Browsing Optometry and Vision Science by Title
Now showing items 164-183 of 246
-
Ocular Surface Sensory Processing and Signal Detection Theory
(University of Waterloo, 2021-09-28)Purpose: The main aim of the experiments in this thesis is to evaluate the feasibility of using signal detection theory (SDT) to determine the detectability and bias of various ocular surface pneumatic stimuli. Chapter ... -
Optimization of Sweep Visually Evoked Potential (sVEP) in Adults
(University of Waterloo, 2008-05-01)Purpose and hypothesis: The purpose of this study was to optimize and standardize the following parameters of sweep Visually Evoked Potential (sVEP) in adults: criteria for fitting the regression line to estimate threshold, ... -
An Optokinetic Nystagmus Detection Method for Use With Young Children
(Institute of Electrical and Electronics Engineers, 2015-03-05)The detection of vision problems in early childhood can prevent neurodevelopmental disorders such as amblyopia. However, accurate clinical assessment of visual function in young children is challenging. optokinetic nystagmus ... -
The Optometric Management of Concussion
(University of Waterloo, 2022-01-31)Traumatic brain injury is a major public health problem that affects millions of people annually and hundreds of people experience brain injury daily. Many of these individuals develop visual symptoms. Optometrists play a ... -
Optometry Outreach in Indigenous Communities in British Columbia, Saskatchewan, and Manitoba
(University of Waterloo, 2023-08-31)Introduction: Inuit, Métis, and First Nations, the three main Indigenous groups within Canada, face disproportionate barriers to access for primary eye and vision care. Optometrists visit rural and remote Indigenous ... -
Overnight Corneal Swelling and Deswelling with Silicone Hydrogel Lenses
(University of Waterloo, 2019-12-13)Purpose: To compare central corneal swelling (CS) after eight hours of sleep in eyes wearing 12 different silicone hydrogel (SiHy) contact lenses (CLs) and to model between-subject variability in CS and deswelling. Methods: ... -
Patient compliance with contemporary contact lenses: Impact on successful contact lens wear
(University of Waterloo, 2013-04-15)Purpose: Contact lens (CL) materials, modalities of wear and replacement, and care systems have changed considerably since the early studies of CL compliance were first conducted. Silicone hydrogel (SiHy) and daily disposable ... -
The Phenotype of Tear Neutrophils and Their Role in Ocular Homeostasis and Inflammation
(University of Waterloo, 2023-07-31)Introduction: Neutrophils (polymorphonuclear neutrophils, PMNs) are part of the innate immune system with potent killing mechanisms against pathogens. Although the anterior segment of the eye has a unique characteristic, ... -
Post Stroke Visual Midline Shift Syndrome
(University of Waterloo, 2018-10-01)Abstract Introduction The definition of an individual’s visual midline is the point which the individual perceives as being straight-ahead or “in front of their nose”. One of the perceptual consequences of a stroke for ... -
Prenatal exposure to recreational drugs affects global motion perception in preschool children
(Springer Nature, 2015-11-19)Prenatal exposure to recreational drugs impairs motor and cognitive development; however it is currently unknown whether visual brain areas are affected. To address this question, we investigated the effect of prenatal ... -
Preschool children's vision screening in New Zealand: a retrospective evaluation of referral accuracy
(BMJ Publishing Group, 2015-11-27)Objectives To assess the accuracy of preschool vision screening in a large, ethnically diverse, urban population in South Auckland, New Zealand. Design Retrospective longitudinal study. Methods B4 School Check vision ... -
Prevalence of Convergence Insufficiency-Type Symptomatology in Parkinson’s Disease
(Cambridge University Press, 2017-09)Background: Individuals with Parkinson’s disease (PD) often present with visual symptoms (e.g., difficulty in reading, double vision) that can also be found in convergence insufficiency (CI). Our objective was to estimate ... -
Protein Deposition and Bacterial Adhesion to Conventional and Silicone Hydrogel Contact Lens Materials
(University of Waterloo, 2009-04-27)Introduction Contact lenses suffer from the same problems of deposition that other biomaterials exhibit, being rapidly coated with a variety of proteins, lipids and mucins. The first event observed at the interface between ... -
Protein sorption to contact lenses and intraocular lenses
(University of Waterloo, 2009-12-22)Purpose: To locate protein sorption on the surface and inside the matrix of soft contact lens materials and intraocular lenses (IOL). Methods: The proteins albumin and lysozyme were investigated as they are highly ... -
Protocol development for reliable isolation of tear-film neutrophils and in vitro functionality testing
(University of Waterloo, 2019-09-19)During prolonged eye closure, such as during sleep, leukocytes are recruited to the ocular surface, with polymorphonuclear neutrophils (PMNs) representing the largest population. PMNs are essential inflammatory cells ... -
Psychophysical and Clinical Investigations of Ocular Discomfort
(University of Waterloo, 2012-09-26)Purpose To investigate ocular surface sensations, specifically ocular discomfort using psychophysical and clinical techniques. The measurement of discomfort on the ocular surface has been limited to the use of traditional ... -
Psychophysical Studies Of Motion Perception In Autism Spectrum Disorders
(University of Waterloo, 2019-05-23)Introduction Studies have shown considerable evidence of visual dysfunction in Autism Spectrum Disorders (ASD). Motion perception research in ASD reports a superior performance in processing motion information of fine ... -
Quantification of MUCIN 1, cell surface associated and MUCIN16, cell surface associated proteins in tears and conjunctival epithelial cells collected from postmenopausal women
(Molecular Vision, 2013-05-04)Purpose: To quantify the expression of mucin 1, cell surface associated (MUC1) and mucin 16, cell surface associated (MUC16) proteins and messenger ribonucleic acid (mRNA) in a cohort of postmenopausal women (PMW), to ... -
Reading Additions in Children and Young Adults with Low Vision – Effects on Reading Performance
(University of Waterloo, 2011-02-24)Reading is one of the most important activities in most people’s life. For children, reading is a window to knowledge, good educational achievement and better job opportunities in the future. Thus reading fluency is a very ... -
The Regional Extent of Suppression: Strabismics Versus Nonstrabismics
(Association of Research in Vision and Ophthalmology, 2013-10)Purpose.: Evidence is accumulating that suppression may be the cause of amblyopia rather than a secondary consequence of mismatched retinal images. For example, treatment interventions that target suppression may lead to ...