Browsing by Author "Vega Lerín, Fidel"
Now showing items 1-20 of 45
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Astigmatism-induced image degradation in a model eye with a monofocal intraocular lens
(2024-03-31)
Article
Open AccessThe influence of astigmatism on the image formed by a model eye with an intraocular lens (IOL) inserted is analysed. Toric (T-) and non-toric (N-) versions of the same monofocal spherical aberration-free IOL (20 D) were ... -
Beam-shaping extended depth of focus intraocular lens: optical assessment with corneas of increasing spherical aberration
(2023-02)
Article
Open AccessPURPOSE: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 ... -
Clinical assessment of chromatic aberration in phakic and pseudophakic eyes
(Red Iberoamericana de Óptica (RIAO), 2019)
Conference report
Restricted access - publisher's policyWe present a psychophysical method and a simple setup for the clinical assessment of the longitudinal chromatic aberration (LCA) in phakic and pseudophakic eyes. A proof of concept built from inexpensive and non-sophisticated ... -
Clinical assessment of chromatic aberration in phakic and pseudophakic eyes using a simple autorefractor
(2019-08-01)
Article
Open AccessWe describe a psychophysical method and a simple setup – an autorefractor with a Scheiner disc, sequentially illuminated with red and blue lights – for the clinical assessment of the longitudinal chromatic aberration (LCA) ... -
Comparison of far and near contrast sensitivity in patients symmetrically implanted with multifocal and monofocal IOLs
(2013-11-20)
Article
Restricted access - publisher's policy -
Comparison of visual and optical quality of monofocal versus multifocal intraocular lenses
(2019-02-10)
Article
Open Access -
Comparison of visual performance between two aspheric monofocal intraocular lens models
(Taylor & Francis, 2021-12-07)
Article
Open AccessClinical relevance It is important to distinguish between visual acuity, optical quality and quality of vision when outcomes obtained with intraocular lenses are evaluated. These parameters, that includeobjective and ... -
Correlation between polychromatic image quality metrics to predict visual acuity in pseudophakic patients
(EPJ Web of Conferences, 2020)
Conference lecture
Open AccessThe optical quality of three multifocal intraocular lenses (MIOLs) was measured in vitro using the area under the modulation transfer function (MTFa) and energy efficiency (EE). We evaluated those metrics through-focus ... -
Diseño y caracterización de un dispositivo óptico para la evaluación de lentes intraoculares in vitro
(Comité de Optoelectrónica, 2021)
Conference lecture
Restricted access - publisher's policySe ha realizado el diseño y la caracterización de un dispositivo en banco óptico, que incorpora un nuevo modelo de ojo fisiológico y un sistema de óptica adaptativa controlado por ordenador, para la evaluación in vitro de ... -
Dynamics of fast pattern formation in porous silicon by laser interference
(2014-10-24)
Article
Open AccessPatterns are fabricated on 290 nm thick nanostructured porous silicon layers by phase-mask laser interference using single pulses of an excimer laser (193 nm, 20 ns pulse duration). The dynamics of pattern formation is ... -
Energy balance in apodized diffractive multifocal intraocular lenses
(2011)
Article
Open Access -
Energy Distribution between Distance and Near Images in Apodized Diffractive Multifocal Intraocular Lenses
(2011-07)
Article
Open Access -
Energy efficiency of a new trifocal intraocular lens
(2014-01-15)
Article
Open AccessThe light distribution among the far, intermediate and near foci of a new trifocal intraocular lens (IOL) is experimentally determined, as a function of the pupil size, from image analysis. The concept of focus energy ... -
Equivalence of two optical quality metrics to predict the visual acuity of multifocal pseudophakic patients
(2020-05-01)
Article
Open AccessThis article studies the relationship between two metrics, the area under the modulation transfer function (MTFa) and the energy efficiency (EE), and their ability to predict the visual quality of patients implanted with ... -
Experiment design for through-focus testing of intraocular lenses
(2013)
Conference report
Restricted access - publisher's policy -
Extended depth of focus intraocular lens: Chromatic performance
(2017-09-01)
Article
Open AccessWe 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 ... -
Halo and Through-Focus Performance of Four Diffractive Multifocal Intraocular Lenses
(2015-05-05)
Article
Open AccessPURPOSE. To compare, as a function of pupil size, the through-focus performance and halo features of four diffractive intraocular lenses (IOLs). METHODS. Three diffractive bifocal IOLs (ReSTOR þ2.5 D SV25T0, Tecnis þ2.75 ... -
Halo in extended depth of focus and bifocal intraocular lenses
(2022-07)
Article
Restricted access - publisher's policyPurpose: 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. ... -
Halos and multifocal intraocular lenses: origin and interpretation
(Elsevier, 2014-11-04)
Article
Open Access -
Impact of lens material on objective refraction in eyes with trifocal diffractive intraocular lenses
(2021-01-01)
Article
Open AccessPurpose: Compare subjective (Rx) and objective (ObjRx) refractions outcomes with two autorefractors models and an aberrometer in eyes implanted with a hydrophobic trifocal IOL (FineVision POD F GF, Physiol, Liége, Belgium) ...
