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Dissertations / Theses on the topic 'Anterior Segment'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Oehring, Daniela. "Ocular biomechanics of the anterior segment." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/10647.

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The thesis investigates methods of examining corneal biomechanics using non-contact tonometry and introduces novel techniques to investigate corneal material properties in vivo. A comprehensive systems analysis of the CorvisST (CST) and Ocular Response Analyser (ORA) was performed. Pressure sensors were used to characterisation the airflow produced by the CST and the ORA. Distinct differences were observed between the central airflow pressures between the two devices: the CST pressure was higher and of shorter duration. Scheimpflug high-speed imaging via the CST allowed components of the corne

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2

Siddiqi, Rizwana. "Anterior segment morphology in angle closure." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/anterior-segment-morphology-in-angle-closure(75cd5598-a53c-4f04-b67b-37130210bbdc).html.

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Primary Angle Closure Glaucoma (PACG) is a worldwide leading cause of irreversible blindness much more prevalent in Asia than in European-derived populations. Patterns of ethnic differences may account for prevalence variation of the disease. Recent papers have reported a predicted rise in European-derived populations. Ocular risks associated with PAC(G) include an axially small, hypermetropic eye with a large lens. Potentially, there are patients in the UK with 'at risk' ocular biometrics predisposing them to PAC(G). Biometric disparities between ethnicities infer morphological variation of P

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3

Lee, Graham Andrew. "Advances in anterior segment disease / Graham A. Lee." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18442.pdf.

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4

Sinha, Shantanu (Shantanu Sanjay). "Extending the reach of anterior segment ophthalmic imaging." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106046.

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Thesis: S.M., Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 68-77).<br>Eye exams via a slit lamp are critical in screening for conditions such as cataracts, corneal opacities and pterygia early on to avert vision loss. The slit lamp, however, is a purely qualitative optical device that is bulky, expensive, can cause eye discomfort due to light sensitivity. It also requires a trained physician to operate, making it unsuitable for large-sc

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5

McGinnigle, Samantha. "Anterior segment anomalies and effects on visual quality." Thesis, Aston University, 2013. http://publications.aston.ac.uk/20904/.

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The tear film, cornea and lens dictate the refractive power of the eye and the retinal image quality is principally defined by diffraction, whole eye wavefront error, scatter, and chromatic aberration. Diffraction and wave aberration are fundamentally pupil diameter dependent; however scatter can be induced by refractive surgery and in the normal ageing eye becomes an increasingly important factor defining retinal image quality. The component of visual quality most affected by the tear film, refractive surgery and multifocal contact and intraocular lenses is the wave aberration of the eye. Thi

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6

Kozariychuk, N. Ya, Ya I. Penishkevych, T. B. Sykyrytska, and O. P. Melnyk. "Modern technologies on managing anterior eye segment penetrating injurie." Thesis, БДМУ, 2017. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/16907.

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7

Patel, Hetal. "Biomechanical aspects of the anterior segment in human myopia." Thesis, Aston University, 2011. http://publications.aston.ac.uk/14871/.

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The thesis investigates the relationship between the biomechanical properties of the anterior human sclera and cornea in vivo using Schiotz tonometry (ST), rebound tonometry (RBT, iCare) and the Ocular Response Analyser (ORA, Reichert). Significant differences in properties were found to occur between scleral quadrants. Structural correlates for the differences were examined using Partial Coherent Interferometry (IOLMaster, Zeiss), Optical Coherent tomography (Visante OCT), rotating Scheimpflug photography (Pentacam, Oculus) and 3-D Magnetic Resonance Imaging (MRI). Subject groups were employe

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8

Williams, Dominic. "Automatic segmentation of anterior segment optical coherence tomography images." Thesis, University of Liverpool, 2015. http://livrepository.liverpool.ac.uk/2013626/.

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Automatic segmentation of anterior segment optical coherence tomography (AS OCT) images provides an important tool to aid management of ocular diseases. Having precise details about the topography and thickness of an individual eye enables treatments to be tailored to a specific problem. OCT is an imaging technique that can be used to acquire volumetric data of the anterior segment of the human eye. Fast automatic segmentation of this data, which is not available, means clinically useful information can be obtained without the need for time consuming error-prone manual analysis of the images.

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9

Hosseini, Kamran. "Optical biopsy in the anterior segment of the eye." [Maastricht] : Maastricht : [Maastricht University] ; University Library, Universiteit Maastricht [host], 2008. http://arno.unimaas.nl/show.cgi?fid=14564.

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10

Chandler, Heather Lynn. "Epithelial-mesenchymal transition in the anterior segment of the eye." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1154533588.

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11

Tuten, William Scott. "Anterior Segment Optical Coherence Tomography-Based Phakometry Measurements in Children." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243629782.

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12

Li, Yan. "Image Processing and Clinical Applications of Anterior Segment Optical Coherence Tomography." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1212436115.

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13

Quince, Zachery. "Optical coherence elastography for the measurement of anterior segment biomechanical properties." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/236255/2/Zachery%2BQuince%2BPhD%2BThesis%282%29.pdf.

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This thesis developed a novel optical coherence elastography method to characterise tissue biomechanical properties in the anterior eye. The developed method applies a static force to deform the tissue and combines optical coherence tomography imaging with image processing to track the deformation and extract tissue mechanical properties. This project represents the first step towards developing a clinically viable method to comprehensively measure the mechanical properties of the anterior segment of the eye.

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14

Nisa, Georgette. "The prevalenceof anterior segment and crystalline lens changes in a Nicaraguan population." Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-54213.

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Abstract Aim: The purpose of this study was to find the prevalence of different ocular changes in the anterior segment of the eye and changes in the crystalline lens among Nicaraguan population. Method: The study was done during a journey to Nicaragua with the organization VFA and Synoptik that lasted for two weeks in March/April. There were a total of 134 participants with 71 females and 63 males. The average age of the study participants was 50 (±20) years and the age ranged from 7 to 97 years. The total sample size was collected in the three towns that we visited during the journey: Ticuant

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15

Shah, A. A. "An investigation into anterior segment anatomy and genetics of pigment dispersion syndrome." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1458124/.

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Pigment dispersion syndrome (PDS) is an ocular condition predisposing to glaucomatous optic neuropathy in patients at a relatively young age. Concavity of the iris is considered to be important in the pathogenesis of PDS, however, it is also appears to be a feature of non-PDS eyes, particularly in young myopes. Much of the current understanding of anterior segment anatomy is derived from studies using ultrasound biomicroscopy, a relatively invasive imaging modality that involves direct ocular contact. Anterior-segment optical coherence tomography (AS-OCT) allows imaging of the anterior segment

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16

Fournstedt, Daniel. "Jämförelse mellan Scheimpflug imaging och anterior segment OCT i mätning av Corneal tjocklek." Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-44694.

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Purpose: The purpose of this study was to compare corneal thickness measured both centrally and midperipherally, between two instruments using different measuring principles. The study also looked at correlation between corneal thickness and intraocular pressure (IOP). Methods: Central and midperipheral corneal thickness was measured on the right eyes of 31 subjects with two different instruments. Instruments were Scheimpflug-camera from Bon Sirius and an AS/OCT from Optos. Measurements were taken on central cornea (CCT) and midperipheral (nasal (NCT), temporal (TCT), superior (SCT) and inferi

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17

Ruggeri, Marco. "Extended Depth Optical Coherence Tomography for Anterior Segment and Accommodation Imaging in Real-Time." Scholarly Repository, 2011. http://scholarlyrepository.miami.edu/oa_dissertations/686.

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The changes in the human crystalline lens shape and its internal structure during accommodation and with aging are a fundamental component of the dynamic mechanism of accommodation and presbyopia, the loss of near vision with age. A better understanding of the crystalline lens changes during accommodation will help in developing new treatments to correct for presbyopia. The goal of this dissertation is to design and develop an imaging system to study the dynamic changes in lens shape during accommodative response. An imaging system based on spectral domain optical coherence tomography (SD-OCT)

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18

Jiang, Y. "Changes in anterior segment configuration in primary angle-closure suspects after prophylactic laser iridotomy." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1471276/.

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Aims To determine the immediate and longitudinal changes in anatomical configurations of the anterior chamber angle in primary angle-closure suspects eyes treated and untreated by laser peripheral iridotomy (LPI). This research project also aims at investigating associations of angle configuration, dynamic iris behaviours and factors associated with outcomes of prophylactic LPI in primary angle-closure (PAC) suspects. Methods Study subjects were participants in a prospective randomised controlled clinical trial. Each participant was treated by LPI in one randomly selected eye, with the fellow

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19

Luz, Reginaldo Adalberto de. "Vigilância epidemiológica de endoftalmite e síndrome tóxica do segmento anterior após cirurgias de catarata: identificação e seleção de marcadores." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/7/7141/tde-06082014-163001/.

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Introdução: Entre os possíveis Eventos Adversos (EA) mais importantes após cirurgias de catarata estão a endoftalmite, termo que define a infecção intraocular e a Síndrome Tóxica do Segmento Anterior (TASS), que consiste na reação inflamatória aguda pós-cirúrgica. Contudo, um sistema de vigilância epidemiológica (VE) da ocorrência destes EA não é uma realidade no Brasil, o que dificulta o monitoramento da incidência, detecção precoce de surtos e as medidas de prevenção. Devido as especificidades no campo da oftalmologia, nem sempre o enfermeiro está suficientemente instrumentalizado para contr

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20

Beckers, Helena Jacqueline Maria. "Ultrastructural studies on the innervation of the anterior eye segment and eye related peripheral ganglia." Maastricht : Maastricht : Universitaire Pers Maastricht ; University Library, Maastricht University [Host], 1993. http://arno.unimaas.nl/show.cgi?fid=5747.

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21

Fris, Miroslav. "The effect of single and repeated ultraviolet radiation on the anterior segment of the rabbit eye." Doctoral thesis, Norwegian University of Science and Technology, Department of Neuroscience, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2110.

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<p>Over the last two decades, depletion of stratospheric ozone has increased the flux of ultraviolet radiation (UVR) at the surface of the earth and the cumulative effect of UVR has become an important aspect of UV-induced eye damage. Epidemiological studies generally assess the chronic, low dose UVR exposure conditions while the laboratory animal experiments usually examine the acute response to high dose exposures. Thus, the study conditions are dissimilar and we are not free to assume that the two variant experimental settings necessarily trigger the same damage or repair mechanism. In orde

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22

Robles, Victor Adrian. "Automated image analysis of corneal structures in anterior-segment optical coherence tomography and in-vivo confocal microscopy images." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5988.

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Optical Coherence Tomography (OCT) is a noninvasive imaging modality that has significantly contributed to the quantitative assessment of ocular diseases. Another tool available to ophthalmic clinicians is in-vivo confocal microscopy, which allows anatomical structures to be observed live at the cellular level. Incorporating both of these modalities for imaging the cornea allows us to take structural measurements to characterize disease-related changes in corneal anatomy. Notable diseases that directly impact or correlate with corneal structures include glaucoma and diabetic neuropathy. Given

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23

Ylikärppä, R. (Ritva). "Type XVIII and XV collagens: primary structure of human alpha1(XVIII) chain, phenotypic studies of type XVIII collagen single null and type XVIII and XV collagen double null mice." Doctoral thesis, University of Oulu, 2003. http://urn.fi/urn:isbn:9514271416.

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Abstract In this thesis study, the primary structure of the human α1(XVIII) polypeptide was elucidated, its tissue distribution was studied, and the phenotypic changes in the mouse eye due to lack of type XVIII collagen in a knock-out mouse model were studied further. In addition, the consequences of simultaneous lack of both type XVIII and XV collagen were studied in a mouse model lacking both of these proteins. Two variant forms of human α1(XVIII) polypeptide were identified in this study, although, to date, a third form has also been characterized. The analysis of tissue distribution of t

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24

Bachu, Rinda Devi. "Development and Evaluation of a Novel Microemulsion of Dexamethasone and Tobramycin for Topical Ocular Administration." University of Toledo Health Science Campus / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=mco1512562325333526.

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25

Kohandani, Tafreshi Marzieh. "Reconstruction 3D du segment antérieur oculaire par échographie haute fréquence." Thesis, Brest, 2014. http://www.theses.fr/2014BRES0003.

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Une des applications de l’échographie médicale est celle de l’ophtalmologie qui pose de nombreux problèmes spécifiques liés en partie à la faible dimension de l’oeil et à la précision importante que requièrent les mesures intraoculaires. En effet, avec le développement de la chirurgie réfractive qui regroupe ensemble des techniques capables de corriger les erreurs de réfraction et l’avènement des implants intraoculaires, le chirurgien ophtalmologiste est amené à surveiller la tolérance et les effets secondaires de ces implants sur les structures du segment antérieur. L’échographie à haute fréq

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26

Varikooty, Jalaiah. "Ocular Discomfort Upon Tear Drying." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1239.

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<b>Purpose:</b> Assess the relationship between tear film drying and sensation between blinks. <b>Methods:</b> MATLAB sampled a slitlamp video camera, a potentiometer and a microphone while subjects kept one eye open for as long as possible. 23 subjects rated the intensity of the ocular sensation while video and voice data were collected simultaneously. The tear drying on the cornea was measured. <b>Results:</b> The sensation was triphasic. Two linear functions described the latter 2 parts of the data (r ≥ 0. 95). The correlation between TBUT and the elbow in the t

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27

Lehman, Bret M. "Validation of Optical Coherence Tomography-Based Crystalline Lens Thickness Measurements in Children." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1242248244.

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28

Myneni, Sudha Rani [Verfasser]. "Role of the anterior Hox genes in segment-specific NB7-3 lineage development in the embryonic central nervous system of Drosophila melanogaster / Sudha Rani Myneni." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/1112624902/34.

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29

Hussain, Syed Asad. "Surgery of the anterior segment of the eye assisted by ultrashort pulse laser: optimisation of the parameters with respect to tissular transparency and cell viability." Palaiseau, Ecole polytechnique, 2014. https://tel.archives-ouvertes.fr/tel-01097301/document.

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Le but de ce travail a été d'étudier les différents effets microscopiques et macroscopiques susceptibles de nous aider à améliorer les procédures de chirurgie oculaire assistée par les lasers à impulsions ultra-courtes ; plus particulièrement en kératoplastie (greffe de cornée), qui nécessite des systèmes lasers opérationnels dans les tissus pathologiques et donc de diffusant fortement la lumière. Antérieurement, le groupe Optique Photonique Santé (OPS) du Laboratoire d'Optique Appliquée (LOA) a identifié 1650 nm comme étant une longueur d'onde optimale à laquelle les processus de diffusion de

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30

Mohamed, Yousoof Saira Bahnu. "Genomic and functional approaches in identification and characterisation of novel eye disease genes." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/10055.

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31

Sakata, Lisandro Massanori. "Avaliação dos aspectos morfológicos dos olhos normais e dos olhos com fechamento angular primário antes e após a realização da iridotomia: comparação através da gonioscopia, biometria e biomicroscopia ultra-sônica." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/5/5149/tde-09102014-095907/.

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INTRODUÇÃO: O glaucoma de ângulo fechado é reconhecido como uma das principais causas de cegueira mundial. A iridotomia representa o tratamento de eleição nos casos com fechamento angular primário, entretanto, este procedimento pode não ser suficiente para proporcionar abertura do ângulo irido-corneano, controle da pressão intra-ocular (PIO) e estabilização do processo da lesão glaucomatosa. O presente estudo tem como objetivo avaliar a morfologia do segmento anterior do olho em uma amostra de pacientes brasileiros, e realizar uma comparação entre olhos normais (sem sinais de fechamento angula

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32

Kezic, Jelena Marie. "A study of the monocyte-derived cell populations of the uveal tract and retina in homeostatic conditions and during the early stages of ocular autoimmune disease." University of Western Australia. School of Anatomy and Human Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0084.

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The eye contains closely related but widely different tissues, offering a unique opportunity to investigate the phenotype and function of monocyte-derived cell populations within functionally unique microenvironments in a single complex organ. The uveal tract and retina contain rich networks of immune cells that reside and traffic through the eye, these cells having been implicated in various ocular inflammatory processes and immune-mediated diseases. One such inflammatory condition is human posterior uveitis, an autoimmune disease mainly affecting the retina. As current treatments for posteri

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33

CHARLEUX, MARC. "Le collagene type iv d'origine placentaire humaine, biomateriau viscoelastique transparent : etude experimentale, efficacite et biocompatibilite dans le segment anterieur de l'oeil animal." Lyon 1, 1992. http://www.theses.fr/1992LYO1M43B.

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34

JAIME, SONIA. "Complications immediates et secondaires des plaies penetrantes du segment anterieur (limbe inclus, corps etrangers intra-oculaires inclus, sequelles eloignees exclues)." Lyon 1, 1988. http://www.theses.fr/1988LYO1M213.

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35

Gonçalves, Lenise Garbelotti. "Análise das alterações corneanas e do segmento anterior de olhos de coelhos em crescimento pelo sistema duplo Scheimpflug e discos de Plácido." Botucatu, 2018. http://hdl.handle.net/11449/154544.

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Orientador: Cláudia Valéria Seullner Brandão<br>Resumo: Objetivou-se neste estudo descrever e analisar as alterações ceratométricas da curvatura anterior e posterior da córnea, ceratometria total, espessura corneana, volume e profundidade de câmara anterior, durante o crescimento de coelhos por meio do sistema combinado de disco de Plácido e duas câmeras de Scheimpflug. Para isso foram estudados 28 coelhos (Oryctolagus cuniculus) do grupo genético de Botucatu, distribuídos aleatoriamente em dois grupos experimentais. Os animais do grupo1 (n=15) foram avaliados aos dois (M2), três (M3), quatro

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36

Santos, Rodrigo Silva e. [UNESP]. "Caracterização da rigidez póstero-anterior da coluna lombar in vivo: uma análise biomecânica." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/105354.

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Made available in DSpace on 2014-06-11T19:34:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-02Bitstream added on 2014-06-13T20:45:40Z : No. of bitstreams: 1 santos_rs_dr_guara.pdf: 2269496 bytes, checksum: 15510607497762c601558887cb80984f (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A mobilização póstero-anterior consiste numa técnica de terapia manual que tem a finalidade de detectar alterações no padrão normal e na amplitude dos movimentos das articulações intervertebrais em pacientes com lombalgia. Mecanicamente, define-se como uma sobrecarga

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Yamane, Iris de Souza. "Avaliação de parâmetros tomográficos de córnea e segmento anterior e de variáveis desencadeadas pela resposta ocular à tonometria de não contato." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/5/5149/tde-10102012-103707/.

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OBJETIVO: avaliar e correlacionar parâmetros tomográficos de segmento anterior e parâmetros biomecânicos de córnea entre si, com a idade e o gênero de pacientes com olhos normais. MÉTODOS: um estudo clínico de série de casos com intervenção diagnóstica foi realizado, envolvendo um olho selecionado aleatoriamente de 235 pacientes (235 olhos). Os pacientes foram submetidos a exame oftalmológico completo, incluindo avaliação tomográfica (Pentacam) e biomecânica (ORA). Parâmetros avaliados pelo Pentacam: K1, K2, K Front Max , Astig, ISV, IVA, KI, CKI, IHA, IHD, BAD D, BAD Df, BAD Db, BAD Dp, BAD D

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MARTINS, Islane Cristina. "Morfologia do círculo arterial cerebral em humanos: hipoplasia do segmento A1 da artéria cerebral anterior e padrão fetal da artéria cerebral posterior." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/20007.

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Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-07-25T12:54:13Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Islane Cristina Martins.pdf: 2501962 bytes, checksum: f8da8fe4623e40c91559079d260f0d75 (MD5)<br>Made available in DSpace on 2017-07-25T12:54:13Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Islane Cristina Martins.pdf: 2501962 bytes, checksum: f8da8fe4623e40c91559079d260f0d75 (MD5) Previous issue date: 2016-08-26<br>FACEPE<br>O círculo arterial cerebral

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Romera, Romero Pau. "Resultados en pacientes intervenidos de glaucoma mediante esclerectomía profunda con implante uveoescleral y análisis morfológico del área quirúrgica con tomografía óptica de segmento anterior." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/663958.

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Propósito: La esclerectomía profunda no perforante es una de las cirugías de glaucoma más realizadas en nuestro medio. El propósito de esta tesis doctoral ha sido describer los resultados de los primeros pacientes intervenidos de esclerectomía profunda no perforante (EPNP) con mitomicina C e implante uveoescleral no reabsorvible de HEMA (Esnoper-Clip®) diseñado para aumentar la filtración trabecular y supraciliar. Incluimos 2 artículos pubicados en la revista Journal of Glaucoma, el primero con los resultados al año y el segundo a los dos años con un análisis del área quirúrgica mediante tomog

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40

Dehnen, Matthias [Verfasser]. "Degenerative Veränderungen des angrenzenden Segments nach anteriorer zervikaler Diskektomie und Fusion : eine Magnet Resonanz Untersuchung im Langzeitverlauf / Matthias Dehnen." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2020. http://d-nb.info/1214240763/34.

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41

Galego, Marcia Pansera. "Estudo comparativo das estruturas do segmento anterior de olhos de cães com catarata, portadores e não portadores de Diabetes mellitus, avaliadas por biomicroscopia ultra-sônica." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/10/10137/tde-21012009-144850/.

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A catarata, opacidade do cristalino ou da sua cápsula, representa uma das principais causas de cegueira em cães. A causa mais comum de catarata em cães é a alteração hereditária no metabolismo protéico da lente e a segunda, alterações metabólicas provocadas pelo Diabetes mellitus (DM). Esta é uma das endocrinopatias mais prevalentes em cães, caracterizada pela absoluta ou relativa deficiência de insulina. Altera o equilíbrio osmótico no interior da lente levando à catarata bilateral, simétrica e aguda, a qual a espécie canina é particularmente suscetível. A biomicroscopia ultra-sônica (UBM) é

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Muquillaza, Valenzuela Meliton Arturo. "Manifestaciones oculares en segmento anterior en pacientes con VIH/sida en la era pre-TARGA en el Servicio de Oftalmología del Hospital Nacional Dos de Mayo de enero a diciembre 2007, Lima – Perú." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2011. https://hdl.handle.net/20.500.12672/14943.

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Se realizó un estudio retrospectivo, descriptivo donde se revisaron 235 historias clínicas de pacientes con diagnóstico de VIH/SIDA atendidos en la consulta externa del Servicio de Oftalmología y el Servicio de Enfermedades Infecciosas y Tropicales del Hospital Nacional Dos de Mayo ingresados del 01 de enero al 31 diciembre 2007. Dichos pacientes acudieron para ingresar al protocolo de TARGA financiado por el Fondo Global. De 235 historias clínicas revisadas de pacientes con diagnóstico de VIH/SIDA, se tiene que el promedio de la edad estuvo en 34.9 ± 9.5 años. Se observa que el mayor por

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Tauste, Francés Ana. "Valoración de las alteraciones oculares y visuales asociadas al uso de lentes de contacto en trabajadores expuestos a pantallas de visualización de datos." Doctoral thesis, Universidad de Alicante, 2016. http://hdl.handle.net/10045/70349.

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Antecedentes: El elevado número de personas que trabajando con ordenador utiliza lentes de contacto plantea la cuestión sobre si la suma de estos dos factores de riesgo para la salud visual puede originar un agravamiento de las alteraciones oculares y visuales. Objetivos: Los tres objetivos principales de esta tesis fueron: 1) sintetizar el conocimiento científico sobre las alteraciones oculares y visuales relacionadas con la exposición a ordenador en usuarios de lentes de contacto entre el año 2003 y el 2013; 2) analizar la relación entre la presencia de Síndrome Visual Informático (SVI) en t

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Kelly, Devin K. "Inter-Segment Coordination Variability Post Anterior Cruciate Ligament Reconstruction." 2015. https://scholarworks.umass.edu/masters_theses_2/278.

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INTER-SEGMENT COORDINATION VARIABILITY POST ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION SEPTEMBER 2015 DEVIN K. KELLY, B.S., UNIVERSITY OF MASSACHUSETTS AMHERST M.S., UNIVERSITY OF MASSACHUSETTS AMHERST Directed by: Dr. Joseph Hamill There is an increased risk for ipsilateral graft rupture and contralateral ACL rupture following ACL reconstruction surgery (ACLR) despite return to sport clearance. The reason for this increased risk is not well understood. Previous literature has shown that decreased coordination variability is indicative of an injured system regardless of the absence of pain. PUR

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Crawford, Kathryn Schuh. "Prostanoid effects on anterior ocular segment physiology in the macaque monkey." 1992. http://catalog.hathitrust.org/api/volumes/oclc/28738916.html.

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McNabb, Ryan Palmer. "Quantitative Fourier Domain Optical Coherence Tomography Imaging of the Ocular Anterior Segment." Diss., 2013. http://hdl.handle.net/10161/7252.

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<p>Clinical imaging within ophthalmology has had transformative effects on ocular health over the last century. Imaging has guided clinicians in their pharmaceutical and surgical treatments of macular degeneration, glaucoma, cataracts and numerous other pathologies. Many of the imaging techniques currently used are photography based and are limited to imaging the surface of ocular structures. This limitation forces clinicians to make assumptions about the underlying tissue which may reduce the efficacy of their diagnoses. </p><p>Optical coherence tomography (OCT) is a non-invasive, non-ionizin

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Silla, Zenzele. "The role of lens-derived signals in the development of the corneal endothelium." Thesis, 2013. http://hdl.handle.net/10413/9847.

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Corneal endothelial development is an intricate process driven by finely tuned gene expression. Its formation is necessary for the continued normal development of the anterior segment of the eye. The presence of an inductive lens able to secrete factors such as TGFβ2 as well as the expression of Foxc1 and Pitx2 is essential to corneal endothelial development, as in the absence of any of these; the corneal endothelium fails to form. Corneal endothelial development begins as peri-ocular mesenchyme (POM) cells migrate into the space between the lens and surface ectoderm at E11.5. From E12.5, the

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Krukonis, Christopher Edward. "Development of adjacent segment disease following multilevel anterior cervical discectomy and fusion surgery." Thesis, 2017. https://hdl.handle.net/2144/26734.

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BACKGROUND: Cervical spondylosis, a degenerative disease of the spine, is a common medical condition that results in significant morbidity, loss of function, and financial burden on the healthcare system in the United States. The disease ranges in severity from axial pain, which is among the most common medical complaints encountered in healthcare, to severe neurological symptoms such a myelopathy and radiculopathy, which may require surgical intervention. Anterior cervical discectomy and fusion (ACDF) has been established as a gold standard for safe and effective surgical treatment of cervica

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Rico, del Viejo Laura. "Effect of hormonal changes on corneal biomechanical properties and anterior segment ocular perameters." Master's thesis, 2015. http://hdl.handle.net/1822/41126.

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Dissertação de mestrado em Optometria Avançada<br>Corneal biomechanics is defined as the study of the balance and the deformation of the corneal tissue under any force or pressure. Nowadays, it is receiving special attention in the ophthalmology field because detailed knowledge of corneal behavior can help to improve clinical applications as tonometry, contact lens wear and refractive surgery. The human cornea, as most biological tissues, shows a non-linear, inelastic, heterogeneous and anisotropic character that varies from point to point, from time to time and from subject to subject. It dis

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Govender, Viveshree Shalom. "Assessing the role of the transcription factor FOXC1 in the expression and regulation of the Adherens junction protein N-Cadherin during corneal endothelium development." Thesis, 2011. http://hdl.handle.net/10413/9657.

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The proper organization and differentiation of the anterior segment is pivotal for normal eye development. Neural crest-derived POM cells are key contributors to correct anterior segment formation, differentiating to form the monolayered corneal endothelium. Mice with homozygous null mutations in the forkhead transcription factor gene, Foxc1, fail to develop a proper corneal endothelium stabilized by adherens junctions, with the endothelium adhering to the lens, preventing anterior chamber separation. The aim of this study was to evaluate the interaction between Foxc1 and the adherens junction

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