Now showing items 133-152 of 228

    • Mitochondrial Function and Optical Properties of the Crystalline Lens 

      Olsen, Kenneth Wayne (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 

      Alhassan, Mosaad (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 

      Opoku-Yamoah, Victor (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 

      Lorentz, Holly Irene (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) 

      Sehizadeh, Mina (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 

      Alabi, Emmanuel (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 

      Kuppuswamy Parthasarathy, Mohana (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. 

      Vaghefi, Ehsan; Cai, Peng; Fang, Fang; Byblow, Winston D.; Stinear, Cathy M.; Thompson, Benjamin (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 ...
    • Multisensory attention training for treatment of tinnitus 

      Spiegel, Daniel P.; Linford, T.; Thompson, Benjamin; Petoe, Matt A.; Kobayashi, K.; Stinear, Cathy M.; Searchfield, Grant D. (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 ...
    • Near addition lenses as a tool to investigate vergence adaptation in myopic children 

      Sreenivasan, Vidhyapriya (University of Waterloo, 2011-08-12)
      Accommodation and vergence are two interacting ocular motor systems that function to maintain clear and single vision across a wide range of distances. Sustained fixation results in the adaptation of these ocular motor ...
    • Neonatal Glycemia and Neurodevelopmental Outcomes at 2 Years 

      McKinlay, Christopher J.D.; Alsweiler, Jane M.; Ansell, Judith M.; Anstice, Nicola S.; Chase, J. Geoffrey; Gamble, Gregory D.; Harris, Deborah L.; Jacobs, Robert J.; Jiang, Yannan; Paudel, Nabin; Signal, Matthew; Thompson, Benjamin; Wouldes, Trecia; Yu, Tzu-Ying; Harding, Jane E. (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 ...
    • Neural modulation of the human visual cortex 

      Abuleil, Dania (University of Waterloo, 2020-09-30)
      Neuroplasticity is a phenomenon that refers to the brain’s ability to reorganize, strengthen, and form neural connections, a process that becomes increasingly more difficult with age. Gamma amino-butyric acid (GABA), the ...
    • A New Portable Digital Meniscometer 

      Bandlitz, Stefan; Purslow, Christine; Murphy, Paul J.; Pult, Heiko; Bron, Anthony J. (Wolters Kluwer, 2014-01)
      Purpose: The aims of this study were (i) to develop a new portable slit-lamp mounted digital meniscometer (PDM) and (ii) to test its accuracy and repeatability compared to the existing Yokoi et al. videomeniscometer ...
    • Non-invasive brain stimulation of the primary visual cortex of healthy adults and individuals with amblyopia 

      DONKOR, RICHARD (University of Waterloo, 2021-05-03)
      Introduction: Amblyopia is a neurological condition that affects the visual cortex and causes visual deficits, typically in one eye. Recovery from amblyopia requires significant visual cortex neuroplasticity to allow for ...
    • A novel Automatic Optic Disc and Cup Image Segmentation System for Diagnosing Glaucoma using RIGA dataset 

      Almazroa, Ahmed (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 ...
    • Novel methods for the evaluation of the tear film in the diagnosis of dry eye 

      Keech, Adam John (University of Waterloo, 2010-09-27)
      Dry eye is a complex, multi-factorial disease that results in a compromised tear film and ocular surface. Clinicians and researchers alike have historically relied on an individual’s symptoms to diagnose and manage the ...
    • Objective assessment of Visual acuity in infants 

      Hathibelagal, Amithavikram (University of Waterloo, 2013-08-06)
      Purpose Early detection of abnormal visual acuity (VA) is crucial in the identification and management of ocular and visual abnormalities in infants. Currently, the Teller Acuity Cards (TACs) are considered the gold ...
    • Ocular Discomfort Upon Tear Drying 

      Varikooty, Jalaiah (University of Waterloo, 2003)
      <b>Purpose:</b> Assess the relationship between tear film drying and sensation between blinks. <b>Methods:</b> MATLAB sampled a slitlamp video camera, a potentiometer and a microphone while subjects kept one eye open ...
    • Ocular impression-taking - which material is best? 

      Turner, Jennifer; Purslow, Christine; Murphy, Paul J. (Wolters Kluwer, 2019-01)
      Objectives: To assess the efficacy and effect on clinical signs of a polyvinylsiloxane (Tresident; Shütz Dental Group GmbH, Germany) compared with an irreversible hydrocolloid (Orthoprint; Zhermack SpA, Badia Polesine, ...
    • Ocular Perfusion Pressure in Spaceflight-Associated Neuro-Ocular Syndrome 

      Mohiar, Yara (University of Waterloo, 2020-10-26)
      Purpose: Spaceflight associated neuro-ocular syndrome (SANS) is considered by the National Aeronautics and Space Administration (NASA) as one of the most significant barriers to long term space exploration (Larkin, 2018). ...

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