.

The aim of this study was to assess the relationship between binocular vision and fixation stability (FS). Across three experiments, we investigated (a) whether fixation was more stable during binocular versus monocular viewing across a range of stimulus contrasts in normal observers (n = 11), (b) whether binocular rivalry affected FS in normal observers (n = 14), and (c) whether FS was affected by interocular contrast differences in normal observers (n = 8) and patients with anisometropic amblyopia (n = 5). FS was quantified using global bivariate contour ellipse area, and microsaccades were detected using an unsupervised cluster-detection method. Read More

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http://dx.doi.org/10.1167/19.4.9DOI Listing
April 2019
3 Reads

Profile measurement adopting binocular active vision with normalization object of vector orthogonality.

Sci Rep 2019 Apr 2;9(1):5505. Epub 2019 Apr 2.

School of Transportation, Nanling Campus, Jilin University, Renmin Str. 5988#, Changchun, China.

Active-vision-based measurement plays an important role in the profile inspection study. The binocular vision, a passive vision, is employed in the active vision system to contribute the benefits of them. The laser plane is calibrated by two 2D targets without texture initially. Read More

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http://dx.doi.org/10.1038/s41598-019-41341-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6445114PMC

Flexible Three-Dimensional Reconstruction via Structured-Light-based Visual Positioning and Global Optimization.

Sensors (Basel) 2019 Apr 1;19(7). Epub 2019 Apr 1.

MOEMS Education Ministry Key Laboratory, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072, China.

Three-dimensional (3D) reconstruction using line structured light vision system commonly cooperates with motion restraint devices, such as parallel guide rail push-broom devices. In this study, we propose a visual positioning method to eliminate the motion constraint. An extended orthogonal iteration algorithm for visual positioning is proposed to obtain the precise position of the line structured light binocular camera system during movement. Read More

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http://dx.doi.org/10.3390/s19071583DOI Listing
April 2019
1 Read

Effects of Hunger on Visual Perception in Binocular Rivalry.

Front Psychol 2019 12;10:418. Epub 2019 Mar 12.

Key Laboratory of Brain Functional Genomics (MOE and STCSM), Institute of Cognitive Neuroscience, School of Psychology and Cognitive Science, East China Normal University, Shanghai, China.

The effect of hunger on visual perception is largely absent from contemporary vision science. Using a well-established visual phenomenon termed binocular rivalry, this study was carried out to investigate the effects of hunger on visual perception. A within-subject design was applied in which participants attended two sessions before and after their lunch or dinner, i. Read More

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https://www.frontiersin.org/article/10.3389/fpsyg.2019.00418
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http://dx.doi.org/10.3389/fpsyg.2019.00418DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6423071PMC
March 2019
5 Reads

Digital Eye Strain in a Population of Young Subjects.

Cesk Slov Oftalmol 2019 ;74(4):154-157

The main goal of our study was to prove short-term objective influence of near addition and relieving prism on accommodative and vergence facility in group of young healthy persons. Further, we wanted to prove objective and subjective difference between two types of soft contact lenses during working with digital device. We had in total 37 subjects in our study. Read More

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http://dx.doi.org/10.31348/2018/1/5-4-2018DOI Listing
January 2019

Acquired Pediatric Brown Syndrome Secondary to Sinusitis.

J Pediatr Ophthalmol Strabismus 2019 Mar 25;56:e17-e19. Epub 2019 Mar 25.

Acquired pediatric Brown syndrome is rarely associated with sinusitis. Children may present with diplopia, elevation deficiency in adduction, and a head tilt or chin-up position. Magnetic resonance imaging can confirm the diagnosis. Read More

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http://dx.doi.org/10.3928/01913913-20190213-01DOI Listing
March 2019
1 Read

Evidence for a central component in adaptation to chromatic light.

Vision Res 2019 Apr 9;159:42-47. Epub 2019 Apr 9.

Joshibi University of Art and Design, 1900, Asamizodai, Minami-ku, Sagamihara, Kanagawa 252-8538, Japan. Electronic address:

Adaptation to environmental light allows our visual system to compensate for dynamic changes in the visual environment for avoiding everyday hazards (e.g., misreading traffic lights) and for accurate reaching. Read More

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http://dx.doi.org/10.1016/j.visres.2019.02.015DOI Listing

Torsional Changes After Vertical Transposition of Horizontal Recti in V-pattern Exotropia Without Oblique Dysfunction.

J Pediatr Ophthalmol Strabismus 2019 Mar;56(2):107-115

Purpose: To evaluate pattern collapse and torsional changes following vertical transposition of horizontal recti in patients with V-pattern exotropia and no oblique dysfunction.

Methods: A prospective study was performed on patients who had V-pattern exotropia and no oblique dysfunction. Lateral recti were transposed upward half-tendon width in V-pattern of 25 prism diopters (PD) or less (n = 14) and full-tendon width in V-pattern of greater than 25 PD (n = 10). Read More

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http://dx.doi.org/10.3928/01913913-20190205-03DOI Listing

Outcomes of Medial Rectus Recession With Adjustable Suture in Acute Concomitant Esotropia of Adulthood.

J Pediatr Ophthalmol Strabismus 2019 Mar;56(2):101-106

Purpose: To review and analyze the surgical outcomes of bilateral medial rectus recession with adjustable suture in acute concomitant esotropia of adulthood (ACEA).

Methods: The charts of all adults diagnosed as having ACEA between 2004 and 2017 were reviewed. Best corrected visual acuity, refractive error, ocular alignment measured in prism diopters (PD), and stereopsis were examined at presentation, 1 day postoperatively, and final follow-up visit (median: 10 months; range: 4 to 144 months). Read More

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http://dx.doi.org/10.3928/01913913-20190206-01DOI Listing

Strabismus surgery in the setting of glaucoma drainage devices in the pediatric population.

J AAPOS 2019 Mar 15. Epub 2019 Mar 15.

Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina. Electronic address:

Purpose: To evaluate outcomes of strabismus surgery performed subequent to or concomitant with glaucoma drainage device (GDD) implantation for refractory childhood glaucoma.

Methods: The medical records of children who underwent strabismus surgery after or concomitantly with GDD implantation were reviewed retrospectively. Included were surgeries with motility and alignment data measured preoperatively and ≥3 months postoperatively. Read More

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http://dx.doi.org/10.1016/j.jaapos.2018.12.006DOI Listing

Optimal near and distance stereoacuity after binocular implantation of extended range of vision intraocular lenses.

J Cataract Refract Surg 2019 Mar 12. Epub 2019 Mar 12.

Cornea, Cataract & Refractive Surgery Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.

Purpose: To evaluate stereopsis and visual quality after bilateral implantation of extended range of vision intraocular lenses (ERV IOLs).

Setting: R.P. Read More

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http://dx.doi.org/10.1016/j.jcrs.2018.12.024DOI Listing

Progress in virtual reality and augmented reality based on holographic display.

Appl Opt 2019 Feb;58(5):A74-A81

The past, present, and future industry prospects of virtual reality (VR) and augmented reality (AR) are presented. The future of VR/AR technology based on holographic display is predicted by analogy with the VR/AR based on binocular vision display and light field display. The investigations on holographic display that can be used in VR/AR are reviewed. Read More

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http://dx.doi.org/10.1364/AO.58.000A74DOI Listing
February 2019

Clinical Efficacy of Pinhole Soft Contact Lenses for the Correction of Presbyopia.

Semin Ophthalmol 2019 13;34(2):106-114. Epub 2019 Mar 13.

a The Institute of Vision Research, Department of Ophthalmology , Yonsei University College of Medicine , Seoul , Republic of Korea.

We investigated the clinical efficacy of pinhole soft contact lenses for presbyopia correction. Twenty participants with presbyopia wore pinhole soft contact lenses in the non-dominant eye for 2 weeks. Manifest refraction, Goldmann binocular visual field tests, contrast sensitivity tests, and biomicroscopic examinations were performed along with evaluations of questionnaire responses and the binocular corrected distance visual acuity (CDVA), distance-corrected near visual acuity (DCNVA), distance-corrected intermediate visual acuity (DCIVA), and depth of focus, both before and after 2 weeks of lens wear. Read More

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http://dx.doi.org/10.1080/08820538.2019.1586966DOI Listing
April 2019
1 Read

Some binocular advantages for planning reach, but not grasp, components of prehension.

Exp Brain Res 2019 May 8;237(5):1239-1255. Epub 2019 Mar 8.

Applied Vision Research Centre, City, University of London, Northampton Square, London, EC1V 0HB, UK.

Proficient (fast, accurate, precise) hand actions for reaching-to-grasp 3D objects are known to benefit significantly from the use of binocular vision compared to one eye alone. We examined whether these binocular advantages derive from increased reliability in encoding the goal object's properties for feedforward planning of prehension movements or from enhanced feedback mediating their online control. Adult participants reached for, precision grasped and lifted cylindrical table-top objects (two sizes, 2 distances) using binocular vision or only their dominant/sighting eye or their non-dominant eye to program and fully execute their movements or using each of the three viewing conditions only to plan their reach-to-grasp during a 1 s preview, with vision occluded just before movement onset. Read More

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http://link.springer.com/10.1007/s00221-019-05503-4
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http://dx.doi.org/10.1007/s00221-019-05503-4DOI Listing
May 2019
3 Reads

A Method for Broccoli Seedling Recognition in Natural Environment Based on Binocular Stereo Vision and Gaussian Mixture Model.

Sensors (Basel) 2019 Mar 6;19(5). Epub 2019 Mar 6.

College of Engineering, China Agricultural University, Qinghua Rd.(E) No.17, Haidian District, Beijing 100083, China.

Illumination in the natural environment is uncontrollable, and the field background is complex and changeable which all leads to the poor quality of broccoli seedling images. The colors of weeds and broccoli seedlings are close, especially under weedy conditions. The factors above have a large influence on the stability, velocity and accuracy of broccoli seedling recognition based on traditional 2D image processing technologies. Read More

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http://dx.doi.org/10.3390/s19051132DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427649PMC
March 2019
3 Reads
2.245 Impact Factor

Dual-Stream Interactive Networks for No-Reference Stereoscopic Image Quality Assessment.

IEEE Trans Image Process 2019 Mar 5. Epub 2019 Mar 5.

The goal of objective stereoscopic image quality assessment (SIQA) is to predict the human perceptual quality of stereoscopic/3D images automatically and accurately. Compared with traditional 2D image quality assessment (2D IQA), the quality assessment of stereoscopic images is more challenging because of complex binocular vision mechanisms and multiple quality dimensions. In this paper, inspired by the hierarchical dual-stream interactive nature of the human visual system (HVS), we propose a Stereoscopic Image Quality Assessment Network (StereoQA-Net) for No-Reference stereoscopic image quality assessment (NR-SIQA). Read More

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http://dx.doi.org/10.1109/TIP.2019.2902831DOI Listing
March 2019
1 Read

ASTEROID: A New Clinical Stereotest on an Autostereo 3D Tablet.

Transl Vis Sci Technol 2019 Jan 28;8(1):25. Epub 2019 Feb 28.

Institute of Neuroscience, Newcastle University, Framlington Place, Newcastle upon Tyne, UK.

Purpose: To describe a new stereotest in the form of a game on an autostereoscopic tablet computer designed to be suitable for use in the eye clinic and present data on its reliability and the distribution of stereo thresholds in adults.

Methods: Test stimuli were four dynamic random-dot stereograms, one of which contained a disparate target. Feedback was given after each trial presentation. Read More

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http://dx.doi.org/10.1167/tvst.8.1.25DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6396686PMC
January 2019
1 Read

Preliminary Evaluation of Two Digital Image Processing Strategies for Head-Mounted Magnification for Low Vision Patients.

Transl Vis Sci Technol 2019 Jan 28;8(1):23. Epub 2019 Feb 28.

Lions Vision Research and Rehabilitation Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Purpose: In an observational clinical outcome study, we tested the effectiveness and use of the combination of two innovative approaches to magnification: a virtual bioptic telescope and a virtual projection screen, implemented with digital image processing in a head-mounted display (HMD) equipped with a high-resolution video camera and head trackers.

Methods: We recruited 30 participants with best-corrected visual acuity <20/100 in the better-seeing eye and bilateral central scotomas. Participants were trained on the HMD system, then completed a 7- to 10-day in-home trial. Read More

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http://dx.doi.org/10.1167/tvst.8.1.23DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6396685PMC
January 2019
5 Reads

Using micro-CT techniques to explore the role of sex and hair in the functional morphology of bumblebee (Bombus terrestris) ocelli.

Vision Res 2019 Mar 6;158:100-108. Epub 2019 Mar 6.

Department of Biology, Lund University, Lund, Sweden; Department of Zoology, Stockholm University, Stockholm, Sweden. Electronic address:

Many insects have triplets of camera type eyes, called ocelli, whose function remains unclear for most species. Here, we investigate the ocelli of the bumblebee, Bombus terrestris, using reconstructed 3D data from X-ray microtomography scans combined with computational ray-tracing simulations. This method enables us, not only to predict the visual fields of the ocelli, but to explore for the first time the effect that hair has on them as well as the difference between worker female and male ocelli. Read More

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http://dx.doi.org/10.1016/j.visres.2019.02.008DOI Listing
March 2019
4 Reads

Efficacy of Smartphone-based Exercises in Conjunction with Modified Glasses Prescription in the Treatment of Convergence Insufficiency and Fusion Weakness.

J Binocul Vis Ocul Motil 2019 Jan-Mar;69(1):30-33. Epub 2019 Mar 1.

c Department of Ophthalmology , SMS Medical College , Jaipur , India.

Purpose: To determine the efficacy of Smartphone-based exercises in conjunction with modified glasses prescription in the treatment of convergence insufficiency and fusion weakness.

Methods: A total of 150 patients using glasses and having asthenopia between 15 and 30 years of age were subjected to thorough eye examination including binocular vision testing and refraction. Of them 26 individuals were found to have convergence insufficiency with fusion weakness and exophoria >6 pd. Read More

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http://dx.doi.org/10.1080/2576117X.2019.1578594DOI Listing
March 2019
1 Read

Measurement of fusional vergence: a systematic review.

Strabismus 2019 Mar 1:1-26. Epub 2019 Mar 1.

b Department of Health Services Research , University of Liverpool , Liverpool.

Background: Fusional amplitudes are important for clinical practice in diagnosing and managing binocular vision anomalies. Several measurement methods can be used to assess fusional amplitudes. However, those methods are not interchangeable, and measurement repeatability has been questioned. Read More

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http://dx.doi.org/10.1080/09273972.2019.1583675DOI Listing
March 2019
4 Reads

Adaptation reveals multi-stage coding of visual duration.

Sci Rep 2019 Feb 28;9(1):3016. Epub 2019 Feb 28.

Visual Neuroscience Group, School of Psychology, The University of Nottingham, Nottingham, NG7 2RD, UK.

In conflict with historically dominant models of time perception, recent evidence suggests that the encoding of our environment's temporal properties may not require a separate class of neurons whose raison d'être is the dedicated processing of temporal information. If true, it follows that temporal processing should be imbued with the known selectivity found within non-temporal neurons. In the current study, we tested this hypothesis for the processing of a poorly understood stimulus parameter: visual event duration. Read More

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http://dx.doi.org/10.1038/s41598-018-37614-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395619PMC
February 2019
2 Reads

Bumblebee visual allometry results in locally improved resolution and globally improved sensitivity.

Elife 2019 Feb 26;8. Epub 2019 Feb 26.

Department of Biology, Lund University, Lund, Sweden.

The quality of visual information that is available to an animal is limited by the size of its eyes. Differences in eye size can be observed even between closely related individuals, yet we understand little about how this affects vision. Insects are good models for exploring the effects of size on visual systems because many insect species exhibit size polymorphism. Read More

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http://dx.doi.org/10.7554/eLife.40613DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6391067PMC
February 2019
1 Read

Visual field requirements for driving in Europe: the risk of inaccurate interpretation of visual field findings when using the binocular Esterman programme.

Acta Ophthalmol 2019 Feb 22. Epub 2019 Feb 22.

Working Group on Driving and Vision Standards, Norwegian Ophthalmological Society, Oslo, Norway.

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http://dx.doi.org/10.1111/aos.14071DOI Listing
February 2019
1 Read

Conversations with Ray Guillery on albinism: linking Siamese cat visual pathway connectivity to mouse retinal development.

Eur J Neurosci 2019 Feb 23. Epub 2019 Feb 23.

Departments of Pathology and Cell Biology, Neuroscience, and Ophthalmology, Mortimer B. Zuckerman Mind Brain Behavior Institute, Columbia University, Jerome L. Greene Science Center, 3227 Broadway, Room L3-043, Quad 3C, New York, NY, 10027, USA.

In albinism of all species, perturbed melanin biosynthesis in the eye leads to foveal hypoplasia, retinal ganglion cell misrouting, and, consequently, altered binocular vision. Here, written before he died, Ray Guillery chronicles his discovery of the aberrant circuitry from eye to brain in the Siamese cat. Ray's characterization of visual pathway anomalies in this temperature sensitive mutation of tyrosinase and thus melanin synthesis in domestic cats opened the exploration of albinism and simultaneously, a genetic approach to the organization of neural circuitry. Read More

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http://dx.doi.org/10.1111/ejn.14396DOI Listing
February 2019
1 Read

Assessment of surgical outcomes of femtosecond laser-assisted in situ keratomileusis in patients with low compliance to postoperative follow-up: a retrospective observational study in a tertiary hospital in China.

BMJ Open 2019 Feb 22;8(11):e021702. Epub 2019 Feb 22.

Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China.

Objectives: Poor follow-up after femtosecond laser-assisted in situ keratomileusis (FS-LASIK) is common in general clinical practice. We aimed to assess the surgical outcomes of patients with poor compliance to FS-LASIK follow-up but who returned to the clinic with additional prompting at a 1-year visit. We also compared their surgical outcomes with those of patients who returned unprompted. Read More

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http://dx.doi.org/10.1136/bmjopen-2018-021702DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6278781PMC
February 2019
1 Read

An alignment maximization method for the kinematics of the eye and eye-head fixations.

Vision Res 2019 Mar 4;158:58-71. Epub 2019 Mar 4.

Department Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria 3800, Australia.

The orientation of human eyes is uniquely defined with respect to their gaze direction, known as Donders' law. Further, the manner in which the eyes follow Donders' law varies as a function of the situation. When the head is stationary, the Donders' surfaces are flat planes but they tilt when eye fixation distance changes. Read More

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http://dx.doi.org/10.1016/j.visres.2019.01.013DOI Listing

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

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https://bmcophthalmol.biomedcentral.com/articles/10.1186/s12
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http://dx.doi.org/10.1186/s12886-019-1061-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6385397PMC
February 2019
6 Reads

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

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

Neuromodulatory control of localized dendritic spiking in critical period cortex.

Nature 2019 03 20;567(7746):100-104. 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

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http://dx.doi.org/10.1038/s41586-019-0963-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6405296PMC

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

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http://dx.doi.org/10.1186/s12886-019-1057-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6383292PMC
February 2019
1.075 Impact Factor

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

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http://dx.doi.org/10.1136/bmjopen-2018-025441DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6398674PMC
February 2019
4 Reads

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

Comput Biol Med 2019 Apr 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

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

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

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

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http://dx.doi.org/10.1111/opo.12607DOI Listing
March 2019
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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

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http://dx.doi.org/10.3390/s19040783DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6412710PMC
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

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