Departament d'Òptica i Optometria: Recent submissions
Now showing items 6-25 of 58
Diseño e implementación de un laboratorio destinado a la validación clinica de ayudas para la percepción y movilidad en pacientes con limitación de campo periférico
People with peripheral visual field loss perceive limited information about the environment and present severe problems in achieving successful orientation and mobility. In recent years, virtual and augmented reality systems ...
Caracterización de la regresión diurna en ortoqueratología
The first papers on the fitting of ortho-k lenses in ametropic individuals, treatment that allows them to enjoy good vision without the need to wear glasses or contact lenses, were published almost 60 years ago. Both the ...
Spectral control methods and applications for multi-channel LED light engines
Lighting installations are usually static and based on long-standing visual indicators such as colour temperature, colour rendering, and illuminance values. However, we now know that spectral variations in light elicit ...
Hyperspectral imaging system for the fast recording of the ocular fundus
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 ...
Validación de un instrumento de calidad de vida específico para pacientes con discapacidad visual : Low Vision Quality of Life (LVQOL)
There is a growing need in the western world to know the quality of life (QoL) of patients affected by ocular pathologies that cause visual impairment (VI). In this type of pathologies, objective data such as visual acuity ...
Caracterització dels paràmetres corneals per a l'adaptació de lents de contacte en casos de queratocon
Introduction: The characterization of the corneal surface and the classification of keratoconus into diverse severity stages is a field of research in constant evolution, not only because of technology advances, but also ...
Development of new methodologies for the clinical, objective and automated evaluation of visual function based on the analysis of ocular movements : application in visual health
Healthy visual function not only relies on good visual acuity. Other systems such as accommodation or binocular vision need to be effective. Binocular vision is the ability of the visual system to coordinate and integrate ...
Quality check of optical elements manufactured with in-mould hybrid integration technique
In the present industrial thesis has been developed and implemented with success a measurement strategy that consists of an optical test of validation of the optical functionality of photonic components in the same ...
Design of a portable observatory control system
In this thesis, we synthesize the development of a new concept of operation of small robotic telescopes operated over the Internet. Our design includes a set of improvements in control algorithmic and hardware of several ...
Optical and visual characterization of multifocal contact lenses and multifocal intraocular lenses
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 ...
Novel system for measuring the scattering of the cornea and the lens
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, ...
Estudi del parpelleig en usuaris/es de pantalles digitals : anàlisi d'estratègies pel condicionament del parpelleig i la distància de manera no intrusiva
Intoduction: 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
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 ...
Structural and functional macular inter-ocular asymmetry in patients with high myopia
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 ...
Device and strategy for surface energy measurement
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 ...
Development of a new spectral imaging system for the diagnosis of skin cancer
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 ...
Lens-based technologies to study accommodation and refraction
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, ...
The design and implementation of a spectrally tuneable LED-based light sourde : towards a new era of intelligent illumination
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 ...
Estudi i desenvolupament d'un nou sistema d'inspecció de stents basat en tècniques de metrologia òptica
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 ...
Nuevas contribuciones para la medida objetiva de la difusión intraocular y su aplicación clínica
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 ...
