Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Optic disc"”.
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Effect of assessing glaucomatous optic disc changes using automated alternation flicker comparisons of serial optic disc stereophotographs
… among automated alternation flicker, traditional optic coherence tomography(OCT), and standard automated perimetry(SAP) in detecting progression of structural and functional glaucomatous damage. METHODS: A total of 83 eyes were selected randomly from patient records at authors’ institution. Serial …
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EphB: Ephrin-B Bidirectional Signaling in Retinocollicular Mapping
Retinal ganglion cell axon exit into the optic disc and formation of the optic nerve and termination in the superior colliculus is critical for integrating both the visual field and head orientation to mediate appropriate eye movement. Expression of EphB receptor tyrosine kinases and ephrin-B …
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Structural Integrity of Eyes Diagnosed with Amblyopia. The measurement of retinal structure in amblyopia using Optical Coherence Tomography.
… others. It is critical that the reasons for this discrepancy are understood. Emerging evidence indicates that current clinical protocols for the diagnosis of amblyopia may not be sufficiently sensitive in identifying individuals who, on more detailed examination, exhibit subtle structural defects …
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Relevance and Role of Nutritional Supplements in the Ophthalmology Practice // Място и роля на хранителните добавки в офталмологичната практика
… leads to blindness, causing damage to the optic disc and neurofibrillary layer, with associated visual field defects. All available therapeutic strategies are currently limited to lowering IOP, which has been shown to improve the prognosis of the disease but does not stop its progression. …
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Idiopathic Intracranial Hypertension
… was prospectively tested. Visual fields and optic disc appearance are shown to have the greatest influence on clinical outcome. Finally, a systematic study of the evaluation of papilloedema in IIH highlights the major limitations of the widely adopted Frisen staging scheme in the condition.
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Detection and Classification of Diabetic Retinopathy Pathologies in Fundus Images
… condition of DR. The analysis of the optic disc is usually not taken into account in DR screening systems. However, there is a pathology called neovascularization that is present in advanced stages of DR, making its detection of crucial clinical importance. In order to address this …
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Evaluating The Estimation of Neuronal Loss in Glaucoma
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 …
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Characteristic distribution of peripapillary retinal nerve fibre layer oedema in acute methanol-induced optic neuropathy
… fibre layer oedema in acute methanol-induced optic neuropathy (Me-ION). Methods: This retrospective case series study included four adult patients with acute Me-ION treated at Groote Schuur hospital in Cape Town during the national alcohol ban amid the COVID-19 pandemic from 27 March 2020 to …
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Clinical profile, causes, and outcomes of optic neuritis at Groote Schuur Hospital
… therapy in patients admitted and treated for optic neuritis at a tertiary hospital in Cape Town, South Africa. Methods: A retrospective case review was conducted of 117 patients admitted to Groote Schuur Hospital and treated for optic neuritis between January 2002 and December 2012. Inclusion …
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Computer-assisted colour fundus image analysis
… cardiovascular complications. Any change in the optic disc structure, blood vessel width, blood vessel tortuosity, and presence of lesion serves as indications of the pathologies. Realizing the importance of retina image analysis in pathology detection, there has been increasing research in …
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Optic Nerve Head Image Analysis for Glaucoma Progression Detection
… 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 …
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Role of ephrinB2 and EphB4 in mouse retinal angiogenesis
… of the vessels and neovascularization of the optic disc. <br>In order to visualise the effect of the substances on physiological retinal blood vessel development, the substances were injected intravitreally in P6 or P7 mice and after seven days in room air, retinal whole mounts were prepared …
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An Evidence-Based Investigation of the Content of Optometric Eye Examinations in the UK
… vision. 95% of optometrists visited carried out optic disc assessment and tonometry and 35% of optometrists carried out all of these tests. 6% advised the SP of the increased POAG risk in those of African racial descent. The third SP presented for a private eye examination as a 59 year-old …
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Implications of dopamine D3 receptor for glaucoma: in-silico and in-vivo studies
Glaucoma is a progressive optic neuropathy and it is considered by the World Health Organization to be the cause of 12% of visual impairment and 2% of blindness. Glaucoma is characterized by alterations of optic disc and visual field. High intraocular pressure (IOP) is the main risk factor of …
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INTERRELATIONSHIPS BETWEEN MACULAR CAROTENOIDS, RETINAL MORPHOMETRY, AND COGNITIVE FUNCTION IN PERSONS WITH MULTIPLE SCLEROSIS
… in a cross-sectional study. Macular pigment optical density (MPOD) was measured via heterochromatic flicker photometry using a macular densitometer. Retinal morphometry was measured via optical coherence tomography (OCT). Serum carotenoids were quantified using high-performance liquid …