Results 11 to 20 of about 1,168 (112)

Bifocal diffractive lenses based on the aperiodic Kolakoski sequence [PDF]

Scientific Reports
In this work, we present a new family of Zone Plates (ZPs) designed using the self-generating Kolakoski sequence. The focusing and imaging properties of these aperiodic diffractive lenses coined Kolakoski Zone Plates (KZPs) are extensively studied. It is
Adrián Garmendía-Martínez, Francisco M. Muñoz-Pérez, Walter D. Furlan, Vicente Ferrando, Juan A. Monsoriu   +4 more
doaj   +2 more sources

Simulation of daily soft multifocal contact lenses using SimVis Gekko: from in-vitro and computational characterization to clinical validation [PDF]

Scientific Reports
Multifocal contact lenses (MCLs) are one of the solutions to correct presbyopia, but their adoption is not widespread. To address this situation, visual simulators can be used to refine the adaptation process.
Eduardo Esteban-Ibañez, Diego Montagud-Martínez, Lucie Sawides, Amal Zaytouny, Alberto de Castro, Irene Sisó-Fuertes, Xoana Barcala, David P. Piñero, Walter D. Furlan, Carlos Dorronsoro, Enrique Gambra   +10 more
doaj   +2 more sources

Serie de Casos Clínicos: Contactología en Córnea Irregular y para el Control de Miopía

Optometría Clínica y Ciencias de la Visión, 2022
Relevancia: Podemos encontrarnos con casos en los que sea necesario un conocimiento superior en contactología. No es lo habitual, pero no por ello debemos olvidar o dejar de aprender en esta rama de la óptica. Las lentes de contacto rígidas van a ayudar
Jorge Andrés-Navarro, Enrique Josua Fernández, Eloy Ángel Villegas Ruiz   +2 more
doaj   +1 more source

Uso del test del susurro para el cribado de pérdida auditiva en mayores institucionalizados con deterioro cognitivo

European Journal of Health Research, 2021
Estudios recientes establecen asociación entre déficit auditivo y función cognitiva, existiendo evidencias de que la pérdida de audición puede agravar el deterioro de calidad de vida derivado de afectación cognitiva.
Covadonga Vázquez-Sánchez, Luz Mª Gigirey   +1 more
doaj   +1 more source

Retinal Protection from LED-Backlit Screen Lights by Short Wavelength Absorption Filters

Cells, 2021
(1) Background: Ocular exposure to intense light or long-time exposure to low-intensity short-wavelength lights may cause eye injury. Excessive levels of blue light induce photochemical damage to the retinal pigment and degeneration of photoreceptors of ...
Celia Sanchez-Ramos, Cristina Bonnin-Arias, Vanesa Blázquez-Sánchez, Victoria Aguirre-Vilacoro, Teresa Cobo, Olivia García-Suarez, María Jesús Perez-Carrasco, Cristina Alvarez-Peregrina, José A. Vega   +8 more
doaj   +1 more source

Fluholoscopy—Compact and Simple Platform Combining Fluorescence and Holographic Microscopy

Biosensors, 2023
The combination of different imaging modalities into single imaging platforms has a strong potential in biomedical sciences as it permits the analysis of complementary properties of the target sample.
David Alonso, Javier Garcia, Vicente Micó   +2 more
doaj   +1 more source

Ojo seco y cirugía refractiva, estudio de red de citación

Revista Mexicana de Oftalmología, 2021
Objetivo: Identificar las conexiones entre los investigadores más citados y el impacto de autores, revistas y contenidos en el campo de ojo seco tras cirugía refractiva, para focalizar la futura investigación en ello.
Elena Fraga-Graells, Cristina Álvarez-Peregrina, César Villa-Collar, Miguel Ángel Sánchez-Tena   +3 more
doaj   +1 more source

Desempeño Profesional en Cuba del Licenciado en Optometría y Óptica en el Manejo del Glaucoma

Optometría Clínica y Ciencias de la Visión, 2023
Relevancia: La importancia del mejoramiento del desempeño profesional en Cuba del licenciado en Optometría y Óptica en la atención del paciente con Glaucoma.
Inalvis Suárez Cuza, Aniuska Pérez Fernández, Ilena Laine Lominchar Agüero, Idalmis Martínez Palmer, Adisleidys Cuba Poll, Letisia Muñoz Alonso, Taimy León Vázquez   +6 more
doaj   +1 more source

Subjective refraction using power vectors by updating a conventional phoropter with a Stokes lens for continuous astigmatic power generation

Ophthalmic and Physiological Optics, Volume 43, Issue 5, Page 1029-1039, September 2023., 2023
Abstract Purpose To implement a pure power vector method for monocular subjective refraction using a regular phoropter with the only modification being the inclusion of a Stokes lens. The proposed methodology was tested with three different Stokes lenses, and the results were compared with conventional clinical refraction procedures.
Jose Ricardo Albero Moreno, Vicente Micó, Cesar Albarrán Diego   +2 more
wiley   +1 more source

Theoretical performance of progressive addition lenses with poorly measured individual parameters

Ophthalmic and Physiological Optics, Volume 43, Issue 2, Page 244-253, March 2023., 2023
Abstract Purpose The aim of this paper was to present a theoretical study of how poorly measured individual parameters affect the optical performance of progressive addition lenses (PALs). Modern progressive lenses can be prescribed based on parameters such as vertex distance, pantoscopic and wrap angles.
Eduardo Pascual, José A. Gómez‐Pedrero, José Alonso   +2 more
wiley   +1 more source