Now showing items 21-40 of 60
Alzaben, Zeyad A. (Date of defense: 2018-06-25)
BACKGROUND: Retinal evaluation performed in the optometry clinic allows optometrists to track the prognosis of retinal disease and to assess anatomical and functional changes related to age and pathological and non-pathological ...
Domínguez Álvarez, Noemí (Date of defense: 2018-03-15)
In this Ph.D. Thesis, we have developed a new measurement method to measure the contact angle and the surface energy in hydrophobic samples with a device based on confocal technology. This new measurement method incorporates ...
Delpueyo Español, Xana (Date of defense: 2017-11-06)
The incidence of skin cancer in Europe, US and Australia has been rising rapidly. Skin cancer accounts for one in three cancers worldwide and a person has 1:25 chance to develop a melanoma, the most aggressive form. Visual ...
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, ...
Hertog, Wim (Date of defense: 2017-06-07)
Rising population numbers place ever increasing demands on energy resources. A large percentage of the worldwide energy production is reserved for the generation of electricity and a significant portion of the electrical ...
Bermúdez Porras, Carlos (Date of defense: 2017-04-22)
Stent quality control is a critical process. Coronary stents have to be inspected 100% so no defective stent is implanted into a human body. We have developed an optical non-contact measurement instrument that provides ...
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 ...
Varón, Ma. Consuelo (María Consuelo) (Date of defense: 2016-12-15)
PURPOSE: This thesis presents the results of a prospective, double-blind and randomized clinical trial conducted at the Hospital de Sant Pau i la Santa Creu ofBarcelona.lts main objective was to assess and compare visual ...
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 ...
Jha, Ajit (Date of defense: 2016-11-25)
Diese Arbeit soll einen Beitrag leisten zur Entwicklung neuer Sensorstrategien, basierend auf Phänomenen der optischer Rückkopplung, in Kombination mit die Intensitätsmodulation des Lasers. Optische Rückkopplung, ein ...
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 ...
Ondategui Parra, Juan Carlos (Date of defense: 2016-01-29)
This dissertation deals with the evaluation of ocular optical quality in two types of patients. First, are patients who have undergone different surgical techniques of refractive surgery to correct different degrees of ...
Sanabria, Ferran (Date of defense: 2015-12-02)
The purpose of this PhD thesis was to design, implement and validate a low cost compact system based on the double-pass I technique in order to evaluate the viability of its use in the future in optical instrumentation ...
Tomàs Corominas, Núria (Date of defense: 2015-11-11)
This work can be framed in the field of computer-aided optical systems design and it is a part of a larger project in which automated processes are studied and implemented aiming to reduce the time span that stands between ...
Pauné i Fabré, Jaume (Date of defense: 2015-11-18)
Myopia is the main cause of vision loss worlwide, with associated ocular pathology risks related to myopia amount. Therefore, interventions directed towards limiting or preventing the progression of myopia are of high ...
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; ...
Arana S., Fernando F. (Date of defense: 2014-11-17)
In this study a new methodology of evaluation and design of light spectral composition for use in museums is presented. The hypothesis under this doctoral thesis is explained in three parts: a) it is factible to obtain a ...
Alba Bueno, Francisco (Date of defense: 2014-06-27)
The optical characterization of an intraocular lens (IOL) provides objective and quantitative information that is essential to fully understand its performance as an implant that replaces the crystalline lens in the human ...
Herrera Ramírez, Jorge A. (Date of defense: 2014-03-25)
Multispectral systems have several applications and there are different possible configurations in which they can be implemented. Different characteristics make them useful, but the basic one is the access to spectral ...
Marrugo Hernández, Andrés G. (Andrés Guillermo) (Date of defense: 2013-11-29)
Medical digital imaging has become a key element of modern health care procedures. It provides a visual documentation, a permanent record for the patients, and most importantly the ability to extract information about many ...