Departament d'Òptica i Optometria
Enviaments recents
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Novel system for measuring the scattering of the cornea and the lens
(Universitat Politècnica de Catalunya, 2018-07-13)
Tesi
Accés obertSpatial 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, ... -
Estudi del parpelleig en usuaris/es de pantalles digitals : anàlisi d'estratègies pel condicionament del parpelleig i la distància de manera no intrusiva
(Universitat Politècnica de Catalunya, 2018-07-09)
Tesi
Accés obertIntoduction: There is an agreement in the scientific community, which indicates that excessive exposure to digital displays poses implications at a visual level, being ocular dryness and visual fatigue those of greater ... -
Implementation of differential self-mixing interferometry systems for the detection of nanometric vibrations
(Universitat Politècnica de Catalunya, 2018-07-20)
Tesi
Accés obertIn 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 ... -
Structural and functional macular inter-ocular asymmetry in patients with high myopia
(Universitat Politècnica de Catalunya, 2018-06-25)
Tesi
Accés obertBACKGROUND: 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 ... -
Device and strategy for surface energy measurement
(Universitat Politècnica de Catalunya, 2018-03-15)
Tesi
Accés obertIn 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 ... -
Development of a new spectral imaging system for the diagnosis of skin cancer
(Universitat Politècnica de Catalunya, 2017-11-06)
Tesi
Accés obertThe 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 ... -
Lens-based technologies to study accommodation and refraction
(Universitat Politècnica de Catalunya, 2018-01-19)
Tesi
Accés obertA 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, ... -
The design and implementation of a spectrally tuneable LED-based light sourde : towards a new era of intelligent illumination
(Universitat Politècnica de Catalunya, 2017-06-07)
Tesi
Accés obertRising 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 ... -
Estudi i desenvolupament d'un nou sistema d'inspecció de stents basat en tècniques de metrologia òptica
(Universitat Politècnica de Catalunya, 2017-04-22)
Tesi
Accés obertStent 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 ... -
Nuevas contribuciones para la medida objetiva de la difusión intraocular y su aplicación clínica
(Universitat Politècnica de Catalunya, 2017-04-27)
Tesi
Accés obertImage 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 ... -
Gonio-hyperspectral imaging system based on light-emitting diodes for the analysis of automotive coatings
(Universitat Politècnica de Catalunya, 2016-12-19)
Tesi
Accés obertGoniochromatic 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 ... -
Calidad visual en pacientes con implante bilateral y simétrico de lentes intraoculares multifocales
(Universitat Politècnica de Catalunya, 2016-12-15)
Tesi
Accés obertPURPOSE: 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 ...
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