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 20 of 715 for “"Retinal"”.
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Retinal mophology and intelligence
… To investigate the relationship between retinal morphometric measures and intellectual abilities among adults with overweight and obesity. Methods: Adults between 25-45 years (N=55, 38 females) with overweight or obesity (BMI ≥25.0 kg/m2) underwent an optical coherence tomography (OCT) …
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Functionally non-adaptive retinal plasticity in rat models of human retinal degenerative disease
… used for evaluating potential therapies for retinal disease has significant limitations. A new model is proposed to account for these limitations: the visual adaptation model. The visual adaptation model was developed to provide a novel approach for testing potential treatments for retinal …
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Apoptosis in retinal photoreceptor degeneration.
Apoptosis in retinal photoreceptor degeneration.
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Genetic Networks Modulating Retinal Injury
… networks that underlie the temporal changes of retinal wound healing. Gene expression changes in the injured rat retina were analyzed with microarray technology, genetic linkage analysis of gene expression, and higher-level bioinformatic analyses. This work yielded three complementary insights. …
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Retinal vessel segmentation using textons
Segmenting vessels from retinal images, like segmentation in many other medical image domains, is a challenging task, as there is no unified way that can be adopted to extract the vessels accurately. However, it is the most critical stage in automatic assessment of various forms of diseases (e.g. …
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Redox mechanisms in retinal cells
… key underlying component in the pathogenesis of retinal diseases, including glaucoma, diabetic retinopathy and age related macular degeneration (AMD). Intracellular and extracellular anti-oxidants counteract oxidative stress to prevent tissue damage and subsequent disease. The transcription …
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Redox biology in retinal degeneration
… legally blind by age 40 due to the loss of retinal photoreceptors. The difficulty in finding a treatment relies on the complexity of its genetics. Although more than 3,000 mutations have been described to cause it, about 40-50% of RP cases still correspond to unknown patterns. In most cases, …
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Experimental porcine models of retinal ischemia
Retinal ischaemia resulting from e.g. diabetes, vein thrombosis or arterial occlusion, is one of the major causes of visual impairment and blindness. Although new methods of treatment are being developed, there is still a need for more effective pharmacological forms of treatment. The aim of this …
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Retinal ensemble coding under dynamic conditions
Spike trains of retinal ganglion cells transfer visual information from the eye to the brain. Since natural scenes comprise several visual features, this study investigates how the activity of retinal ganglion cells encodes motion information under dynamic light intensity conditions. Multiple …
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Optical coherence tomography for retinal diagnostics
… optical coherence tomography (PS-OCT) for retinal nerve fiber layer (RNFL) birefringence measurement and dual-wavelength photothermal optical coherence tomography (DWP-OCT) for microvasculature blood oxygen saturation (SO2) measurement. In the study, a single-mode-fiber based …
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Artifact removal in digital retinal images
… impairment that could be addressed or prevented. Retinal imaging is a key step in the diagnosis and follow-up of major causes of visual impairment. As much as 20% of retinal images collected in the population are affected by artifacts, that render them ungradable both by expert graders and by the …
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Studies on bovine eye retinal calcineurin
Calcineurin (CaN), a member of ser/thr protein phosphatase, was cloned from bovine retina. The peptide sequence of CaN A subunit is consisted of 511 amino acid residues. A 10 amino acid (A-T-V-E-A-I-E-A-D-E-A) deletion before the autoinhibitory domain was observed in bovine retina CaN A compared to …
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Mechanisms of microglia induced retinal degeneration
Retinal neurodegenerative diseases including age-related macular degeneration(AMD), retinitis pigmentosa (RP), diabetic retinopathy (DR) and glaucoma arecharacterized by irreversible vision loss and currently have very limited therapies.Evidence has suggested the immune profile and inflammatory …
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Retinal function in deaf-blind syndromes
A variety of disorders can cause retinal degeneration and hearing impairment, and it is of great value to have an early diagnosis since there is a large variation in phenotype and prognosis both within and between the different disorders. The general aim of this thesis was to characterize the …
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Power limits influencing retinal prosthesis design
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2001.
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Ablation of Retbindin, the Riboflavin Binding Protein, Exacerbates Retinal Degenerative Phenotypes in Mouse Models of Human Retinal Diseases
… the effect of Rtbdn ablation in these retinal degenerative models in order to elucidate the function of this novel protein in retinal health and disease. Although, the ablation of Rtbdn alone (Rtbdn-/-) had no deleterious effects on retinal function up to postnatal day (P) 120, …
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Identifying the Preferred Retinal Locus for Reading
… central vision loss (CVL) often adopt a specific retinal location, known as the preferred retinal locus (PRL), outside of the region of loss to fixate targets in the visual field. The PRL is most often measured using simple fixation tasks. It has been reported that this location on the retina, …
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Functional Dynamics of Primate Retinal Ganglion Cells
… and temporal contrast signals. The responses of retinal ganglion cells to such signals provide the means to explore such processing in the retina. Most primate retinal ganglion cells fall into two broad classes, M and P, which have many anatomical and physiological differences. The responses of M …
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