Browsing by Subject "Coherència (Òptica)"
Now showing items 1-14 of 14
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Asymmetry of retinal physiological measurements in young adults measured with optical coherence tomography
(Universitat Politècnica de Catalunya, 2014-06)
Master thesis
Open AccessIntroduction: Optical coherence tomography (OCT) is a useful technique to assess the retina. In this study, we explored the physiological inter-ocular asymmetry of several retinal parameters in a sample of young Caucasian ... -
Averaging of collected-power fluctuations by a multiaperture receiver system
(SPIE-INT SOCIETY OPTICAL ENGINEERING, 1996-10-31)
Article
Open AccessWhen a large aperture is used to collect light propagated through the atmosphere, it performs an average operation on the irradiance fluctuations, resulting in collected-power fluctuations that are not as large as those ... -
Healing indicators after pterygium excision by optical coherence tomography
(2015-05-01)
Article
Open AccessPurposeTo establish the sequence of tomographic changes in the tissue recovery process after pterygium excision and to propose healing indicators.; MethodsOptical coherence tomography (OCT) images were taken at 1week, 1, ... -
Homodyne laser radar system for surface displacement monitoring
(SPIE-INT SOCIETY OPTICAL ENGINEERING, 2001-03-31)
Article
Open AccessA prototype of a homodyne laser radar system for surface displacement monitoring using the reference beam technique is presented. The prototype is very simple, is easy to align and focus, and is able to measure the velocity ... -
Optimization of a SS-OCT with a focus tunable lens for enhanced visualization of ocular opacities
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2019)
Conference lecture
Restricted access - publisher's policyOptical methods have been recently used to perform objective assessment of crystalline lens and corneal opacities. Swept-source optical coherence tomography (SS-OCT) enables measurements of the back-reflected or back-scattered ... -
Reduction of foveal bulges and other anatomical changes in fellow eyes of patients with unilateral idiopathic macular hole without vitreomacular pathologic changes
(2017-08-23)
Article
Open AccessPurpose: To compare the foveal characteristics in fellow eyes (FE) of patients with unilateral idiopathic macular hole without vitreomacular pathologic changes with eyes of healthy controls. Methods: Forty-seven FE and 52 ... -
SAR interferometric coherence in wide band systems
(VSP BV, 2000-02-28)
Article
Open AccessThis paper presents a study of the interferometric coherence aimed to the understanding of the main sources of phase error of an operative wide band system. This objective is accomplished by finding a theoretical expression ... -
Uso de la OCT en casos de glaucomas secundarios
(Universitat Politècnica de Catalunya, 2019-01-10)
Bachelor thesis
Open AccessLa tomografía de coherencia óptica (OCT), es una prueba de diagnostico por imagen, no invasiva que no requiere contacto ocular, y permite observar imágenes transversales por secciones de tejidos vivos del ojoentiempo ... -
Validez del ratio espesor del complejo de células ganglionares maculares respecto al espesor retiniano total en la detección del glaucoma en nuestro medio
(Universitat Politècnica de Catalunya, 2014-12-12)
Master thesis
Open AccessEn la actualidad las pruebas anatómicas para el diagnóstico y seguimiento en glaucoma, cada vez tienen más relevancia en la práctica clínica. La utilización de la tomografía de coherencia óptica es básica en las consultas ... -
Variations of OCT measurements corrected for the magnification effect according to axial length and refractive error in children
(2018-01-02)
Article
Open AccessThe aim of this paper was to examine the distribution of macular, retinal nerve fiber layer (RNFL) thickness and optic disc parameters of myopic and hyperopic eyes in comparison with emmetropic control eyes and to investigate ... -
Visual and morphological characteristics in a pre-treated exudative Age-Related Macular Degeneration population
(Universitat Politècnica de Catalunya, 2017-06-22)
Master thesis
Open AccessLa degeneració macular associada a l’edat (DMAE) és la principal causa de ceguesa legal en països desenvolupats. La DMAE exudativa, en la qual se centra aquest estudi, cursa amb neovascularització coroïdal originant una ... -
Whats biomarkers explain about pterygium OCT pattern
(2016-01-01)
Article
Open AccessBackground Optical coherence tomography (OCT) has become a very useful tool to study in vivo different ocular structures and to improve differential diagnosis and management of many ocular pathologies. This study aims ... -
Whole anterior segment and retinal swept source OCT for comprehensive ocular screening
(2021-03-01)
Article
Open AccessWhole eye visualization and morphometry are of high relevance in clinical practice. However, most standard ophthalmic OCT instruments are dedicated either to retinal or to anterior segment imaging. We demonstrate a swept ...
