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 144 for “"cornea"”.
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Ultrastructural studies of cornea and sclera
… 1982), was repeated using fresh, equilibrated cornea, confirming their finding that the plot of interfibrillar spacing against liydration is a linear relationship. Intermolecular spacing in cornea, sclera and rat-tail tendon was shown to increase rapidly over the hydration range H=O to H≈1, …
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The canine cornea in tissue culture
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Surgery and Medicine, 1961
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Neuropathology and sensitivity in the keratoconic cornea
Corneal touch threshold (CTT) was investigated by aesthesiometry in patients with keratoconusq with and without contact lens wear. Using a matching control group it was established that CTT was significantly higher for the central corneal position in keratoconus. No difference inCTT was found in …
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Calcitonin Gene-Related Peptide Promotes Wound Healing of Cornea
Corneal wounds represent the most common type of ocular injury. Injuries to the corneal tissues can result in significant damage with loss of epithelial tissue and nerve fibers, causing a delay in healing time and ultimately problems with vision. Sensory neurons located throughout the cornea exert …
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Assessing the Biomechanical Properties of Cornea using Optical Coherence Elastography
… to assess the biomechanical properties of cornea based on low-coherence optical imaging, focusing on optical coherence elastographic techniques, to meet the growing demand for noninvasive high-resolution tissue characterization with improved diagnosis and treatment of ocular diseases. The …
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In vivo confocal microscopy of the cornea in health and disease
The cornea is the transparent structure forming the anterior eye. Principal functions include: transmitting and focusing light onto the retina, containing intraocular pressure, and providing a protective interface with the environment. The specialized microstructural organization of the cornea is …
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Understanding cornea stem cells during homeostasis and wound healing in Xenopus
Corneal development, homeostasis, and wound healing are supported by specialized stem cells, that include the cornea epithelial stem cells (CESCs). Damage to or loss of these cells results in blindness and other debilitating ocular conditions. Here, we focus on cornea epithelial stem cell …
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Ontogenesis of the cornea and ciliary body : a morphological and molecular study
The anterior segment of the eye includes the cornea, lens, iris, ciliary body and trabecular meshwork, with each of these elements playing a vital role in the maintenance of vision. The primary objective of this research is to contribute towards the understanding of how specific genes control …
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Heartbeat Optical Coherence Elastography: A Method for Passive Biomechanical Assessment of the Cornea
… the biomechanical properties of the cornea are explored using a novel, completely passive, biomechanical analysis technique termed heartbeat optical coherence elastography (Hb-OCE). This technology enables mechanical characterization of the cornea with applications in disease …
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Minimally Invasive Characterization and Intraocular Pressure Measurement via Numerical Simulation of Human Cornea
Finally, the proposed method is applied in the simulation of a particular type of refractive surgery, picosecond laser keratomileusis (PLK), and compared with reported clinical outcomes.
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The Transcriptional Regulation Of Flagellin-Induced Innate Protection Of The Cornea: Role Of Irf1 And Atf3
<p>Pre-exposure of the cornea to TLR5 ligand flagellin induces profound mucosal innate protection against infections by reprogramming gene expression. This study explored the flagellin-induced modifications of transcription factor expression and function, specifically of IRF1 and ATF3 in corneal …
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Investigating the role of CYP26 and retinoic acid signaling regulation in vertebrate cornea and lens regeneration
… naturally regenerate a lost lens from the outer cornea epithelium after it is triggered to do so by signals from the neural retina. The signals have been widely studied, and FGFs are reported to play a key role in causing the cornea to transform into a lens. However, the factors that make the …
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Isolation and Characterization of a Novel Gene, xMADML, Involved in Xenopus Laevis Eye Development Using Cornea -Lens Regeneration
One clone was isolated from the cDNA library on the basis of its embryonic expression pattern and its sequence similarity to human NRBP and mouse MADM genes. This gene, xMADML, was characterized through molecular analysis, which showed both similarity and important differences to MADM, and protein …
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A theoretical model of the cornea as a thin shell of variable thickness in relation to radial keratotomy
… study of the deformation fields of the cornea under internal pressure is presented. The general elasticity equations describing a thin shell of variable thickness are solved using finite difference techniques. To gain insight into the natural corneal structure, the constant thickness …
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Vip And Host Immunity
… to examine how VIP regulates host immunity and corneal healing, specifically, its control of growth factors and TLR expression in the P. aeruginosa infected cornea. Firstly, VIP treatment increased growth factor expression (EGF, GHF, FGF and VEGF) in infected cornea. Notably, treatment with a …
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New insights into cornea-lens regeneration in Xenopus laevis: the role of Wnt/beta-catenin signaling and the regenerative capacity of the limbal region
… the complete regeneration of the lens from the cornea epithelium. To fill in a large void in our current knowledge of the cell signaling pathways necessary for regeneration, we investigated the Wnt/β-catenin signaling pathway in the context of lens regeneration (Chapter 2) as it has been shown …
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Microstructural Characteristics and Dynamics of Cornea after Phacoemulsification. Therapeutic Options /// Микроструктурни характеристики на роговицата и тяхната динамика след факоемулсификация – възможности за повлияване
Основна цел на този научен труд е да направи оценка на микростуктурните характеристики на здрави роговици след стандартизирана факоемулсификация с имплантация на заднокамерна ИОЛ, чрез приложение на съвременни високотехнологични методи за изследване и визуализация на роговицата, както и да се …
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