Now showing items 31-50 of 60
Rojo Badenas, Pilar (Date of defense: 2015-10-21)
This thesis proposes a method to evaluate and quantify in a precise way the peripheral refraction induced by an ophthalmic lens. The motivation for this work stems from the progression of myopia and its possible causes; ...
Burgos Fernandez, Francisco Javier (Date of defense: 2016-12-19)
Goniochromatic pigments, such as automotive coatings, are known by their appearance changes - especially of colour and visual texture - as a function of the angles of illumination and observation; they are classified as ...
Palomar Mascaró, Fernando-José (Date of defense: 2013-03-04)
Las hemianopsias homónimas se pueden definir como la pérdida absoluta o parcial de la visión en las mitades derechas o izquierdas de los campos visuales de ambos ojos. Los pacientes que sufren un defecto hemianópsico ...
Alterini, Tommaso (Date of defense: 2021-06-25)
Vision loss affects physical, psychological, and emotional wellbeing and social life as well. High life expectancy and health policies are translated into an aging population worldwide, which has higher risk of eye’s ...
Azcona Guerrero, Francisco Javier (Date of defense: 2018-07-20)
In this Thesis, we explore Self-mixing interferometry (SMI ), a method capable of producing high resolution optical path related measurements in a simple, compact and cost-effective way. Even with a notably less complex ...
Rey Barroso, Laura (Date of defense: 2023-12-18)
(English) This thesis makes a significant contribution to the realm of medical diagnostics through the utilization of photonic technologies and emerging imaging modalities, leading to the creation of innovative approaches ...
Clavé Cerezo, Laura (Date of defense: 2023-04-27)
(English) Diffractive multifocal intraocular lens typically uses a hybrid refractive-diffractive design that consist of a high-power refractive base lens and a low-power diffractive profile engraved on one of its surfaces. ...
Otero Molins, Carles (Date of defense: 2018-01-19)
A visual stimulus can be presented in free space or through lens-based systems. Interestingly, it has been reported many times in the past that some subjects have poorer accommodative responses when optically stimulated, ...
Aldaba Arevalo, Mikel (Date of defense: 2012-10-22)
Accommodation, defined as the dioptric change of the eye, enables clear vision at different distances. Its study is interesting due to different aspects: the progressive loss of amplitude of accommodation known as presbyopia, ...
Ifrah, Reut (Date of defense: 2023-06-26)
(English) Meibomian gland dysfunction (MGD) is a chronic and diffuse abnormality of the meibomian glands (MGs) that occurs in 38% of contact lens (CL) wearers, though the influence of CLs on MGD is equivocal. A topical ...
Oteo Lozano, Esther (Date of defense: 2013-09-27)
En aquesta tesis doctoral es presenta un nou mètode per al càlcul de desalineaments en sistemes òptics a partir del front d'ona a la sortida del sistema. El mètode parteix de l'ajust de polinomis de Zernike al front d'ona ...
García Guerra, Carlos Enrique (Date of defense: 2016-07-29)
Within the visual system, the optics of the eye is responsible for forming images of external objects on the ocular fundus for its photo-reception and neural interpretation. However, the eye is not perfect and its capabilities ...
Torrecilla Ribalta, Elena (Date of defense: 2012-07-27)
La gestió sostenible dels ecosistemes marins requereix d'un millor coneixement de la distribució de certs paràmetres ecològics com les comunitats de fitoplàncton, inclosos aquells grups algals causants d'afloraments. La ...
Santos Vives, Pau (Date of defense: 2018-07-13)
Spatial vision features play a key role in human vision quality, which in turn depends on the retinal image quality and posterior neural processing. The retinal image is affected by three optical phenomena: diffraction, ...
Martínez Roda, Joan A. (Joan Antoni) (Date of defense: 2017-04-27)
Image formation in the retina is the first stage in the visual process (optical stage), which is completed with photoreceptor stimulation and distribution of the generated signals (retinal stage), transmission to the visual ...
Torrents Gómez, Aurora (Date of defense: 2011-12-22)
Desde hace años se han realizado múltiples investigaciones que tratan sobre la fiabilidad de la percepción de las distancias en profundidad y la influencia del entorno. En ocasiones, las pistas presentes en el espacio ...
Giner Tort, Anna (Date of defense: 2018-10-08)
Vision is presented and universally accepted as the most precious of the human senses.lt is structured in three main parts: the optical system {eye), the photo-sensor {eye's retina), and the data processor (brain). If one ...
Lupón Bas, Núria (Date of defense: 2000-06-21)
En el marc del tractament de materials amb làser, el poliment de superfícies és una tècnica relativament recent i amb múltiples aplicacions. En aquesta tesi es tracta de l'aplicació d'aquesta tècnica sobre components de ...
Armengol Cebrian, Jesús (Date of defense: 2000-12-14)
El treball que es presenta en aquesta tesis incideix sobre aquest aspecte clau en les aplicacions amb feixos làser d'alta potència: com obtenir distribucions d'intensitat que permetin generar tractaments tèrmics uniformes. ...
Valencia Díaz, Edison (Date of defense: 2007-02-20)
Esta tesis cubre un conjunto de objetivos de investigación relacionados con la adquisición, la medida, la representación y el procesado de la información de color contenida en la imagen digital. La caracterización de los ...