Scattering contribution to the double-pass PSF using Monte Carlo simulations

Autors: Dimitrios Christaras, Harilaos Ginis, Alexandros Pennos and Pablo Artal
Journal: Ophthalmic and Physiological Optics
Volume: 37 (Issue 3)
Pages: 342–346
Year: 2017
ISBN: 0275-5408

 
Abstract

Purpose

Scattering in the eye occurs mainly at two sites: the eye’s optical media and the deeper retinal layers. Although the two phenomena are often treated collectively, their spatial domain of contribution to the double-pass Point […]

By |May 25th, 2018|Categories: 2017, Publications||0 Comments

Chromatic aberration control with liquid crystal spatial phase modulators

Autors: Jose L. Martinez, Enrique J. Fernandez, Pedro M. Prieto, And Pablo Artal
Journal: Optics Express
Volume: 25, Issue 9
Pages: 9793-9801
Year: 2017
ISBN: 1094-4087

 
Abstract:
The chromatic behavior of diffractive optical elements, exhibiting 2π-wrapped phase profiles, implemented into liquid crystal spatial light modulators (LC-SLM) is described. A wrapped phase map is only equivalent to the original continuous profile for […]

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Micrometric Control of the Optics of the Human Eye: Environment or Genes?

Autors: Juan Tabernero, Lucía Hervella, Antonio Benito, Lucía Colodro-Conde, Juan R. Ordoñana, Marcos Ruiz-Sanchez, José María Marín, and Pablo Artal
Journal: IOVS
Volume: 58 (4)
Pages: 1964–1970
Year: 2017
ISBN: 0146-0404

 

PURPOSE. he human eye has typically more optical aberrations than conventional artificial optical systems. While the lower order modes (defocus and astigmatism) are well studied, our purpose is to […]

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Achromatic doublet intraocular lens for full aberration correction

Autors:Enrique J. Fernandez, Pablo Artal
Journal: Biomedical Optics Express
Volume: 8 (Issue 5)
Pages: 2396-2404
Year: 2017
ISBN: 2156-7085

 

 
Abstract:
A doublet intraocular lens optimized for both chromatic and monochromatic aberration correction in pseudophakic eyes is presented. Ray-tracing techniques were applied to design the lens in white light within a chromatic eye model. Combinations of two materials, already commonly used in […]

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Performance of a differential contrast sensitivity method to measure intraocular scattering

Autors: Alexandros Pennos, Harilaos Ginis, Augusto Arias,Dimitrios Christaras, and Pablo Artal
Journal: Biomedical Optics Express
Volume: 8, Issue 3
Pages: 1382-1389
Year: 2017
ISBN: 2156-7085

 
Abstract:
Increased intraocular scatter degrades quality of vision, especially in the presence of glare sources. Standard tests, such as visual acuity, are not well suited to capture this condition. There are specific methods to measure […]

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Optical Measurement of Straylight in Eyes With Cataract

Autors: Onurcan Sahin, Alexandros Pennos, Harilaos Ginis, Lucia Hervella, Eloy A. Villegas, Belen Cañizares, Jose Maria Marin, Ioannis Pallikaris, Pablo Artal
Journal: Journal of Refractive Surgery
Volume: 32 (12)
Pages: 846-850
Year: 2016
ISBN: 1081-597X

 
ABSTRACT
PURPOSE: To measure straylight in a cohort of patients with cataract using a novel optical instrument and to correlate optical straylight values with clinical grade of […]

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Performance evaluation of a two detector camera for real-time video

Autors: Benjamin Lochocki, Adrián Gambín-Regadera, and Pablo Artal
Journal: Applied Optics
Volume: 55, Issue 36
Pages:10198-10203
Year: 2016
ISBN: 1559-128X

 
Abstract
Single pixel imaging can be the preferred method over traditional 2D-array imaging in spectral ranges where conventional cameras are not available. However, when it comes to real-time video imaging, single pixel imaging cannot compete with the framerates of conventional cameras, […]

By |May 24th, 2018|Categories: 2016, Publications||0 Comments

Single pixel camera ophthalmoscope

Autors: Benjamin Lochocki, Adrian Gambín, Silvestre Manzanera, Esther Irles, Enrique Tajahuerce, Jesus Lancis, and Pablo Artal
Journal: OPTICA (OSA)
Volume: 3, Issue 10
Pages:1056-1059
Year: 2016
ISBN: 2334-2536

 
Abstract
Ophthalmoscopes to image the retina are widely used diagnostic tools in ophthalmology and are vital for the early detection of many eye diseases. Although there are various effective optical implementations of ophthalmoscopes, […]

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Intraocular scattering compensation in retinal imaging

Autors: Dimitrios Christaras, Harilaos Ginis, Alexandros Pennos, and Pablo Artal
Journal: Biomedical Optics Express
Volume: 7, Issue 10
Pages: 3996-4006
Year: 2016
ISBN: 2156-7085

 
Abstract
Intraocular scattering affects fundus imaging in a similar way that affects vision; it causes a decrease in contrast which depends on both the intrinsic scattering of the eye but also on the dynamic range of […]

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Minimum change in spherical aberration that can be perceived

Autors: Silvestre Manzanera and Pablo Artal
Journal: Biomedical Optics Express
Volume: 7, Issue 9
Pages: 3471-3477
Year: 2016
ISBN: 2156-7085
Abstract
It is important to know the visual sensitivity to optical blur from both a basic science perspective and a practical point of view. Of particular interest is the sensitivity to blur induced by spherical aberration because it is being used […]

By |May 24th, 2018|Categories: Sin categoría||0 Comments