VioBio Lab at ARVO 2019 (Vancouver, Canada)


You can now check VioBio Lab contributions to ARVO 2019 Annual Meeting on adaptive optics, visual simulation, crystalline lens morphology, corneal biomechanics, accommodating IOLs and cross-linking, and include them in your ARVO itinerary.

Sunday April 28

08:00-09:45. Poster Session. James Germann. Depth-resolved collagen order after in vivo rabbit corneal cross-linking

13:00-14:45. Poster Session:
Susana Marcos “Crystalline lens Gradient Index Profile in the guinea pig myopia model”
Sara Aissati “Testing the effect of ocular aberrations on perceived Transverse Chromatic Aberration”
Shrilekha Vedhkrishnan “Adaptive-optics vision simulation of multifocal lenses for myopia progression”

Monday April 29

11:15-13:00. Poster Session. Geethika Muralidharan “Crystalline lens accommodation through multifocal corrections”

Tuesday April 30

8.45-10:30. Poster Session. Andres de la Hoz. “Photobonded silk-fibroin films for corneal dressing”.

11:45-13:30. Poster Session:
Eduardo Martinez-Enriquez “Eigenlenses: an eigenvectors-based model for full crystalline lens shape description”
Clara Benedi-Garcia “Perceived best focus and visual performance upon induction of astigmatism in presbyopes”

Wednesday May 1

8:30-8:45. Paper Session. Victor Rodriguez-Lopez “Direct subjective refraction with temporal defocus waves”

Thursday May 2

10:15-12:00. Poster Session. Judith Birkenfeld “Assessment of asymmetries in biomechanical properties from corneal deformation imaging”

10:15-10:30. Paper Session. Alberto de Castro “Intra-Ocular Lens Power Calculation using 3D OCT-based Personalized Computer Eye Models”

10:45-11:00. Paper Session. Carlos Dorronsoro “Perceptual and physical limits to temporal multiplexing simulation of multifocal corrections”

11:30-11:45. Paper Session. Maria Vinas “Optical and visual quality with physical and visually simulated presbyopic multifocal contact lenses”

11:45-12:00. Paper Session. Xoana Barcala “Perceptual differences across binocular corrections for presbyopia”

For more information check the ARVO online planner.


Prof. Susana Marcos awarded Ramon y Cajal Medal by the Royal Academy of Sciences

Medalla Ramon y Cajal

The Royal Academy of Sciences, gathered in extraordinary plenary session on March 27, agreed to award the Ramón y Cajal Medal 2019, which rewards the trajectory of Spanish scientists under 50, to Prof. Susana Marcos. 

The jury of the award pointed that Prof. Marcos “has maintained an outstanding scientific career at an international level, with a fully multidisciplinary research program, using concepts of physics, optics, biology, biomechanics, ophthalmology and neuroscience to understand the basic mechanisms of human vision, develop diagnostic tools in ophthalmology and to invent new optical solutions for the correction of the most common vision problems. His work, highly productive both in the academic field and in technology transfer, has a high impact on basic science, the clinic and the ophthalmic industry”.

More information: Real Academia de Ciencias


New in the Lab: Elena Campillo


We welcome Elena Campillo (BSc in Physics, Universidad Complutense de Madrid) who joined Viobio lab with a Predoctoral Fellowship of YEI Program funded by Comunidad de Madrid. She performed her degree practises at IMDEA Nanoscience working at Hypertermia (cancer research with nanoparticles) continuing her final Bachelor Thesis at Instituto de Magnetismo Aplicado.

Elena holds a MSc in Biomedical Technologies Management and Development from the Universidad Carlos III de Madrid. She did her master thesis at Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT).

She will work on Perception and Psychophysics using optotunable lenses.

SILK-EYE, a new ERC Advanced Grant announced to VIOBIO Lab

Silkeye collage I

The European Research Council has announced this year’s ERC Advanced Grant projects, SILK-EYE led by Professor Susana Marcos (Visual Optics and Biophotonics Lab, Institute of Optics, CSIC, Spain) being one of the 10 new grantees from Spanish research institutions. This new ERC grant, follows ERC AdG PRESBYOPIA, ERC PoC OCT4IOL, ERC PoC SimVisSim and ERC PoC LightAIOL, previously granted to the group.

SILKEYE will develop a unique set of strategies for the generation of ocular implants based on silk biomaterials that are more biocompatible and versatile than current synthetic implants, and safer, more functional, more accessible and more affordable than allografts. The project will produce high impact results at the interface of photonics and biology, and has the potential to revolutionize how major corrective procedures in ophthalmology are performed.

Pablo Sanz Diez, MyFun ITN Marie Curie Fellow, secondment at VioBio Lab


We welcome Pablo Sanz Diez to VioBio Lab as a visiting Fellow of the Marie Curie MyFun ITN. Pablo holds a Bachelor in Optics and Optometry and a MSc in Advanced Optic and Optometric Techniques from the University of Murcia, and a MSc in Clinical Optometry and Vision from University of Alicante. He is currently a Marie Curie Early Career Fellow at Carl Zeiss Vision, Tuebingen, and he is visiting VioBio Lab for 3 weeks to undertake studies relating the effect of stimulus features with crystalline lens shape and accommodation.

More information about the MyFUN Innovative Training Network  here.


VioBio Lab participates in the International Day of Women and Girls in Science

Post Mujeres

The VioBio Lab (Instituto de Óptica, CSIC) has joined the celebration of the International Day of Women and Girls in Science (commemorated on February 11th), which seeks to make visible the work of women scientists and promote new scientific vocations in girls.

Gadea Ciencia Foundation organized the round table “Women and Science” with Prof. Susana Marcos, María Blasco and Clara Benedí as invited speakers. During the debate they pointed the importance of a better education from an early age to change stereotypes and the need to normalize the presence of women in certain areas and careers. More information about the event in the next links:

Susana Marcos also attended the opening event of Women and Girls in Science’s Week organized by the Government of the Principality of Asturias and CSIC. The event also included the presentation of The periodic table of women scientists.

With the objective of showing feminine references in science, during two weeks CSIC has organized more than 200 activities throughout Spain. One of the multiple initiatives to celebrate this day, was to release videos of top researchers talking about their careers and why they became scientists. Here is the video featuring Susana Marcos and Carlos Dorronsoro. Finally, visitors to CSIC campus in Madrid will find new banners showcasting prestigious women scientists, including Susana Marcos. More information on all these initiatives can be found in the next article.

Extraordinary impact of Press Conference on SimVis on television and media

rueda de prensa

CSIC and VioBio Lab have presented the validation and launch of SimVis, a simultaneous vision simulator, in a press conference that took place yesterday at CSIC (Calle Serrano 113, Madrid). 

For the first time, patients who undergo cataract surgery will be able to experience how they will improve their vision after the surgery. Thanks to this portable simulator, developed by researchers from the VioBio Lab (CSIC), patients and surgeons have the possibility of seeing the effects of an intraocular multifocal lens realistically before the implantation. Details on the validation of this new device are published in the latest issue of Scientific Reports (Nature).

The technology has led to four patents (one of them received the Best Patent of the Year Award from the Madrid+d Foundation) licensed to 2EyesVision SL, a spin-off company from CSIC, funded, among others, by several of the researchers involved in the development of SimVis. 

“Visual simulators are an ideal technique to provide patients with a realistic experience of multifocality before the implantation of an intraocular lens. In addition, since the device has been reduced in size and has a more practical design than those currently in the market, the benefits multiply, ” Prof. Marcos concluded during the press conference. 

More information about the press conference in the following links: 

First validation of the simulation of commercial intraocular lenses by SimVis, published in Scientific Reports


Multifocal intraocular lenses are used to provide patients to functional vision at various distances. In a recent paper published in Scientific Reports we demostrated the equivalency of through focus visual acuity with real lenses (a bifocal refractive IOL and a trifocal diffractive IOL) and the same lenses simulated in a Spatial Light Modulator and SimVis technology (temporal multiplexing).

Full citation: Maria Vinas, Clara Benedi-Garcia, Sara Aissati, Daniel Pascual, Vyas Akondi, Carlos Dorronsoro & Susana Marcos. Visual simulators replicate vision with multifocal lenses. Scientific Reports 9, 1539 (2019).

Full article here.

CSIC Press release here.

Susana Marcos awarded eWoman Salamanca


Susana Marcos was awarded the Prize eWoman Salamanca for her professional career, in an event sponsored by CaixaBank, Prensa Iberica and La Gaceta de Salamanca. The event promoted the talent of women in technology.

Here you can find more information about the award and the ceremony


Dynamic characterization and control of opto-tunable lenses, published in Optics Express


Tunable lenses are increasingly popular in applications including microscopy, optical coherence tomography, computer vision, quality control, and presbyopic corrections, some of them requiring an accurate control of the optical power of the lens in response to a time-dependent input waveform. In a paper recently published in Optics Express, we present a fast focimeter (3.8 KHz) to characterize the dynamic response of tunable lenses. We demonstrated the compensation of the temporal distortions in the transient responses of optotunable lenses, broadening their potential in high-speed applications. This approach used in the Sim+Vis technology, using a temporal multiplexing approach to simulate multifocal lenses used to correct for presbyopia.

Full reference: Carlos Dorronsoro, Xoana Barcala, Enrique Gambra, Vyas Akondi, Lucie Sawides, Yassine Marrakchi, Victor Rodriguez-Lopez, Clara Benedi-Garcia, Maria Vinas, Eduardo Lage, and Susana Marcos, “Tunable lenses: dynamic characterization and fine-tuned control for high-speed applications,” Opt. Express 27, 2085-2100 (2019).

Full article here

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