Výsledky vyhledávání - "Guillermo M Pérez"

Akademický článek

An objective scatter index based on double-pass retinal images of a point source to classify cataracts.

Autor: Pablo Artal, Antonio Benito, Guillermo M Pérez, Encarna Alcón, Alvaro De Casas, Jaume Pujol, José M Marín

Publikováno v: PLoS ONE, Vol 6, Iss 2, p e16823 (2011)

PURPOSE: To propose a new objective scatter index (OSI) based in the analysis of double-pass images of a point source to rank and classify cataract patients. This classification scheme is compared with a current subjective system. METHODS: We selecte

Externí odkaz: https://doaj.org/article/8a9e32906e8d4679b77dd1d371cfdc03

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Relationship between Induced Spherical Aberration and Depth of Focus after Hyperopic LASIK in Presbyopic Patients

Autor: François Malecaze, Jonathan Letsch, Guillermo M. Pérez, Pablo Artal, Claire Triozon, Benjamin Leray, Vincent Soler, Eric Chapotot, Myriam Cassagne, Eloy A. Villegas

Publikováno v: Ophthalmology. 122:233-243

To evaluate to what extent the modification of corneal asphericity to induce spherical aberration (SA) can improve the depth of focus and to determine whether preoperative adaptive optics assessment (Voptica SL) can predict an optimal SA value for ea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a62d6cf393373ceef93562bee8265dfc
https://doi.org/10.1016/j.ophtha.2014.08.021

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Tear-film dynamics by combining double-pass images, pupil retro-illumination, and contrast sensitivity

Autor: Guillermo M. Pérez, Juan M. Bueno, Pablo Artal, Antonio Benito

Publikováno v: Journal of the Optical Society of America A. 36:B138

Tear-film dynamics were analyzed by a synchronizing recording of double-pass (DP) and pupil retro-illumination (RI) images with contrast sensitivity (CS) measurements. Simultaneous DP and RI images were acquired in three subjects wearing contact lens

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f726d21eda30a12f17fa697a50528357
https://doi.org/10.1364/josaa.36.00b138

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New Thermosets Obtained by Thermal and UV-Induced Cationic Copolymerization of DGEBA with 4-Phenyl-γ-butyrolactone

Autor: Xavier Fernández-Francos, Guillermo M. Pérez, Ana Mantecón, Josep Maria Salla, Xavier Ramis, Angels Serra

Publikováno v: Macromolecular Chemistry and Physics. 210:1450-1460

Mixtures of DGEBA with 4-phenyl-γ-butyrolactone (PhBL) were cationically copolymerized in the presence of ytterbium triflate or triarylsulfonium hexafluoroantimoniate as thermal or photo initiator respectively. Changes during curing and final proper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8953715baffc5e732dcc6c41003a7dee
https://doi.org/10.1002/macp.200900118

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The Optical Integration technique for the measurement of light scatter in the human eye

Autor: Pablo Artal, Harilaos Ginis, Juan M. Bueno, Guillermo M. Pérez

Publikováno v: Acta Ophthalmologica. 89

Purpose To develop and demonstrate a new optical technique for the measurement of light scatter in the human eye based on extended source imaging in a double pass configuration. Methods The experimental setup is based on a double-pass (DP) configurat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a696f9df7f0675238b949b5b8a16787
https://doi.org/10.1111/j.1755-3768.2011.4326.x

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Assessing the wavelength dependence of intraocular scattering by a new optical approach

Autor: Pablo Artal, Guillermo M. Pérez, Harilaos Ginis, Juan M. Bueno

Publikováno v: Acta Ophthalmologica. 89

Purpose The wavelength dependence of the light scattering is related with the characteristics of the inhomogeneities in the ocular media, and therefore, an objective assessment could be used to the early detection of underlying ocular pathologies. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b96b37033895088eb9006d5ccd9b4a7
https://doi.org/10.1111/j.1755-3768.2011.4325.x

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Objective optical assessment of tear-film quality dynamics in normal and mildly symptomatic dry eyes

Autor: Sandra Mirabet, Guillermo M. Pérez, Meritxell Vilaseca, Pablo Artal, José María Marín, Jaume Pujol, Antonio Benito

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
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PURPOSE: To evaluate and compare the tear-film dynamics in normal eyes and in eyes with mild dry-eye symptoms using a new noninvasive optical method based on a double-pass instrument. SETTING: Hospital Universitario Virgen de la Arrixaca, Murcia, Spa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22fe8b812fecd9afc7d20428b1b22f32
http://hdl.handle.net/2117/13727

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An objective scatter index based on double-pass retinal images of a point source to classify cataracts

Autor: Jose M. Marin, Jaume Pujol, Alvaro De Casas, Pablo Artal, Encarna Alcón, Guillermo M. Pérez, Antonio Benito

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
PLoS ONE
PLoS ONE, Vol 6, Iss 2, p e16823 (2011)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de63e0d8806334b8e93300dd60ea8098

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Cause of monocular diplopia diagnosed by combining double-pass retinal image assessment and Hartmann-Shack aberrometry

Autor: S. Abenza, Jose M. Marin, Alvaro De Casas, Guillermo M. Pérez, Pablo Artal

Publikováno v: Journal of refractive surgery (Thorofare, N.J. : 1995). 26(4)

PURPOSE: To report an advanced optical procedure developed for the diagnosis of a particular case of diplopia. METHODS: This approach combined the quantification of the level of intraocular scattering by using an Objective Scatter Index provided by a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9904058a0fe24ccb03324417d156d92e
https://pubmed.ncbi.nlm.nih.gov/20415326

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A Polychromatic High Sensitivity Double-Pass System to Measure Intraocular Scattering

Autor: Guillermo M. Pérez, Pablo Artal

Publikováno v: Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion.

We developed an instrument based on the double-pass technique to quantify intraocular scattering in the living eye by recording and analyzing retinal images with a large fied of view.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1906c2cafcae5c9ca1863757f3980e2c
https://doi.org/10.1364/fio.2007.fthe2

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