Browsing Optometry and Vision Science by Title
Now showing items 38-57 of 246
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Characterization of Lipid Deposition on Contact Lenses
(University of Waterloo, 2017-08-30)The purpose of this thesis was to evaluate the influence of lipid deposition on silicone hydrogel contact lens materials and to construct an in vitro platform to further explore the effect of lipid interaction with contact ... -
CLINICAL AND ANALYTICAL STUDIES IN POSTMENOPAUSAL WOMEN SYMPTOMATIC OF DRY EYE
(University of Waterloo, 2008-05-22)Introduction Menopause which is defined as a permanent physiological, or natural, cessation of menstrual cycle, plays an important role in the development of ocular surface dryness symptoms and there is an increased ... -
Colour discrimination thresholds and acceptability ratings using simulated Microtile displays.
(University of Waterloo, 2011-10-03)Introduction Nearly all flat panel video display monitors have luminance and colour variations as the angle of view varies from the monitor’s perpendicular. The new MicrotileTM displays developed by Christie Digital are ... -
Colour Vision Test for Railway Dispatchers
(University of Waterloo, 2009-04-29)Introduction Colour codes are used extensively in railways to convey specific information governing movement of trains and equipment on the track. One such task is the railway traffic control display that uses colour coded ... -
The combined effects of benzalkonium chloride and ultraviolet radiation on the bovine lens in vitro
(University of Waterloo, 2018-04-23)Purpose: To determine the combined effects of benzalkonium chloride (BAK) and ultraviolet radiation (UV) using the primary culture of intact bovine lenses. Methods: Abattoir-provided lenses were dissected from the eyes ... -
Comparative Clinical Performance of Scleral Lenses with Varying Limbal Clearance in a Keratoconic Population
(University of Waterloo, 2019-05-10)PURPOSE The purpose of this study is to investigate the impact varying the limbal clearance (LC) has on the clinical performance of scleral lenses and the levels of inflammatory mediators in the tear film of keratoconic ... -
Comparison of a new portable digital meniscometer and optical coherence tomography in tear meniscus radius measurement
(Wiley, 2013-10-07)Purpose: Non-invasive measurement of tear meniscus radius (TMR) is useful in the assessment of tear volume for dry eye diagnosis. This study investigates the agreement between a new, portable, slit-lamp mounted, digital ... -
Comparison of meibomian gland dropout using two infrared imaging devices
(Elsevier, 2018-11-07)Purpose To measure the degree of meibomian gland (MG) dropout in the lower eyelid determined by analysis of images obtained from the LipiView II (LVII) and the Keratograph 5M (K5M). Methods The inferior eyelid of each ... -
Comparison of super-resolution algorithms applied to retinal images
(Society of Photo Optical Instrumentation Engineers, 2014-05-01)A critical challenge in biomedical imaging is to optimally balance the trade-off among image resolution, signal-to-noise ratio, and acquisition time. Acquiring a high-resolution image is possible; however, it is either ... -
Composition of incubation solution impacts in vitro protein uptake to silicone hydrogel contact lenses
(Molecular Vision, 2012-02-04)Purpose: To determine the impact of incubation solution composition on protein deposition to silicone hydrogel (SH) contact lenses using a simplistic and a complex model of the tear film. Methods: Three SH materials – ... -
A Computational Model for Predicting Visual Acuity from Wavefront Aberration Measurements
(University of Waterloo, 2009-09-14)The main purpose of this thesis is to create and validate a visual acuity model with experimentally obtained aberrations of human eyes. The other motivation is to come up with a methodology to objectively predict the ... -
Computerized and Non-Computerized Colour Vision Tests
(University of Waterloo, 2014-08-05)Introduction: Measuring colour discrimination of people who carry out tasks where colour is used to convey information and accurate colour judgments are essential for safe and efficient performance of the task is important ... -
Contact lens fitting characteristics and comfort with silicone hydrogel lenses
(University of Waterloo, 2012-02-24)Purpose To examine soft contact lens fitting characteristics using anterior segment imaging techniques and comfort. The specific aims of each chapter are as follows: Chapter 2: To calibrate the new ZEISS VisanteTM ... -
Contact lens physical properties and lipid deposition in a novel characterized artificial tear solution
(Molecular Vision, 2011-12-24)Purpose: To characterize various properties of a physiologically-relevant artificial tear solution (ATS) containing a range of tear film components within a complex salt solution, and to measure contact lens parameters and ... -
Contact Lenses and Tear Film Lipids.
(University of Waterloo, 2017-12-20)Introduction Lipids are essential tear components that aid the stability of the tear film (TF) to protect it from excess evaporation. The composition, conformation, and function of TF lipids are jeopardized by external ... -
Contact Lenses for Ciprofloxacin Drug Delivery
(University of Waterloo, 2014-07-31)PURPOSE The purpose of this thesis was to evaluate the potential of contact lenses as ciprofloxacin drug delivery devices. METHODS Investigations into ciprofloxacin uptake and release characteristics, and the possibility ... -
Contemporary Diagnosis and Management of Dry Eye
(University of Waterloo, 2016-08-31)Introduction Dry eye (DE) disease is characterized by symptoms including, but not limited to, ocular stinging, burning, and tearing. The symptoms can range from being mildly irritating, to severely debilitating and ... -
Controlling “chemical nose” biosensor characteristics by modulating gold nanoparticle shape and concentration
(Elsevier, 2015-09)Conventional lock-and-key biosensors often only detect a single pathogen because they incorporate biomolecules with high specificity. “Chemical nose” biosensors are overcoming this limitation and identifying multiple ... -
Corneal sensitivity after ocular surgery
(Wolters Kluwer, 2019-07-01)The cornea is densely innervated with free nerve endings to provide a high level of sensitivity to foreign bodies or noxious substances. They also provide trophic support to the tissues of the cornea and facilitate their ... -
Corneal Swelling with Cosmetic etafilcon A Lenses versus No Lens Wear:
(Wolters & Kluwer, 2016-06)Purpose: To determine if the use of pigments or adding polyvinyl pyrrolidone during the fabrication of 1-DAY ACUVUE DEFINE (AD) brand contact lenses impacts open-eye corneal swelling compared with no lens wear (NLW). ...