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Showing 1 to 20 of 25 for “"Optic Nerve Head"”.

  1. Optic Nerve Head Image Analysis for Glaucoma Progression Detection

    O'Leary, NeilCity University London2011

    … care. In the glaucoma clinic, retinal and optic nerve head (ONH) imaging can be used to help the clinician to manage patient treatment appropriately. By providing high resolution images of the optic nerve head structures and identifying changes therein related to disease onset and …

    city-london Repository record

  2. Biomarkers of Optic Nerve Head Glial Cell Activation Following Biomechanical Insult

    Rogers, Ronan2012

    … death of retinal ganglion cells, a unique optic nerve neuropathy resulting in loss of vision. Increased intra-ocular pressure is known to be a leading risk-factor for glaucoma, and lowering IOP is currently the only evidence based method for the clinical management of the disease. However …

    toronto-retro Repository record

  3. Lamina Cribrosa and Optic Nerve Head Geometry as a Function of Myopia in Older Normal Eyes

    Nourani-Dargiri, SaraUniversity of Houston2017

    … of glaucoma. However, their impact on optic nerve head (ONH) structure in normal eyes has not been fully described. We examined whether differences exist in ONH and lamina cribrosa structure with myopia in older normal eyes. Methods: Spectral domain optical coherence tomography (SDOCT) …

    houston Repository record

  4. Bestimmung von arteriovenöser Passagezeit, Farbstoffbolusgeschwindigkeit und Steigung des Farbstoffeinstroms sowie Berechnung des okulären Blutflusses in den retinalen Blutgefäßen bei Normaldruckglaukompatienten mittels Scanning-Laser-Fluoreszein-Angiographie

    Gnielinski, RomanPublikationsserver der RWTH Aachen University2002

    Circulatory deficits around the optic nerve head are a primary factor in the pathogenesis of the Normal-Tension-Glaucoma. In this study AVP and FBG were measured and as in previous studies a slower velocity in NDG-Patients. However, the ocular blood flow is of primary importance for the nutrition …

    aachen Repository record

  5. Finite element modeling of the human eye

    Chan, Venetia (Venetia V.)Massachusetts Institute of Technology2001

    … and magnitude of peak stresses in the retina and optic nerve head during initial loading. After 0.6125 ms, stresses as high as 5.4 x 10⁷ Pa were reached. The peak stresses occurred in the portions of the retina and the optic nerve head close to the boundary between these two substructures.

    mit Repository record

  6. Leckage der Papille bei gesunden Probanden und Glaukompatienten mittels Scanning-Laser-Ophthalmoskop-Videofluoreszenzangiographie

    Ali, Abdel SaberPublikationsserver der RWTH Aachen University2002

    The investigation of the optic disc and their changes is probably the most important process parameter with glaucoma and glaucoma-suspicion. By numerous picture giving procedures one strives since the beginnings of the ophthalmology to regard the eye background with glaucoma patients in order to …

    aachen Repository record

  7. Following Ocular Changes in United States Optometry Students (FOCUS): Protocol Development and Baseline Data

    Keyzer, Matthew Marinus 1995-University of Houston2025

    … (Grand Seiko), biometry (LenStar), optical coherence tomography (OCT) and OCT angiography (OCTA, Spectralis), and ocular aberrations (COAS HD). Participants were classified into refractive error groups. OCT scans were analyzed for retinal and choroidal thickness, optic nerve head …

    houston Repository record

  8. Structural Integrity of Eyes Diagnosed with Amblyopia. The measurement of retinal structure in amblyopia using Optical Coherence Tomography.

    Bruce, AlisonUniversity of Bradford2011

    … to establish the prevalence of subtle retinal/optic nerve head defects in eyes diagnosed with amblyopia, to distinguish between possible explanations for the origin of such defects and to investigate the relationship between quantitative measures of retinal structure, retinal nerve fibre layer …

    bradford Repository record

  9. Structural Integrity of Eyes Diagnosed with Amblyopia. The measurement of retinal structure in amblyopia using Optical Coherence Tomography.

    Bruce, AlisonUniversity of Bradford2011

    … to establish the prevalence of subtle retinal/optic nerve head defects in eyes diagnosed with amblyopia, to distinguish between possible explanations for the origin of such defects and to investigate the relationship between quantitative measures of retinal structure, retinal nerve fibre layer …

    bradford Repository record

  10. DEEP LEARNING ALGORITHMS FOR OPTICAL COHERENCE TOMOGRAPHY IMAGES WITH APPLICATIONS IN GLAUCOMA

    SRIPAD KRISHNA DEVALLA2020

    … in complex 3D biomechanical changes of the optic nerve head tissues (ONH), is indeed a well-known risk factor and considered as the only clinically treatable one. Since the inception of optical coherence tomography (OCT) technology, it has been possible for the in vivo assessment of these …

    nus Repository record

  11. Evaluating The Estimation of Neuronal Loss in Glaucoma

    Antwi-Boasiako, KwameUniversity of Houston2018

    PURPOSE: In vivo imaging with optical coherence tomography (OCT) is widely used in the diagnosis and monitoring of glaucoma and other optic neuropathies. With spectral domain OCT (SD OCT), cross-sectional images of the retinal nerve fiber layer (RNFL), optic nerve head (ONH) and the macula can be …

    houston Repository record

  12. High-speed Fourier domain Optical Coherence Tomography for structural and functional imaging of the retina

    Srinivasan, Vivek JayMassachusetts Institute of Technology2008

    Optical Coherence Tomography (OCT) is an emerging optical biomedical imaging technology that enables cross-sectional imaging of scattering tissue with high sensitivity and micron-scale resolution. In conventional OCT, the reference arm path length in a Michelson interferometer is scanned in time to …

    mit Repository record

  13. Knowledge Mining In The Clinical Assessment Of Glaucoma

    Zhu, H.City, University of London2010

    … be characterized by structural changes in the optic nerve head (ONH) and retinal nerve fibre layer (RNFL) that can be evaluated by various retinal-imaging techniques such as scanning laser polarimetry and optical coherence tomography (OCT). The structural damage can lead to functional damage in …

    city-london Repository record

  14. Glial Changes and Role of Connexin43 in a Laser-induced Rodent Model of Retrobulbar Optic europathy

    Papchenko, TarasResearchSpace@Auckland2013

    Purpose: To establish a novel model of rodent optic nerve damage in order to investigate glial changes occurring in retrobulbar portion of the optic nerve after the injury and to facilitate development of neuroprotective agents. Methods: Rats (200-250g) were first anaesthetised via intraperitoneal …

    auckland-ms Repository record

  15. A study of case finding for chronic open angle glaucoma by UK community optometrists

    Myint, JoyCity University London2013

    … is largely based on a triad of tests: optic nerve head assessment, tonometry, and visual fields. There has been little research into optometrists’ COAG case-finding strategies. Chapter 2 reports on a national survey regarding COAG case-finding methodologies and referral criteria. Survey …

    city-london Repository record

  16. Bedeutung zirkulatorischer retinaler Ergebnisse zur Differenzierung des Normaldruckglaukoms vom primären Offenwinkelglaukom

    Mahlke, JuliaPublikationsserver der RWTH Aachen University2004

    … in the perfusion and lesser perfusion of the optic nerve head are considered to be the cause. Wether these come into existence or are a secundary consequence of the increase in intraocular pressure, is still left to discussion. In general the open-angle glaucoma is rather attributed to the …

    aachen Repository record

  17. Fluoreszein-Angiographie und Progression des Glaukoms

    Koch, Eva CharlottePublikationsserver der RWTH Aachen University2011

    … western world, characterized by damage of the optic nerve and visual field loss. Various theories have been proposed to explain the pathogenesis of glaucoma. The pathogenetic concepts may be divided in a mechanical, pressure-related and a vascular approach. In the vascular theory a low …

    aachen Repository record

  18. Longitudinal Evaluation of Retinal Capillaries in Experimental Glaucoma

    Musial, Gwen ElizabethUniversity of Houston2020

    … RPC perfusion relate to changes in the retinal nerve fiber layer (RNFL) over time in a non-human primate (NHP) model of experimental glaucoma (EG). Methods: First, the longitudinal repeatability of quantifying manually segmented RPCs acquired using adaptive optics scanning laser ophthalmoscope …

    houston Repository record

  19. The Impact of a Scleral Lens on the Eye

    Walker, Maria K.University of Houston2021

    … LZR changes the intraocular pressure (IOP) and optic nerve head minimum rim width (MRW). Methods: (1) In normal subjects (n=15) wearing SL for 8-hour, basal and FR tear samples were collected, and immunomodulatory molecules were quantitated using Luminex multiplex immunoassay and compared …

    houston Repository record

  20. A novel particle-based in situ gelling system for delivering hydrogen sulfide at a sustained rate for potential application in glaucoma and retinal neurodegeneration

    Verma, RichaCreighton University2017

    … neurodegeneration of retina ganglion cell and optic nerve head. If left untreated it may cause blindness. Current therapies help in lowering the IOP, however, it is the neurodegeneration which plays a key role in blindness. Hydrogen sulfide functions both as a neuroprotectant and IOP lowering …

    creighton Repository record

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