Now showing items 13-24 of 180

    • Beam-shaping extended depth of focus intraocular lens: optical assessment with corneas of increasing spherical aberration 

      Madrid Costa, David; Fernández-Vega Cueto, Luis; Azor Morón, Juan Antonio; Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario; Alfonso, José F. (2023-02)
      Article
      Open Access
      PURPOSE:To assess the optical quality and halo formation of a beam-shaping extended depth-of-focus (EDOF) intraocular lens (IOL) (AcrySof IQ Vivity; Alcon Laboratories, Inc) with corneas of long-range spherical aberration ...
    • Retinal vessel local tortuosity under a macula-to-optic disc central-framing change 

      Ramírez Cano, Natalia; Rallo Capdevila, Miguel; Millán Garcia-Varela, M. Sagrario (2023-03-01)
      Article
      Open Access
      Some ocular and cardiovascular diseases can be detected through the increased tortuosity of retinal blood vessels. Objective tortuosity measures can be obtained from digital image analysis of a retinography. This study ...
    • Pitfalls of using NIR-based clinical instruments to test eyes implanted with diffractive intraocular lenses 

      Vega Lerín, Fidel; Faria-Ribeiro, Miguel; Armengol Cebrian, Jesús; Millán Garcia-Varela, M. Sagrario (2023-04-01)
      Article
      Open Access
      The strong wavelength dependency of diffractive elements casts reasonable doubts on the reliability of near-infrared- (NIR)-based clinical instruments, such as aberrometers and double-pass systems, for assessing, post-surgery, ...
    • Optical and clinical outcomes of an enhanced monofocal intraocular lens for high hyperopia 

      Fernández-Vega Cueto, Luis; Vega Lerín, Fidel; Guerra Velasco, Raquel; Millán Garcia-Varela, M. Sagrario; Madrid Costa, David; Alfonso, José F. (2022-09)
      Article
      Open Access
      Purpose: To evaluate the optical and clinical performance of an enhanced monofocal intraocular lens (IOL) (TECNIS Eyhance ICB00; Johnson & Johnson Vision) in patients with high hyperopia and a short axial length. Methods: ...
    • Nonlinear encryption for multiple images based on a joint transform correlator and the Gyrator transform 

      Pérez, Ronal A; Vilardy Ortiz, Juan Manuel; Pérez Cabré, Elisabet; Millán Garcia-Varela, M. Sagrario; Torres Moreno, Cesar Orlando (Multidisciplinary Digital Publishing Institute (MDPI), 2023-02-01)
      Article
      Open Access
      A novel nonlinear encryption–decryption system based on a joint transform correlator (JTC) and the Gyrator transform (GT) for the simultaneous encryption and decryption of multiple images in grayscale is proposed. This ...
    • Double image encryption system using a nonlinear joint transform correlator in the Fourier domain 

      Pérez, Ronal A; Pérez Cabré, Elisabet; Vilardy Ortiz, Juan Manuel; Millán Garcia-Varela, M. Sagrario; Torres Moreno, Cesar Orlando (Multidisciplinary Digital Publishing Institute (MDPI), 2023-02-02)
      Article
      Open Access
      In this work, we present a new nonlinear joint transform correlator (JTC) architecture in the Fourier domain (FD) for the encryption and decryption of two simultaneous images. The main features of the proposed system are ...
    • El sueño como factor de riesgo en el avance de la miopía 

      Fambuena Muedra, Isabel; Díez Ajenjo, Mª Amparo; Ordiñaga Monreal, Enrique; Peris Martínez, Cristina; Puertas Cuestas, Francisco Javier (2022)
      Part of book or chapter of book
      Open Access
    • Halo in extended depth of focus and bifocal intraocular lenses 

      Vega Lerín, Fidel; Azor Morón, Juan Antonio; Millán Garcia-Varela, M. Sagrario (2022-07)
      Article
      Restricted access - publisher's policy
      Purpose: To evaluate the size and intensity of the halos generated in distance vision by bifocal and extended depth of focus (EDOF) intraocular lenses (IOLs) as a function of pupil size, lens base power and lens addition. ...
    • Short- and mid-term changes in CORVIS ST parameters in successful, adult orthokeratology patients 

      Pérez Corral, Juan Enrique; Cardona Torradeflot, Genís; Piñero Llorens, David Pablo; Barroso Pérez, David Cesar; Armadans Sorní, Laura (2022-11-14)
      Article
      Open Access
      Clinical relevance: The analysis of the changes in various biomechanical and tomographic characteristics of the cornea associated with orthokeratology may allow to identify potential mid- and long-term structural alterations, ...
    • Optical and clinical outcomes of an extended range of vision intraocular lens 

      Fernández-Vega Cueto, Luis; Madrid Costa, David; Alfonso Bartolozzi, Belén; Vega Lerín, Fidel; Millán Garcia-Varela, M. Sagrario; Alfonso, José F. (2022-03)
      Article
      Open Access
      Purpose: To assess the in vitro optical quality and halo formation of the AcrySof IQ Vivity intraocular lens (IOL) (Alcon Laboratories, Inc) and to evaluate the clinical outcomes in patients who had bilateral implantation ...
    • Game-based Learning in Computer Engineering: A Workshop 

      Farreras Esclusa, Montserrat; Armengol Cebrian, Jesús; Bofill, Pau; Hernandez, Angels (European Society for Engineering Education (SEFI), 2022)
      Conference report
      Open Access
      Gamification has gained popularity in the last years, it is used in primary and secondary schools, as well as in companies and universities (Call, 2021). Along with this growth in popularity the number of available computer ...
    • Are patients sufficiently informed about contact lens wear and care? 

      Alonso Matarín, Silvia; Yela Paradas, Sandra; Cardona Torradeflot, Genís (Wolters Kluwer, 2022-12)
      Article
      Open Access
      Significance: Frequent and effective patient-practitioner communication is essential to ensure instructions regarding contact lens use, care and maintenance are understood and followed. Given the relevance of good patient ...