Now showing items 188-207 of 228

    • Retinal Vascular Reactivity to Incremental Hyperoxia During Isocapnia 

      Tong, Adrienne W. (University of Waterloo, 2008-07-07)
      PURPOSE: Systemic hyperoxia has been induced using inspired gases in many studies to investigate vascular reactivity in the retinal vasculature. Technical limitations in the past resulted in inadequate control of systemic ...
    • The Role of MMPs, Smad3 and Heat Shock Proteins in TGF-β-Induced Anterior Subcapsular Cataract Development 

      Banh, Alice (University of Waterloo, 2007-06-18)
      Transforming growth factor beta (TGF-β) has been implicated in anterior subcapsular cataract (ASC) development. In the first section of this thesis, an in-vitro rat lens model was used to determine the role of matrix ...
    • Self versus examiner administration of the Ocular Surface Disease Index© 

      Ngo, William; Srinivasan, Sruthi; Keech, Adam; Keir, Nancy; Jones, Lyndon W. (Elsevier, 2017-01)
      Purpose: To compare the difference in Ocular Surface Disease Index© (OSDI) scores when participants were given the OSDI to complete on their own (self-guided, SG), versus under the guidance of the examiner (examiner-guided, ...
    • Sensitivity Across the Ocular Surface—Fundamental Findings and Clinical Applications 

      Situ, Ping (University of Waterloo, 2010-04-29)
      Current understanding of sensitivity and sensation experienced across the ocular surface remains limited. This project explored the regional variation of corneal sensitivity and transducer function, interaction of sensory ...
    • Short-Term Moderately Elevated Intraocular Pressure Is Associated With Elevated Scotopic Electroretinogram ResponsesShort-Term Elevated IOP and Scotopic ERG Responses 

      Choh, Vivian Cheng-Pei; Gurdita, Akshay; Tan, Bingyao; Prasad, Ratna C.; Bizheva, Kostadinka; Joos, Karen M. (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 ...
    • Sjogren's Syndrome: A Clinical and Biochemical Analysis 

      Caffery, Barbara (University of Waterloo, 2009-04-30)
      Sjogren’s syndrome (SS) is a systemic autoimmune disease that presents to eye care practitioners with the hallmark symptom of “dry eye.” Stratifying dry eye patients as Sjogren’s positive or negative is a critical ...
    • Statistical Analysis of Hartmann-Shack Images of a Pre-school Population 

      Thapa, Damber (University of Waterloo, 2010-01-22)
      The impact of uncoordinated growth of the optical components of the eye may stimulate different levels of monochromatic aberrations in the growing eyes of the children. This thesis aimed to examine the impact of age, visual ...
    • Stereocoherence thresholds as a measure of global stereopsis 

      Unnisa Begum, Viquar (University of Waterloo, 2017-06-14)
      Purpose: The purpose of this study was to develop a robust and reliable clinical test of stereopsis that is complementary to the conventional disparity threshold tests. Methods: Random dot stereograms containing ...
    • Structure and Function in Early Glaucoma 

      Ho, Yuan-Hao (University of Waterloo, 2016-08-24)
      Glaucoma is a group of diseases, which exhibit a characteristic optic neuropathy and may result in progressive visual field loss. The most important risk factor is raised intraocular pressure (IOP) usually secondary to ...
    • Structure and Function in Early Glaucoma 

      Balian, Carmen (University of Waterloo, 2017-01-23)
      Glaucoma is a general term that includes an array of ocular conditions that cause a specific neuropathy of the optic nerve (Greenfield, Bagga, et al. 2003) of which abnormalities associated with this disorder are localized ...
    • Studies of Visual Attention 

      Bora, Archana (University of Waterloo, 2009-06-22)
      Aim The experiment proposed to study the effect of sustained visual attention in an effective visual field of 40 degrees, in cued and uncued conditions with different set-sizes. Methods The participants had a normal ...
    • STUDIES ON IMPACT RESISTANCE OF SPECTACLE LENS MATERIALS 

      Oyaide-Ofenor, Maureen (University of Waterloo, 2014-05-01)
      Introduction: The Canadian Standards Association (CSA) Z94.3-07 ballistic impact test for industrial lenses, tests the ability of a lens material to withstand the impact of a 6.4 mm diameter steel ball travelling at a ...
    • Studies on the Optimization of Neuropeptides Detection in the Human Tear Film 

      Jabeen, Asiya (University of Waterloo, 2020-05-13)
      Introduction: Dry Eye Disease (DED) stems from a disruption of the homeostasis of the tear film (TF), a thin layer of fluid covering the ocular surface. The TF consists of numerous constituents that include proteins, ...
    • A Study of Saccade Dynamics and Adaptation in Athletes and Non Athletes 

      Babu, Raiju Jacob (University of Waterloo, 2004)
      Purpose: The aim of the study was to delineate differences in saccade characteristics between a population of athletes and non athletes. Aspects specifically investigated were latency, accuracy, peak velocity, and gain ...
    • Study of the dynamic interactions between vergence and accommodation 

      Suryakumar, Rajaraman (University of Waterloo, 2005)
      <em>Introduction:</em> Accommodation (change in ocular focus) and Vergence (change in ocular alignment) are two ocular motor systems that interact with each other to provide clear single binocular vision. While retinal ...
    • Talking with and about older adult patients: The socializing power of patient-centered communication in an optometry teaching clinic 

      Hildebrand, Jenna Mae (University of Waterloo, 2007-07-31)
      In a teaching clinic, healthcare students and their supervisors talk with their patients in the examination room and they talk about their patients during teaching consultations outside the examination room. Effective ...
    • Tear evaporation rates: What does the literature tell us? 

      Wong, Stephanie; Murphy, Paul J.; Jones, Lyndon W. (Elsevier, 2017-12-24)
      Purpose A previous literature review reported tear evaporation rates (TERs) from studies conducted on rabbits and humans between 1941 and 2003. Closer examination of the presented data revealed inaccuracies in the reporting ...
    • Tear exchange and contact lenses: A review 

      Muntz, Alex; Subbaraman, Lakshman N.; Sorbara, Luigina; Jones, Lyndon W. (Elsevier, 2015-01)
      Tear exchange beneath a contact lens facilitates ongoing fluid replenishment between the ocular surface and the lens. This exchange is considerably lower during the wear of soft lenses compared with rigid lenses. As a ...
    • The tear ferning test: a simple clinical technique to evaluate the ocular tear film 

      Masmali, Ali M.; Purslow, Christine; Murphy, Paul J. (Wiley, 2014-08-20)
      A healthy tear film is very important for many major functions of the ocular surface. Dry eye disease is a significant clinical problem that needs to be solved but the poor correlation between clinical signs and reported ...
    • The TFOS Dry Eye Workshop II: Executive Summary 

      Craig, Jennifer P.; Nelson, J. Daniel; Azar, Dimitri T.; Belmonte, Carlos; Bron, Anthony J.; Chauhan, Sunil K.; de Paiva, Cintia S.; Gomes, José A.P.; Hammitt, Katherine M.; Jones, Lyndon W.; Nichols, Jason J.; Nichols, Kelly K.; Novack, Gary D.; Stapleton, Fiona; Willcox, Mark D. P.; Wolffsohn, James S.; Sullivan, David A. (Elsevier, 2017-08-07)
      This article presents an Executive Summary of the conclusions and recommendations of the 10-chapter TFOS DEWS II report. The entire TFOS DEWS II report was published in the July 2017 issue of The Ocular Surface. A downloadable ...

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