Exploració per tema "Cornea"

Ara es mostren els items 41-49 de 49

    • Sources of variability of the van Herick technique for anterior angle estimation 

      Gispets Parcerisas, Joan; Cardona Torradeflot, Genís; Verdú, Miriam; Tomás Corominas, Núria (2014-03-01)
      Article
      Accés obert
      BackgroundThe purpose of the present study was to investigate two potential sources of variability of the traditional van Herick technique for temporal anterior chamber angle estimation, namely the need to compare the depth ...

    • Study of air flow and temperature on corneal surface using a model eye 

      Simó Bertran, Elisabet (Universitat Politècnica de Catalunya, 2020-01-22)
      Projecte Final de Màster Oficial
      Accés obert
      L’estesiòmetre d’aire és un instrument no invasiu que s’està desenvolupant per a millorar la tècnica de mesura de la sensibilitat corneal. L’objectiu d’aquesta investigació, la qual forma part d’un projecte més gran en el ...

    • System based on the contrast of Purkinje images to measure corneal and lens scattering 

      Santos Vives, Pau; Martínez Roda, Juan Antonio; Ondategui Parra, Juan Carlos; Díaz Douton, Fernando; Cazal, Jorge; Vilaseca Ricart, Meritxell (2018-09)
      Article
      Accés obert
      Current methods to measure intraocular scattering provide information on the total scattered light, which consists of the combined contributions originating from different ocular structures. In this work, we propose a ...

    • Tear film stability assessment by corneal reflex image degradation 

      Aldaba Arévalo, Mikel; Mira Agudelo, Alejandro; Barrera, John Fredy; García Guerra, Carlos Enrique; Pujol Ramo, Jaume (2019-04-01)
      Article
      Accés obert

    • Tear film stability assessment by corneal reflex image degradation 

      Aldaba Arévalo, Mikel; Mira Agudelo, Alejandro; Barrera, John Fredy; García Guerra, Carlos Enrique; Pujol Ramo, Jaume (2018)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A method for tear film break up measurements based on the degradation of corneal reflex images caused by dry spots is presented. The experimental setup, which is based on recording the corneal reflex image or the first ...

    • Threshold to predict astigmatism reduction after pterygium excision 

      Pujol Vives, Pere; Julio Morán, Gemma; de Carvalho Mendes Castanheira, Amélia Maria; Kostov, Belchin Adriyanov; Pujol Vives, Pere (2014-07-01)
      Article
      Accés restringit per política de l'editorial
      Purpose. To compare corneal astigmatism after pterygium excision, using limbal-conjunctival autograft (LCA) with and without mitomycin C (MMC) and to establish a threshold for postoperative astigmatism reduction.; Methods. ...

    • Toric double tear reservoir contact lens in orthokeratology for astigmatism 

      Pauné Fabré, Jaime; Cardona Torradeflot, Genís; Quevedo Junyent, Luisa Jesús (Lippincott Williams & Wilkins, 2012)
      Article
      Accés restringit per política de l'editorial

    • Variación del astigmatismo corneal inducido por cirugía de catarata en función de la incisión límbica 

      Castillejo Santos, Ana (Universitat Politècnica de Catalunya, 2015-06-18)
      Projecte Final de Màster Oficial
      Accés obert
      Propósito: Hoy en día el objetivo de la cirugía de cataratas no es solo extraer el cristalino opacificado, sino también emetropizar al paciente, reduciendo su refracción en lo posible, mediante la implantación de lentes ...

    • Wavefront-modified vector beams for THz cornea spectroscopy 

      Lamberg, Joel; Zarrinkhat, Faezeh; Tamminen, Aleksi; Baggio, Mariangela; Ala-Laurinaho, Juha; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Khaled, Elsayed E. M.; Taylor, Zachary (Optical Society of American (OSA), 2023-11-20)
      Article
      Accés obert
      Terahertz spectroscopy is a promising method to diagnose ocular diseases, where the cornea is typically imaged by Gaussian beams. However, the beam’s mismatch with the cornea’s spherical surface produces a 5-10 % error in ...