Browsing Optometry and Vision Science by Issue Date
Now showing items 121-140 of 247
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Retinal Blood Oxygen Saturation and Angiogenic and Inflammatory Biomarkers in Type 2 Diabetes
(University of Waterloo, 2015-01-16)Introduction: Diabetic retinopathy (DR) is a major source of visual loss in the world, including North America. A number of hyperglycemia-related pathways have been associated with DR onset and progression. Disturbances ... -
Effect of Reclining on Retinal Thickness in Diabetes
(University of Waterloo, 2015-01-20)Purpose: Previous studies have shown diurnal variation in retinal thickness in patients with diabetic macular edema (DME) over the course of the day but the cause, presence and magnitude of this variation is controversial. ... -
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 ... -
Agreement in dry eye management between optometrists and general practitioners in primary health care in the Netherlands
(Elsevier, 2015-04-18)Purpose: To investigate the agreement in dry eye care management between general practitioners (GPs) and optometrists in the Netherlands. Methods: A web-based survey was used to investigate the agreement in symptoms ... -
Image Restoration Methods for Retinal Images: Denoising and Interpolation
(University of Waterloo, 2015-04-27)Retinal imaging provides an opportunity to detect pathological and natural age-related physiological changes in the interior of the eye. Diagnosis of retinal abnormality requires an image that is sharp, clear and free of ... -
Infrared Imaging of Meibomian Glands and Evaluation of the Lipid Layer in Sjogren's Syndrome Patients and Nondry Eye Controls
(Association for Research in Vision and Ophthalmology, 2015-05-02)Purpose.: The purpose of this study was to evaluate meibomian gland dropout and lipid layer thickness (LLT) in patients with and without Sjögren's syndrome dry eye (SS). Methods.: We recruited 11 participants with SS ... -
Evaluation of a Novel Glycoprotein on Commercial Contact Lenses
(University of Waterloo, 2015-05-22)PURPOSE The purpose of this thesis was to evaluate the interaction of a novel glycoprotein, known as proteoglycan 4 (PRG4), with various commercial contact lenses. METHODS PRG4 was investigated for its effects on ... -
Multisensory attention training for treatment of tinnitus
(Springer Nature, 2015-05-28)Tinnitus is the conscious perception of sound with no physical sound source. Some models of tinnitus pathophysiology suggest that networks associated with attention, memory, distress and multisensory experience are involved ... -
Toxicity of Ophthalmic Solutions, Benzalkonium Chloride and UV Radiation on Human Corneal Epithelial Cells in vitro
(University of Waterloo, 2015-06-12)The purpose of this work was to develop a sensitive in vitro method for ocular toxicity testing; and to use this method to assess the individual and combined effects of ophthalmic solutions, benzalkonium chloride (BAK), ... -
Atomic force microscopy and Langmuir–Blodgett monolayer technique to assess contact lens deposits and human meibum extracts
(Elsevier, 2015-07)Purpose: The purpose of this exploratory study was to investigate the differences in meibomian gland secretions, contact lens (CL) lipid extracts, and CL surface topography between participants with and without meibomian ... -
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 ... -
Repeatability and Diurnal Variation of Tear Ferning Test
(Wolters Kluwer, 2015-09-01)Objectives: To investigate tear ferning (TF) test repeatability between sessions by observing changes in the tear fern pattern during the day. Methods: Twenty-three healthy young adults (15 men and 8 women), ranging in age ... -
Release of Ciprofloxacin and Moxifloxacin From Daily Disposable Contact Lenses From an In Vitro Eye Model
(Association for Research in Vision and Ophthalmology, 2015-10-04)Purpose.: To analyze the release of two fluoroquinolones, ciprofloxacin and moxifloxacin, from conventional hydrogel (CH) and silicone hydrogel (SH) daily disposable contact lenses (CLs), comparing release from a fixed-volume ... -
Neonatal Glycemia and Neurodevelopmental Outcomes at 2 Years
(Massachusetts Medical Society, 2015-10-15)Neonatal hypoglycemia is a common and readily treatable risk factor for neurologic impairment in children. Although associations between prolonged symptomatic neonatal hypoglycemia and brain injury are well established,1 ... -
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 ... -
The Effects of tDCS Across the Spatial Frequencies and Orientations that Comprise the Contrast Sensitivity Function
(Frontiers Media, 2015-11-27)Transcranial Direct Current Stimulation (tDCS) has recently been employed in traditional psychophysical paradigms in an effort to measure direct manipulations on spatial frequency channel operations in the early visual ... -
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 ... -
The effect of transcranial direct current stimulation on contrast sensitivity and visual evoked potential amplitude in adults with amblyopia
(Springer Nature, 2016-01-14)Amblyopia is a neurodevelopmental disorder of vision that occurs when the visual cortex receives decorrelated inputs from the two eyes during an early critical period of development. Amblyopic eyes are subject to suppression ... -
Short-Term Moderately Elevated Intraocular Pressure Is Associated With Elevated Scotopic Electroretinogram ResponsesShort-Term Elevated IOP and Scotopic ERG Responses
(Association of Research in Vision and Ophthalmology, 2016-04-01)Moderately elevated intraocular pressure (IOP) is a risk factor for open-angle glaucoma. Some patients suffer glaucoma despite clinically measured normal IOPs. Fluctuations in IOP may have a significant role since IOPs are ... -
A novel Automatic Optic Disc and Cup Image Segmentation System for Diagnosing Glaucoma using RIGA dataset
(University of Waterloo, 2016-04-07)The optic nerve head (ONH) of the retina is a very important landmark of the fundus and is altered in optic nerve pathology especially glaucoma. Numerous imaging systems are available to capture the retinal fundus and from ...