Browsing Optometry and Vision Science by Title
Now showing items 134-153 of 249
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An Investigation into the Effect of Increasing Target Size for Visual Sensitivity Measurement in Normals and in Early Glaucoma
(University of Waterloo, 2014-09-02)The clinical standard method of measurement for clinical visual sensitivity is currently Standard Automated Perimetry with a size III target (SAP III). However, there are many factors that can make the results unreliable. ... -
An investigation into the motivations, influences and expectations of students studying optometry in Canada and the United States of America
(University of Waterloo, 2021-04-01)Purpose: To investigate and compare the motivations, influences and expectations of Doctor of Optometry students studying in Canada and the United States of America. Methods: A survey was created, piloted, and conducted ... -
An investigation of interocular suppression with a global motion task
(University of Waterloo, 2012-10-31)Abstract Purpose: Interocular inhibitory interactions appear to underlie the establishment of ocular dominance. The inhibitory effect leads to suppression of the non dominant eye in certain conditions. While these ... -
The Investigation of Tear Film Osmolality as a Clinical Instrument Used in Assessments of the Tear Film and Dry Eye Disease
(University of Waterloo, 2010-01-11)Introduction: Tear film osmolality is a product of the varying concentrations of dissolved solutes (proteins, lipids and mucins) in the tear fluid. Research suggests that a hyperosmotic tear film is a trait common to ... -
Investigation of vision strategies used in a dynamic visual acuity task
(University of Waterloo, 2017-10-24)Purpose: Dynamic visual acuity (DVA), the ability to resolve fine details of a moving target, requires spatial resolution and accurate oculomotor control. Individuals who engage in activities in highly dynamic visual ... -
Investigations on the Reptilian Spectacle
(University of Waterloo, 2012-12-12)The eyes of snakes and most geckos, as well as a number of other disparate squamate taxa, are shielded beneath a layer of transparent integument referred to as the “reptilian spectacle.” Derived from the embryonic fusion ... -
Is blur sensitivity altered in children with progressive myopia?
(Elsevier, 2019-01)School aged children with progressive myopia show large accommodative lags to blur only cue which is suggestive of a large depth of focus (DOF). While DOF measures are lacking in this age group, their blur detection and ... -
Lagrange: A Three-dimensional Analytic Lens Design Method for Spectacles Application
(University of Waterloo, 2014-01-02)Purpose: traditional optical design is a numerical process based on ray tracing theory. The traditional method has the limitation of the application of the spectacle lens because of the necessity of initial configurations ... -
Lipid Deposition on Hydrogel Contact Lenses
(University of Waterloo, 2006)The primary objective of this study was to quantify and characterise lipid deposition on soft (hydrogel) contact lenses, particularly those containing siloxane components. Studies involving a variety of <em>in vitro</em> ... -
Longitudinal impact of newly acquired closed-circuit televisions (CCTV) on quality of life for low vision patients
(University of Waterloo, 2007-08-09)Ongoing efforts to quantify changes in quality of life attributable to low vision rehabilitation have focused on the utility of a single test instrument to measure this multidimensional concept. It is hypothesized that ... -
Low Vision Service Provision by Optometrist: A Nationwide Survey
(University of Waterloo, 2014-01-29)Purpose: The prevalence of age-related visual impairment is projected to increase as the Canadian population ages. As a result, the demand for low vision service is also projected to increase. However, there is a lack ... -
Lysozyme Deposition Studies on Silicone Hydrogel Contact Lens Materials
(University of Waterloo, 2005)Over 60 proteins have been detected in the tear film and among these lysozyme has attracted the greatest attention. Several techniques for elucidating the identity, quantity and conformation of lysozyme deposited on soft ... -
Mitochondrial Function and Optical Properties of the Crystalline Lens
(University of Waterloo, 2009-01-15)The crystalline lens is a unique cellular organ that performs metabolic processes while maintaining optical functionality. Mitochondria play a vital role in providing the cell with the energy necessary for these metabolic ... -
MKH-Haase Charts of Binocular Vision Measurements: Repeatability and Validity of Associated Phoria and Stereotests
(University of Waterloo, 2014-01-29)Abstract Introduction: H.J.-Haase developed a systematic set of tests for evaluating binocular vision called the Pola Test. The Pola Test measures associated phoria and stereoacuity at distance and near using a variety ... -
Modeling age-related ocular media changes using the Farnsworth Munsell (FM) 100-Hue Test
(University of Waterloo, 2021-08-31)Introduction: Evaluation of chromatic discrimination can help diagnose and monitor diseases and disorders of the visual system; however, normal age-related changes can make diagnosing colour discrimination losses challenging. ... -
Modeling In Vitro Lipid Deposition on Silicone Hydrogel and Conventional Hydrogel Contact Lens Materials
(University of Waterloo, 2012-01-12)Purpose: To examine the variables that influence lipid deposition on conventional and silicone hydrogel contact lens materials and to build a physiologically relevant in vitro model of lipid deposition on contact lenses. ... -
Monocular Adaptation of Vestibulo-Ocular Reflex (VOR)
(University of Waterloo, 2005)Purpose: This study asks whether active horizontal angular Vestibulo-Ocular Reflex (VOR) gain is capable of monocular adaptation after 4 hours of wearing 10 dioptres (D) of induced anisometropia in healthy human adults. ... -
Morphometric Characterization of Limbal Vasculature using Ultra-high Resolution Optical Coherence Tomography
(University of Waterloo, 2013-09-27)Purpose: The aim of the present study was to compare and investigate morphometric characteristics of limbal vasculature within the superior and inferior limbal regions using ultra-high resolution optical coherence ... -
Motion Processing of Reverse Phi
(University of Waterloo, 2019-11-18)Introduction: When the contrast of the successive images is reversed for a target in an apparent motion stimulus, the perceived direction is reversed, i.e., opposite of phi motion, which is an integration of the sequential ... -
MRI guided brain stimulation without the use of a neuro-navigation system.
(Hindawi Publishing, 2015-01-01)A key issue in the field of noninvasive brain stimulation (NIBS) is the accurate localization of scalp positions that correspond to targeted cortical areas. The current gold standard is to combine structural and functional ...