Search Our Scientific Publications & Authors

Neural Plast 2019 19;2019:5157628. Epub 2019 Mar 19.

McGill University, McGill Vision Research, Department of Ophthalmology, Quebec, Montreal, Canada H3G 1A4.

Recent laboratory findings suggest that short-term patching of the amblyopic eye (i.e., inverse occlusion) results in a larger and more sustained improvement in the binocular balance compared with normal controls. Read More

Eur J Ophthalmol 2019 Apr 24:1120672119841216. Epub 2019 Apr 24.

1 Anhui Medical University, Hefei, China.

Introduction: Amblyopia is speculated to be an untreatable disease in the patient, who is beyond the critical period of vision; however, currently, it is treatable in adults.

Purpose: This study aimed to elucidate whether the treatment is useful in both anisometropic amblyopia and strabismic amblyopia. In addition, the differences were detected between anisometropic amblyopia and strabismic amblyopia after the same perceptual treatment and whether the suppression in anisometropic amblyopia or strabismic amblyopia could be decreased before and after the treatment. Read More

Disabil Rehabil Assist Technol 2019 Apr 23:1-7. Epub 2019 Apr 23.

b Department of Community Ophthalmology , Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences , New Delhi , India.

Background: To understand the awareness and utilization of assistive technology in students at schools for the blind in Delhi.

Methods: A cross sectional study was conducted among 250 students selected randomly from 10 blind schools in Delhi. Binocular distance presenting and pinhole vision acuity were assessed using Snellen "E" chart and a multiple pinhole occluder. Read More

Psychol Sci 2019 Apr 22:956797619837204. Epub 2019 Apr 22.

1 School of Psychology, University of New South Wales.

The ability to control one's thoughts is crucial for attention, focus, ideation, and mental well-being. Although there is a long history of research into thought control, the inherent subjectivity of thoughts has made objective examination, and thus mechanistic understanding, difficult. Here, we report a novel method to objectively investigate thought-control success and failure by measuring the sensory strength of visual thoughts using binocular rivalry, a perceptual illusion. Read More

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

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

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

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

Klin Monbl Augenheilkd 2019 Apr 18;236(4):442-445. Epub 2019 Apr 18.

University Eye Hospital Basel, Basel, Switzerland.

Background: To compare two commonly used strengthening procedures in strabismus surgery: plication and resection of the extraocular muscle (EOM).

Patients And Methods: From an anonymous databank of strabismus surgeries, performed at the University Eye Hospital Basel, patients with a horizontal strabismus surgery, consisting of a recession combined with either plication or resection of the antagonist and a follow-up of at least 3 months, were included. Exclusion criteria were previous eye surgeries, binocular surgeries, and simultaneous surgery of oblique or vertical EOM. Read More

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

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

Invest Ophthalmol Vis Sci 2019 Apr;60(5):1527-1537

University of Houston, College of Optometry, Houston, Texas, United States.

Purpose: We investigated the effect of blur and disparity cues on accommodative accuracy (lag) and variability (time [RMS] and frequency domain [LFC]) in the developing visual system.

Methods: A total of 59 children (3-9 years, spherical equivalent refractive error [RE] = -0.3- +4. Read More

An Acad Bras Cienc 2019 8;91(1):e20180047. Epub 2019 Apr 8.

Centro de Estudios Parasitológicos y de Vectores/CEPAVE, Facultad de Ciencias Naturales y Museo/UNLP, Consejo Nacional de Investigaciones Científicas y Técnicas/CONICET, Boulevard 120, s/n, e/61 y 62 La Plata, Buenos Aires, Argentina.

The fourth instar larva and pupa of Dasyhelea flavifrons Guérin-Méneville are redescribed, illustrated, and photomicrographed using binocular, phase-contrast, and scanning electron microscopy. Comparisons with the American species of the grisea group were made. The immatures were collected by using a siphon bottle in tree-holes and from water collected in dead snail shells in Salta Province, Argentina, transported to the laboratory and there bred to the emergence of the adults. Read More

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

Vet Ophthalmol 2019 Apr 14. Epub 2019 Apr 14.

College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.

Objective: To document ocular lesions present in cold-stunned sea turtles and determine the impact of these lesions on their release.

Animals: All sea turtles (Caretta caretta, Chelonia mydas, and Lepidochelys kempii) presenting to rehabilitation centers in North Carolina over two cold stun seasons.

Procedures: Complete ophthalmic examination using slit-lamp biomicroscopy, fluorescein stain, rebound tonometry, and occasionally binocular indirect funduscopy was performed within 1 week of presenting to the rehabilitation centers. Read More

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

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

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

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

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

J Vis 2019 Apr;19(4):12

Department of Psychology, University of Washington, Seattle, WA, USA.

What we see depends on the spatial context in which it appears. Previous work has linked the suppression of perceived contrast by surrounding stimuli to reduced neural responses in early visual cortex. This surround suppression depends on at least two separable neural mechanisms, "low-level" and "higher level," which can be differentiated by their response characteristics. Read More

Neuropsychologia 2019 Apr 2;129:171-178. Epub 2019 Apr 2.

Department of Ophthalmology, Otto-von-Guericke-University Magdeburg, Germany; Center for Behavioural Brain Sciences, Magdeburg, Germany. Electronic address:

Due to an increased crossing of the optic nerve fibers at the optic chiasm in albinism, the visual cortex receives largely monocular input from the contralateral eye. Here we investigated whether this obstruction of binocular integration at the cortical input stage also impacts on interocular information exchange at the high processing level of visual memory. Interocular transfer (IOT) of visual memory retrieval was tested psychophysically after monocular encoding in 8 albinotic participants and 24 healthy controls. Read More

PLoS One 2019 4;14(4):e0214939. Epub 2019 Apr 4.

Department of Medical Imaging, Shandong Provincial Hospital Affiliated to Shandong University, Shandong, China.

Few investigators have analyzed fetal ocular growth with Magnetic Resonance Imaging (MRI) of high magnetic strength. Our purpose is to obtain normative biometrics for fetal ocular development in the second trimester of pregnancy. Sixty specimens with a gestational age (GA) of 12-23 weeks were scanned using a 7. Read More

J Vis 2019 Apr;19(4)

Department of Psychology, University of Hong Kong, Hong Kong, Hong Kong SAR.

The image of a textured surface provides multiple potential cues that could be used to perceive its 3D structure. When a surface texture has oriented structure, perspective convergence of the oriented components provides a texture cue, in addition to texture scaling and compression. Some findings suggest that oriented spectral components aligned with the direction of slant are important for 3D perception from texture, but this has only been demonstrated in restricted situations. Read More

J Vis 2019 Apr;19(4)

School of Psychology, The University of Sydney, Sydney, New South Wales, Australia.

Perception is sometimes bistable, switching between two possible interpretations. Levelt developed several propositions to explain bistable perception in binocular rivalry, based on a model of competing neural populations connected through reciprocal inhibition. Here we test Levelt's laws with bistable plaid motion. Read More

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

PLoS One 2019 3;14(4):e0214766. Epub 2019 Apr 3.

School of Psychology and Neuroscience, University of St Andrews, St Andrews, Fife, United Kingdom.

Motion at constant speed in the world maps into retinal motion very differently for lateral motion and motion in depth. The former is close to linear, for the latter, constant speed objects accelerate on the retina as they approach. Motion in depth is frequently studied using speeds that are constant on the retina, and are thus not consistent with real-world constant motion. Read More

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

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

Vestn Otorinolaringol 2019 ;84(1):60-63

Department of otorhinolaryngology, Russian Medical Academy of Continuous Postgraduate Education, Moscow, Russia, 125993.

The technical aspects of endoscopic otosugery imply the necessity of the long-term intense preparation of the specialists. Mastering new endoscopic techniques constitute a serious challenge even for a physician having the many years' experience of work with the binocular microscope which dictates the necessity of introduction of the simulation technologies for the training in endoscopic operations. The results of the analysis of the relevant literature publications provided a basis for the development of the methodology for teaching the skills of endoscopic tympanoplasty (ET) based on the use of the simulation models. Read More

Front Syst Neurosci 2019 18;13:12. Epub 2019 Mar 18.

Department of Psychology, Universidad de La Coruña, La Coruña, Spain.

When monocular images cannot be fused, perception alternates between the two (or more) possible images. This phenomenon, binocular rivalry (BR), is driven by the physical properties of the stimuli (size, contrast, spatial frequency, etc.) but it can also be modulated by attention to features of one of the rival stimuli (Chong et al. Read More

Clin Ophthalmol 2019 14;13:501-513. Epub 2019 Mar 14.

Department of Ophthalmology, Faculty of Medicine Osaka-Sayama City, Kindai University, Osaka, Japan.

Purpose: The head-mounted automated perimeter imo is a new portable perimeter that does not require a dark room and can be used to examine patients in any setting. In this study, imo 24plus (1-2) AIZE examinations were compared with previous Humphrey Field Analyzer (HFA) 30-2 (SITA standard) examinations within the same patient.

Patients And Methods: imo examinations (either head-mounted [i-H] or fixed [i-F] type) were performed in patients with glaucoma or suspected glaucoma who had already experienced HFA five or more times. Read More

BMC Biol 2019 Mar 29;17(1):29. Epub 2019 Mar 29.

Werner Reichardt Centre for Integrative Neuroscience, Institute of Neurobiology, University of Tübingen, 72076, Tübingen, Germany.

Background: The processing of optic flow in the pretectum/accessory optic system allows animals to stabilize retinal images by executing compensatory optokinetic and optomotor behavior. The success of this behavior depends on the integration of information from both eyes to unequivocally identify all possible translational or rotational directions of motion. However, it is still unknown whether the precise direction of ego-motion is already identified in the zebrafish pretectum or later in downstream premotor areas. Read More

Cortex 2019 Mar 1;117:1-15. Epub 2019 Mar 1.

The MARCS Institute, Western Sydney University, Australia.

Our study proposes a test of a key assumption of the most prominent model of consciousness - the global workspace (GWS) model (e.g., Baars, 2002, 2005, 2007; Dehaene & Naccache, 2001; Mudrik, Faivre, & Koch, 2014). Read More

PLoS Biol 2019 Mar 29;17(3):e2006405. Epub 2019 Mar 29.

Laboratory of Neuro- and Psychophysiology, Department of Neurosciences, KU Leuven Medical School, Leuven, Belgium.

Electrophysiological evidence suggested primarily the involvement of the middle temporal (MT) area in depth cue integration in macaques, as opposed to human imaging data pinpointing area V3B/kinetic occipital area (V3B/KO). To clarify this conundrum, we decoded monkey functional MRI (fMRI) responses evoked by stimuli signaling near or far depths defined by binocular disparity, relative motion, and their combination, and we compared results with those from an identical experiment previously performed in humans. Responses in macaque area MT are more discriminable when two cues concurrently signal depth, and information provided by one cue is diagnostic of depth indicated by the other. Read More

J Exp Psychol Hum Percept Perform 2019 May 28;45(5):659-680. Epub 2019 Mar 28.

Brown University.

Grasping critically depends on stereo information. We previously found that binocular disparities yield a distorted visual space, in which objects close to the observer are grasped and perceived as if they were more elongated than farther objects. Such lack of shape constancy results from the inaccurate estimate of the viewing distance, which affects the estimated depth-to-width ratio of an object. Read More

J Neurophysiol 2019 Mar 27. Epub 2019 Mar 27.

United Kingdom.

Discerning objects from their surrounds (i.e., figure-ground segmentation) in a way that guides adaptive behaviours is a fundamental task of the brain. Read More

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

Front Syst Neurosci 2019 12;13. Epub 2019 Mar 12.

Department of Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Tuebingen, Germany.

Discovering neural correlates of subjective perception and dissociating them from sensory input has fascinated neuroscientists for a long time. Bistable and multistable perception phenomena have exhibited great experimental potential to address this question. Here, we performed electrophysiological recordings from single neurons in lateral intraparietal area (LIP) of rhesus macaques during stimulus and perceptual transitions induced by binocular flash suppression (BFS). Read More

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

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

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

J Vis 2019 Mar;19(3)

Institute of Biology, Otto-von-Guericke University, Magdeburg, Germany.

When binocular rivalry is induced by opponent motion displays, perceptual reversals are often associated with changed oculomotor behavior (Frässle, Sommer, Jansen, Naber, & Einhäuser, 2014; Fujiwara et al., 2017). Specifically, the direction of smooth pursuit phases in optokinetic nystagmus typically corresponds to the direction of motion that dominates perceptual appearance at any given time. Read More

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

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

Atten Percept Psychophys 2019 Mar 18. Epub 2019 Mar 18.

General Psychology, Institute of Psychology and Education, Faculty of Engineering, Computer Science and Psychology, Ulm University, Albert-Einstein-Allee 47, 89069, Ulm, Germany.

Crowding refers to the phenomenon of reduced recognition performance for peripherally presented targets that are flanked by similar stimuli. Crowding is known to vary with lateral distances (i.e. Read More

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

Sensors (Basel) 2019 Mar 17;19(6). Epub 2019 Mar 17.

College of Information and Communication, Harbin Engineering University, Harbin 150001, China.

The wave is an important hydrological element in marine research. Accurately describing the characteristics of waves is therefore significant to the study of marine power. The contents of this article are as follows: (1) a wave height measurement system using binocular cameras is proposed, and the small tank experiments are conducted to prove the efficacy of the proposed system; (2) based on the scale invariant feature transition (SIFT) algorithm, sub-pixel Harris corners are calculated in the difference-of-Gaussian (DOG) space to locate key points more accurately; and (3) a bi-directional epipolar constraint is employed to decrease the mismatch rate and computation time. Read More

J Neurol Phys Ther 2019 Apr;43 Suppl 2 Supplement, Special Supplement: International Conference on Vestibular Rehabilitation:S27-S30

Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology-Head and Neck Surgery, and Emergency Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland (D.R.G.); and Laboratory of Vestibular Neuroadaptation, Departments of Otolaryngology-Head and Neck Surgery and Physical Medicine and Rehabilitation, Johns Hopkins University, School of Medicine, Baltimore, Maryland (M.C.S.).

Background And Purpose: Both central (eg, brain stem, cerebellum) and peripheral (eg, vestibular, fourth cranial nerve palsy) etiologies can cause a vertical misalignment between the eyes with a resultant vertical diplopia. A vertical binocular misalignment may be due to a skew deviation, which is a nonparalytic vertical ocular misalignment due to roll plane imbalance in the graviceptive pathways. A skew deviation may be 1 component of the ocular tilt reaction. Read More

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