Enviaments recents

  • Visual acuity and image quality in 5 diffractive intraocular lenses 

    Cardona Torradeflot, Genís; Vega Lerín, Fidel; Gil Arnal, Miguel Ángel; Varón Puentes, Maria Consuelo; Buil Calvo, José Antonio; Millán Garcia-Varela, M. Sagrario (2018-01-01)
    Article
    Accés obert
  • Connectivity-based segmentation of retinal vessels in eye fundus images 

    Rallo Capdevila, Miguel; Millán Garcia-Varela, M. Sagrario (2017-12)
    Article
    Accés obert
    © Sociedad Española de Óptica. A new unsupervised method for segmentation of objects of diverse nature with the common feature of connectivity (e.g. branching trees or net-shaped objects) is proposed. A preferred application ...
  • Dust particle artifact detection and removal in retinal images 

    Sierra, E.; Marrugo Hernandez, Andrés Guillermo; Millán Garcia-Varela, M. Sagrario (2017-12-01)
    Article
    Accés restringit per política de l'editorial
    Retinal fundus cameras suffer from dust particles attaching to the sensor and lens, which manifest as small artifacts on the images. We propose a new strategy for the detection and removal of dust particle artifacts in ...
  • Patient-Perceived and Laboratory-Measured Halos Associated with Diffractive Bifocal and Trifocal Intraocular Lenses 

    Alba Bueno, Francisco; Garzón Jimenez, Nuria; Vega Lerín, Fidel; Poyales, Francisco; Millán Garcia-Varela, M. Sagrario (2017-11-21)
    Article
    Accés restringit per política de l'editorial
    Purpose: To examine and assess the halos generated in distance vision by multifocal intraocular lenses (IOLs) using both in vitro objective and in vivo subjective methods. Setting: The objective method was carried out in ...
  • On lamps, walls, and eyes: the spectral radiance field and the evaluation of light pollution indoors 

    Bará Viñas, Salvador; Escofet Soteras, Jaume (2018-01-01)
    Article
    Accés restringit per política de l'editorial
    Light plays a key role in the regulation of different physiological processes, through several visual and non-visual retinal phototransduction channels whose basic features are being unveiled by recent research. The growing ...
  • Extended depth of focus intraocular lens: Chromatic performance 

    Millán Garcia-Varela, M. Sagrario; Vega Lerín, Fidel (2017-09-01)
    Article
    Accés obert
    We describe a first-and-second-diffractive-order intraocular lens ((1st,2nd)DIOL) within the class of hybrid refractive-diffractive designs for intraocular lenses (IOLs) and analyse its properties of focus extension and ...
  • Halos and multifocal intraocular lenses: origin and interpretation 

    Alba Bueno, Francisco; Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario (Elsevier, 2014-11-04)
    Article
    Accés obert
  • Spectral radiance of blue light filters on ophthalmic lenses 

    Fernández Valls, Cristina; Argilés Sans, Marc; Pérez Cabré, Elisabet; Cardona Torradeflot, Genís (2017-05-29)
    Article
    Accés obert
    As a result of the recent improvement in light-emitting diode (LED) technology, the displays of the vast majority of electronic devices are now illuminated by LEDs. There are several advantages of this type of light source ...
  • Changes in peripheral refraction, higher-order aberrations, and accommodative lag with a radial refractive gradient contact lens in young myopes 

    Pauné Fabre, Jaime; Thivent, Solène; Armengol Cebrian, Jesús; Quevedo Junyent, Luisa Jesús; Faira Ribeiro, Miguel; González-Méijome, José Manuel (Lippincott Williams & Wilkins, 2016-01-22)
    Article
    Accés obert
    Purpose: To evaluate changes in the peripheral refraction (PR), visual quality, and accommodative lag with a novel soft radial refractive gradient (SRRG) experimental contact lens that produces peripheral myopic ...
  • Nanoporous silicon-based surface patterns fabricated by UV laser interference techniques for biological applications 

    Recio Sánchez, Gonzalo; Pelaez de Fuentes, Ramon Javier; Vega Lerín, Fidel; Martín Palma, Raúl José (2016-05-04)
    Article
    Accés obert
    The fabrication of selectively functionalized micropatterns based on nanostructured porous silicon (nanoPS) by phase mask ultraviolet laser interference is presented here. This single-step process constitutes a flexible ...
  • Roadmap on optical security 

    Javidi, Bahram; Pérez Cabré, Elisabet; Millán Garcia-Varela, M. Sagrario (Institute of Physics (IOP), 2016)
    Article
    Accés obert
  • Ground-based hyperspectral analysis of the urban nightscape 

    Alamús, Ramón; Bará Viñas, Salvador; Corbera, Jordi; Escofet Soteras, Jaume; Palà, Vicenç; Pipia, Luca; Tardà, Anna (2017-02-28)
    Article
    Accés obert
    Airborne hyperspectral cameras provide the basic information to estimate the energy wasted skywards by outdoor lighting systems, as well as to locate and identify their sources. However, a complete characterization of the ...

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