Assessment of imaging with extended depth-of-field by means of the light sword lens in terms of visual acuity scale

Kakarenko, Karol; Ducin, Izabela; Grabowiecki, Krzysztof; Jaroszewicz, Zbigniew; Kołodziejczyk, Andrzej; Mira-Agudelo, Alejandro; Petelczyc, Krzysztof; Składowska, Aleksandra; Sypek, Maciej

doi:10.1364/boe.6.001738

Cited by 22 publications

(37 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Performance of the LSL as a corrector element was evaluated recently by means of objective experiments using a simplified model of a presbyopic eye. 24 The results demonstrated that the LSL in a contact lens configuration significantly improves the visual acuity (VA) of a monofocal optical system within a wide range of defocus. Results from the objective experiments and numerical simulations 22,23 showed that the performance of the LSL is superior to other available solutions.…”

mentioning

confidence: 95%

“…These optical elements include axicons with an axial symmetry profile 17 and some structures with an asymmetrical profile such as the cubic phase mask, 18 the peacock eye optical element, 19 and the light sword lens (LSL). 20 Previous studies have proposed use of the LSL to correct presbyopia [20][21][22][23][24] because it was designed to image objects at a wide range of distances. Performance of the LSL as a corrector element was evaluated recently by means of objective experiments using a simplified model of a presbyopic eye.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Compensation of Presbyopia With the Light Sword Lens

Mira-Agudelo

Torres-Sepúlveda

Barrera

et al. 2016

Invest. Ophthalmol. Vis. Sci.

Self Cite

View full text Add to dashboard Cite

Citation: Mira-Agudelo A, TorresSepúlveda W, Barrera JF, et al. Compensation of presbyopia with the light sword lens. Invest Ophthalmol Vis Sci. 2016;57:6870-6877. DOI: 10.1167/iovs.16-19409 PURPOSE. We present the first physiological evaluation of the use of the light sword lens (LSL) for presbyopia compensation. The LSL is an axially asymmetric optical element designed for imaging with extended depth of focus. METHODS.A monocular visual simulator setup is implemented to measure visual acuity (VA). Physiological presbyopia is ''mimicked'' in human subjects by paralysis of the ciliary muscle, using topical application of a muscarinic antagonist. The effect of a contact lens-configured LSL on the mimicked presbyopia visual system is evaluated by measuring VA as a function of target vergence. The ability of the LSL to compensate presbyopia for 2 photopic luminance values was also analyzed. RESULTS.The average VA values for 11 subjects suggest that the LSL can compensate for presbyopia across a wide range of target vergences for which the LSL was designed (À3 to 0 D). However, the proposed corrector element causes a loss of distance VA. The mean logMAR VA in that target vergence range was 0.07. The VA curves also show that luminance does not affect the expected behavior of the LSL-corrected presbyopic eye. CONCLUSIONS.These results indicate that the LSL has significant potential as a visual aid for presbyopia.Keywords: aging changes, ophthalmic optics, presbyopia, vision acuity, visual optics P resbyopia is the decrease in accommodative amplitude of the human visual system that occurs with aging of the eye. 1Although presbyopia is a progressive vision disorder that affects everyone after a certain age, 2 there is no effective way to prevent it. Therefore, over the last 2 decades, important optical investigations have been undertaken to find ways to compensate for this visual condition.Over time, different optical methods to correct presbyopia and restore the ability to recognize both distant and near objects have been proposed.3-6 Some proposals include reading glasses, monovision, residual myopia, multifocal lenses used in glasses, contact lenses, and intraocular lenses. Multifocal intraocular lenses usually are bifocal or trifocal. 7,8 Recent proposals include modifying the topography of the cornea with refractive surgery 4 or inserting a small-aperture (pinhole) implant to artificially reduce the size of the pupil and generate a wider depth of focus. 9Other possible ways to correct presbyopia include varifocal elements based on the Alvarez lenses 10 or programmable lenses based on spatial light modulators, 11,12 which are classified as accommodative lenses. In addition, adjustable lenses that attempt to mimic how the eye lens functions have been designed, 13,14 and changing the optical power by axial displacement of a lens of a fixed focus has also been implanted and tested. 15,16 Despite multiple proposals and scientific advances, there is still no entirely satisfactory way to correct presbyopia. For some p...

show abstract

mentioning

confidence: 95%

mentioning

confidence: 99%

Compensation of Presbyopia With the Light Sword Lens

Mira-Agudelo

Torres-Sepúlveda

Barrera

et al. 2016

Invest. Ophthalmol. Vis. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Desde Polonia, los profesores Zbigniew Jaroszewicz y Andrzej Kolodziejczyk del instituto de Óptica Aplicada de Varsovia y la Universidad Tecnológica de Varsovia, han dejado un legado importante en el estudio de elementos difractivos diseñados para el mejoramiento del sistema visual humano (Kakarenko, et al, 2015). Así mismo, sus enseñanzas han marcado el desarrollo de grupos de estudio de la luz como el de la Universidad de Antioquia.…”

Section: Nuestros Formadoresunclassified

“…Grupos consolidados de investigación en las Universidades de Antioquia, Eafit, ITM, Medellín, Nacional de Colombia Sede Medellín, Politécnico Jaime Isaza Cadavid y Pontificia Bolivariana, constituyen el núcleo más sólido para el estudio de la luz en Colombia. La región cuenta en la actualidad con grupos de investigación es este campo con la máxima categoría otorgada por la rectora de la investigación en Colombia Colciencias, trabajando en temas como óptica visual (Kakarenko, et al, 2015), teoría de coherencia (Castañeda, 2014) El sueño de aquellos que iniciaron el estudio de la luz en Antioquia se ha hecho realidad. Varios grupos de la región son referentes internacionales en su dominio de conocimiento.…”

Section: El Estudio De La Luz Se Mantiene Hasta Nuestros Díasunclassified

La luz a Antioquia llegó desde Austria y perdura

Medina-Estrada

Garcı́a-Sucerquia

2015

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

View full text Add to dashboard Cite

ResumenSe presenta en este artículo un recuento resumido desde la perspectiva de los autores de la forma como se inició el estudio de la luz en Antioquia y como se mantiene. Se hace énfasis en las contribuciones a este proceso por parte del Prof. Dr. Peter Barlai, quien llegó desde Austria al principio de los años 70, estableció las bases de los grupos de óptica de las dos Universidades más importantes de la región antioqueña. Se mencionan además, los aportes a la constitución de los demás grupos que estudian la luz en Antioquia por parte de instituciones nacionales e internacionales. Se muestra la conexión existente entre el trabajo actual de los grupos más representativos y los estudios originales en el campo de la luz en la región.Palabras clave: óptica en Antioquia, Peter Barlai. Light came to Antioquia from Austria and last AbstractIn this paper, we present a condensed summary on the onset of the study of light in Antioquia and how it has prevailed until today. We highlight the contributions of Prof. Dr. Peter Barlai since he arrived from Austria in the early seventies, and how he laid the basis for the establishment of the optics groups of the two leading Universities of Antioquia. In addition, we explain the involvement of national and international institutes in the formation of the optics groups of Antioquia, as well as the link between the original onset of the study of light and the current interest of the leading groups.Key words: Optics in Antioquia, Peter Barlai. Crónicas IntroducciónLa celebración de un evento tan importante como el Año Internacional de la Luz 2015 trajo a nuestro país eminentes personajes de la escena mundial en tema relacionados con la luz, entre los que se encontraban premios Nobel en física, e incentivó a personalidades del más alto nivel gubernamental a interesarse por el que hacer con la luz. El Presidente de la República y la Ministra de Educación, se animaron a mirar hacia los que estudiamos este temática y permitió a una gran cantidad de ciudadanos que leen la hora en su reloj de pulsera, o en su teléfono inteligente, a acercarse a temas tan exóticos como relojes atómicos con exactitud en el rango de las oscilaciones atómicas o el entrelazamiento cuántico entre partículas; a algunos nos permitió distraernos de nuestra agitada vida para atender a tan ilustres visitantes y para preguntar por temas como: ¿de dónde surgió el interés por la luz en nuestro entorno?, quizás con el ánimo de ofrecer un reconocimiento hasta ahora negado a todos aquellos que nos inculcaron el interés por estudiar la luz, entendida ésta como esa oscilación electromagnética que nos maravilla.Atendiendo a esta inquietud y en el inigualable marco de la celebración del Año Internacional de la Luz 2015, queremos hacer un recuento de cómo llegó la luz a Antioquia para perdurar hasta nuestros días, entendiendo esta frase como la forma en la cual se estableció el estudio de las ondas electromagnéticas.

show abstract

“…[5][6][7][8][9][10][11][12][13][14][15][16] Nevertheless, it has been shown that cubic and trefoil-shaped phases are most used to achieve high-quality images when spherical aberration, 10,11) astigmatism 14,15) and high orderaberrations 15) are also present in the system. WFC can be found in many different applications such as in ophthalmic optics, [15][16][17] iris recognition, 18,19) complexity reduction in optical systems, 20) control of thermal defocus in infrared systems, 21) barcode reading, 22) and microscopy, 23) among many others. The DOF in each application can be extended by a trefoil phase at the exit pupil of the optical system, and the trade-off between the DOF and the image resolution properties is dependent on the peak-to-valley value (strength) of the phase.…”

Section: Introductionmentioning

confidence: 99%

Effect of spherical aberration in trefoil phase plates on color wavefront coding

Olvera-Angeles

Padilla-Vivanco

Sasián

et al. 2018

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Wavefront coding is a technique that makes use of aspheric phase masks and image processing to greatly increase the depth of focus and/or reduce the cost of imaging systems. The phase mask adds a controlled amount of aberrations to the optical system in such a way that invariant imaging properties are achieved over a wide range of defocus. When aspheric phase plates are fabricated, their shape has to be carefully designed to avoid introducing other aberrations into the optical system, which could reduce its performance. In this work, we will show how inherent spherical aberration for trefoil-shaped phase plates reduces the quality of color images. Results will be illustrated with numerical simulations. We will show that a fourth-order polynomial added to a trefoil shaped phase mask can avoid the plate generating undesired spherical aberration that will affect the final quality of the decoded color images.

show abstract

Assessment of imaging with extended depth-of-field by means of the light sword lens in terms of visual acuity scale

Cited by 22 publications

References 30 publications

Compensation of Presbyopia With the Light Sword Lens

Compensation of Presbyopia With the Light Sword Lens

La luz a Antioquia llegó desde Austria y perdura

Effect of spherical aberration in trefoil phase plates on color wavefront coding

Contact Info

Product

Resources

About