Linking science and art: Susana Marcos discussing presbyopia around a painting at the Prado Museum


Susana Marcos discusses art and science at the Museo del Prado, around the painting of Saint Jeronimus reading a letter, by French artist Georges de la Tour. The program is an inniative of the Fundacion Para la Ciencia y la Tecnología, and Museo del Prado, and was featured in La Aventura del Saber, of RTVE
You can now watch the video (in Spanish):

Susana Marcos, selected member of the “Seleccion Española de Ciencia” by QUO


The Spanish science magazine QUO has selected the third Seleccion Española de Ciencia, formed by the most prestigious researchers in Spain. This year’s selection includes Prof. Susana Marcos Director of the Visual Optics and Biophotonics Lab at the Instituto de Optica, CSIC.

Full link to article (in Spanish):

Link to interview to Susana Marcos (in Spanish):


Susana Marcos OSA Light the Future Lecture “An Eye into the Future” available online


Join OSA 100th anniversary with the Light The Future speaker series featuring distinguished scientists, engineers and Nobel Laureates. Susana Marcos, Professor of Research, Instituto de Óptica, Consejo Superior de Investigaciones Científicas and OSA Fellow, gave a public presentation at LAOP, Wednesday, 24 August 2016. The video of the presentation is now freely available online, courtesy of the Optical Society.

Link: Susana Marcos OSA Light the Future Lecture “An Eye into the Future” available online

“An Eye into the Future”
The eye is a fascinating optical system, yet its performance gets compromised with age and disease. Myopia affects 25% of the population (90% in some Asian countries) and its prevalece is raising. Presbyopia, the age-related loss of the crystalline lens to accommodate near and far, affects 100% of the population over 45 years of age. Light-based technologies and optics allow us for a better diagnosis and treatment of the eye. Future optical technologies hold promise for restoring sight and will be key in improving eye care for all.

SimVis Technology featured in EyeWorld Video Reporter at ESCRS


Susana Marcos explains SimVis, a wearable, see-through, binocular simultaneous vision simulator,  providing patients the experience to see the world thru presbyopic corrections.


Full video collection from EyeWorld video Reporter at ESCRS in Copenhaguen can be found at:

Seven lectures on presbyopia correction, visual simulation, multifocal lenses and aberrations at upcoming meetings in Copenhagen (ISOP 2016 & ESCRS)


Busy schedule for VioBio Lab research on presbyopia correction, optical and visual quality featured in two of the most important conferences in the field, hold in the next weeks in Copenhagen).  Note the following schedule of lectures by Susana Marcos in these conferences.

Friday 9
ISOP 2016. Susana Marcos,  Program Committee, Moderator and Speaker

Talk: New Technologies to Aid in Presbyopic Correction Selection
Round table discussion on “Presbymechanics” with Jorge Alio, Susana Marcos & Dan Neal
Moderator of session “Lenticular methods of presbyopia correction”, with Bernhard Febrer Bowen, Ronald Kruger and SSusana marcos.

Link to program:

Saturday 10- Tuesday 13
ESCRS 2016. Susana Marcos, Speaker

Saturday 10

Start Time 1:00 PM,

Session ID: SAT: Oculentis1.1,

Title:  Mythbuster: does LENTIS Mplus generate coma?

Start Time 1:45 PM

Session ID:  Clinical Research Sym 3.02

Title: Handheld device for stimulating multifocal lenses outcomes

Sunday 11

Start Time 8:30 AM

Session ID: Workshop on Visual Optics 1.03

Title: Aberrations of the optical system

Monday 12

Start Time 1:00 PM

Session ID: SAT: PhysIOL1.1

Title: Chromatic aberration in patients implanted with hydrophylic and hydrophobic PhysIOL IOLs

Tuesday 13

Start Time 9:18 AM

Session ID: FP-26991

Title: Insights on optical and visual performance with rotational asymmetric multifocal intraocular lenses

VioBio Lab represented at Visual and Physiological Optics (VPO2016) Conference in Antwerp, Belgium



Vyas Akondi and Miriam Velasco presented at VPO2016, the xxth Edition of the Visual and Physiological Optics, two different studies pertaining the understanding and correction of presbyopia. Dr. Vyas Akondi presented computational validations of the Simultaneous Vision Simulator and its capability of representing different diffractive, refractive and extended depth of focus real IOLs. Miriam Velasco presented 3-D OCT-based measurements of the morphology of the presbyopic crystalline lens.

Link to the program:

The Optical Society of America (OSA), and the Spanish Council for Scientific Research (CSIC) highlights our recent publication in Optica about the SimVis


Both the Optical Society of America (CSIC) and the Spanish Council for Scientific Research (CSIC) have selected our recent publication in Optica about the Simultaneous vision device for promotion to the media via news releases (links below). This has triggered international media coverage of our research about SimVis.


Press Release – Optical Society of America (OSA)

Press Release in Spanish – Spanish Council for Scientific Research (CSIC)

SimVis research at VioBio

2Eyes Vision

A portable simultaneous vision device simulating multifocal corrections, published in Optica (Optical Society of America).


Multifocal lenses are increasingly used solutions for presbyopia, the age-related loss of crystalline lens focus ability. These lenses work by the principle of simultaneous vision, superimposing focused and defocused images on the retina. Providing the experience of simultaneous vision to a patient before permanent implantation of a multifocal lens is a recognized unmet need to increase the patient’s confidence and optimize the lens selection. In this study we developed a hand-held, see-through multifocal vision simulator based on temporal multiplexing of a tunable lens. After calibration and validation of the device, we measured nine patients with three monofocal, two bifocal, and two trifocal simulated corrections. Visual performance and perceptual quality with multifocal corrections varied across patients. The simultaneous vision simulator proved a promising compact tool to study visual performance with multifocal corrections and to select the lens design best suited for each patient, alternative to costly and bulky adaptive optics based devices.

The study has been published in Optica, a high impact journal of the Optical Society of America.

Full reference:

Carlos Dorronsoro, Aiswaryah Radhakrishnan, José Ramón Alonso-Sanz, Daniel Pascual, Miriam Velasco-Ocana, Pablo Pérez Merino y Susana Marcos. Portable simultaneous vision device to simulate multifocal corrections. Optica. DOI: 10.1364/OPTICA.3.000918

Susana Marcos Keynotes The Optical Society’s Light the Future Program at Latin American Optics and Photonics


The Optical Society (OSA), the leading global professional association in optics and photonics will host the latest in its Light the Future speaker series with speaker Susana Marcos, Institute of Optics, CSIC, Madrid, Spain. The program will take place at the Latin America Optics and Photonics (LAOP), a premier international conference in Latin America promoting industry development in optics and photonics within Latin America, on Wednesday, 24 August 2016, 18:15 –19:00 COT in Medellín, Colombia.Marcos͛ presentation ͞An Eye Into the Future͟ will explore the advances in light-based optical technologies that are paving the way for better diagnosis and treatment of eye ailments such as Myopia and Presbyopia.

The Light the Future speaker series will tour eight international cities as part of The Optical Society͛s Centennial program, featuring visionaries, futurists and Nobel Prize winners discussing how science affects our lives every day.

Full OSA press release:


Simulation of angularly and radially segmented multifocal patterns in an adaptive optics simulator, published in Vision Research.



We evaluated, optically and psychophysically, the quality provided by multizone radial and angular segmented phase designs in 8 subjects using a custom-developed Adaptive Optics (AO) We found that 2-zone segmented designs (angular & radial) provided better performance for far and near vision, 3- and 4-zone segmented angular designs performed better for intermediate vision. AO-correction of natural aberrations of the subjects modified the response for the different subjects but general trends remained. 

The Adaptive Optics Visual Simulator developed in the current study allows evaluating vision with any multifocal solution, while controlling the natural aberrations of the subject and  allows a better understanding of optical and visual interactions in multifocal simultaneous vision corrections, and to investigate whether these interactions are driven by optical or by neural effects, These results are important to improve intraocular lens design and to select the optimal design for a patient.

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