A5089948504- Ophthalmology and Visual Impairment Studies
- Visual perception and processing mechanisms
- Ophthalmology and Eye Disorders
- Motor Control and Adaptation
- Vestibular and auditory disorders
- Retinal Diseases and Treatments
- Glaucoma and retinal disorders
- Intraocular Surgery and Lenses
- Tactile and Sensory Interactions
- Pituitary Gland Disorders and Treatments
- Corneal surgery and disorders
- Retinal and Macular Surgery
- Electronic Health Records Systems
- Traumatic Ocular and Foreign Body Injuries
- Glioma Diagnosis and Treatment
- Cerebral Venous Sinus Thrombosis
- Pharmaceutical studies and practices
- Neural and Behavioral Psychology Studies
- Pharmacy and Medical Practices
- Ocular Surface and Contact Lens
- Craniofacial Disorders and Treatments
- Traumatic Brain Injury and Neurovascular Disturbances
- Spatial Neglect and Hemispheric Dysfunction
- Ocular Oncology and Treatments
- Ophthalmology and Visual Health Research
Hospital for Sick Children
2012-2023
SickKids Foundation
2008-2022
University of Toronto
2008-2017
University College London
2010-2016
Great Ormond Street Hospital
2010-2016
Vision plays an important role in controlling posture and balance children. Reduced postural control has been reported children with strabismus, but little specifically amblyopia.To investigate whether amblyopia have reduced compared to both strabismus without healthy controls.In this cross-sectional study, a total of 56 patients controls were recruited from the Ophthalmology Otolaryngology Clinics at The Hospital for Sick Children, Toronto. Participants divided into three groups: (1) 18...
We previously showed that anisometropic amblyopia affects the programming and execution of saccades reaching movements. In our current study, we investigated whether these amblyopia-related changes simply are due to a reduction in visual acuity alone by inducing artificial blur one eye visually-normal participants.Twelve participants performed reach-to-touch movements targets presented on computer screen during binocular monocular viewing. A contact lens was used vision mean level 20/50....
Our previous work has shown that amblyopia disrupts the planning and execution of visually-guided saccadic reaching movements. We investigated association between clinical features aspects visuomotor behavior are disrupted by amblyopia.A total 55 adults with (22 anisometropic, 18 strabismic, 15 mixed mechanism), 14 strabismus without amblyopia, 22 visually-normal control participants completed a task while their eye hand movements were recorded. Univariate multivariate analyses performed to...
Early intervention is critical to prevent treatable causes of vision loss in children. The objectives the current study are: (1) assess how well primary care physicians Ontario follow screening guidelines for children as recommended by Canadian Paediatric Society and Rourke Baby Record (2) identify barriers setting. Cross-sectional survey. A 19-question survey was mailed out 1000 randomly selected family (family MDs), general practitioners (GPs) paediatricians listed 2013 Medical Directory....
In an ongoing randomised clinical trial comparing dichoptic VR video games with patching for amblyopia, we evaluated any potential barriers to successful use of this novel amblyopia treatment method.From December 2017, all newly diagnosed amblyopic children were recruited. Excluded under age 4 and patients strabismus exceeding 30PD. The game was played 1 h per week at the outpatient clinic direct supervision. Records kept difficulties encountered during categorised into domains. Factors...
Amblyopia is a neurodevelopmental disorder defined as reduction in visual acuity that cannot be corrected by optical means. It has been associated with low-level deficits. However, research demonstrated link between amblyopia and attention deficits counting, tracking, identifying objects. Visual search useful tool for assessing but not well studied amblyopia. Here, we assessed the extent of using feature conjunction tasks. We compared performance participants (n = 10) to those controls 12)...
Infantile esotropia is associated with maldevelopment of cortical visual motion processing, manifested as directional asymmetry evoked potentials (mVEPs). The purpose this study was to determine whether early surgery at or before age 11 months could promote the development processing in human infants, compared standard 18 months.
Amblyopia is a neuro-developmental disorder involving decrease in visual acuity that cannot be explained by ocular abnormalities. It affects 2-3% of the population and prevalent cause monocular blindness. Patching amblyopic eye powerful treatment early childhood but its effectiveness decreases with age, which has been attributed to decreased plasticity adult brain. In last few decades new methods including dichoptic training, perceptual learning video games, were developed improved and/or...
The ocular counter-roll (OCR) reflex generates compensatory torsional eye movements during static head tilt. OCR gain is defined as the ratio of change in position to position. Previous reports have varied considerably among normal subjects, perhaps due use different targets and viewing distances. This study compared gains well-controlled (simple vs complex, near far viewing) healthy subjects (n=60; age 10–62). Two visual stimuli were used: a simple target consisting central fixation cross...