Author Archives: vioBioLab

Intraocular photobonding of intraocular lenses published in Translational Vision Science and Technology


Accommodating Intraocular Lenses are enabled by the engagement of the haptics with the peripheral region of the capsular bag. In a previous work we demonstrated photo-activated strong bonding of the capsular bag and polymer material. We have now proved intraocular photobonding, compliant with standard cataract surgery, using Rose Bengal as a photo-activator and green light for photoirradiation.

The work is published in the October 2018 issue of the ARVO journal Translational Vision Science and Technology. 

Full reference: Nicolas Alejandre-Alba; Rocío Gutiérrez-Contreras; Carlos Dorronsoro; Susana Marcos. Intraocular Photobonding to Enable Accommodating Intraocular Lens Function. Translational Vision Science & Technology October 2018, Vol. 7, 27. doi:10.1167/tvst.7.5.27

Full article:


Job Offer: Predoctoral contract FPI



The Visusal Optics and Biophotonics Lab (Institute of Optics, CSIC) offers a FPI predoctoral grant linked to the project FIS2017-84753-R: “New optical technologies to understand and treat myopia”. The FPI 2017 call is now open, until October 29th. 

See full profile and contact details here

MyFun Marie Curie Outreach Activity by IOSA Student Chapter at the Royal Botanical Garden


IOSA Student Chapter is organizing a very special event that will be part of the ITN Marie Curie MyFun Summer School 2018 held in Madrid. The event will be an outreach activity in which early-stage researchers from around the world will explain myopia to the general audience through different workshops. The activity will take place Tuesday 16th from 17h to 19h at Real Jardín Botánico (Plaza de Murillo 2, Madrid).

IOSA is the OSA-EPS student chapter at the Institute of Optics (CSIC), composed of young researchers working on optics and physics, actively involved in broadening their scientific knowledge among the general population.

MyFUN (“Myopia: Fundamental Understanding Needed”) is an Innovative Training Network (ITN) funded by the European Commission’s Horizon 2020 programme under the Marie Skłodowska Curie Actions.

The Royal Botanical Garden of Madrid is a research center of CSIC founded in 1755. Its mission is to promote the knowledge and conservation of plants and their natural environment.

Marie Curie ITN MyFun Summer School and Annual Meeting next week in Madrid

MyFun Logos

VioBio Lab will be hosting the 2018 Summer School and Annual Meeting (16-19 October) at the Institute of Optics in Madrid. The program will feature hands on applications of optical technologies in ophthalmology and novel treatments for myopia. Invited lectures include Prof. Andy Yun (Wellman Center of Photomedicine, MGH-HArvar, USA), Prof. Sally McFadden (University of NewCastle, New SouthWales, Australia), Prof. Christine Wildsoet (UC Berkeley, USA), Prof. Don Mutti (Ohio State University, USA), and Prof. José González-Meijome (University of Minho, Portugal). Other contributions will come from MyFun Marie Curie Principal Investigators, VIOBIO Lab Members and MyFun Fellows, as well as a outreach activity by IOSA Student Chapter. 

MyFUN (“Myopia: Fundamental Understanding Needed”) is an In Innovative Training Network funded by the European Commission’s Horizon 2020 program under the Marie Skłodowska Curie Actions, comprising seven European universities, research institutions and companies. 

María Viñas, selected OSA Ambassador 2019 by the Optical Society of America

OSA Ambassador Maria

Dr. María Viñas, a postdoctoral researcher at the Visual Optics and Biophotonics Lab, has been selected OSA Ambassador for 2019. The Optical Society Ambassadors will share their experiences with students and early career professionals in the field. They will provide mentorship and technical knowledge through serving as a traveling lecturer for chapters and sections, supporting professional development events at OSA meetings.

Congratulations María!

New in the lab: Alessandra Carmichael


We welcome to VioBio Lab Alessandra Carmichael Martins, visiting Fellow of the MyFun Marie Curie ITN. Alessandra holds a Bachelor in Physics from the University of Seville, having been a student at Universidad Complutense de Madrid for one year during this time, and a MSc in Optics and Photonics from Imperial College London, UK. She is currently a ITN Marie Curie Fellow from the MyFun Network in the Advanced Optical Imaging Group at University College Dublin, Ireland, under the supervision of Brian Vohnsen. During her secondment at VioBio (CSIC) she will be working on manipultating the optics and Stiles-Crawford Effect with Adaptive Optics systems.

VioBio Lab and 2EyesVision at the Presbyopia Conference and Congress of the ESCRS in Vienna

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Investigators from the Visual Optics and Biophotonics Lab and the spin-off company 2EyesVision will present latest results Sept 21-26 in Vienna.

Follow the schedule of VioBio presentations:

ISOP Presbyopia 2018: 

Friday 21

8:23h Maria Viñas “Simulating Presbyopic Corrections with a Headmounted Binocular Simultaneous Vision Simulator”

17:18h Susana Marcos “Enabling Techniques for AIOLs: In Vivo Capsular Bag Quantification and Pheotobonding-Based Engagement”

36th Congress of the ESCRS:

Sunday 23. 13:55h Susana Marcos. Workshop on Visual Optics : “Aberrations of the optical system”

Monday 24. 14:48h Xoana Barcala “Repeatability of the multifocal acceptance score (MAS)”

Tuesday 25

8:00h Susana Marcos. Free Paper Session 27: “Biometry & Quality of Vision”.

9:30h Susana Marcos. “Chromatic aberration in patients implanted with hydrophilic and hydrophobic monofocal and FineVision trifocal IOLs measured in vivo”.

In addition, 2Eyes Vision will present the SimVis Gekko, simulator of presbyopic corrections, at the ESCRS Exhibit (Visit Booth: C224).

VioBio Lab members are highly involved in Scientific Societies and Institutional service


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Susana Marcos, PhD is currently Vicepresident of the Scientific-Technical Committee of the Spanish Research Agency, Member of the Advisory Board of Fundacion General CSIC, Member of the Advisory Board of Fundación Gadea Ciencia, Member of the Science-Industry Committee of the Royal Society of Physics, Faculty of M+Vision MIT-LINQ, Editorial Board Member of Optica (high impact factor of the Optical Society), Member of the Publication Council (Optical Society), Advisor of IOSA Student Chapter (Optical Society of America).

Maria Viñas, PhD is currently Vice-Chair of the Vision Sciences Committee and Chair of the Women in Optics Committee of the Spanish Optical Society (SEDOPTICA).

Judith Birkenfeld, PhD is Vice-Chair of the Microscopy and Optics Technical Group (Optical Society), Faculty of M+Vision MIT-LINQ and Mentor at the International Mentoring Foundation for the Advancement of Higher Education.

Carlos Dorronsoro, PhD is the Vicedirector of the Institute of Optics (CSIC) and Board Member of the Image Techniques Committee of SEDOPTICA.

Clara Benedi, MSc is the President of the IOSA Student Chapter.

Three VioBio Lab members obtain competitive positions in the lab

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Mercedes Romero was granted a Research Associate Position from the Spanish Ministry of Science and Innovation (Personal Técnico de Apoyo Program). She (BSc in Optics & Optometry and a MSc in Optical Technologies by Universidad Complutense de Madrid), has a large experience in clinical practice (20022015) and was previously granted a JAE INTRO Fellowship to undertake research at the Visual Optics and Biophotonics Lab. 

Victor Rodríguez was granted a Predoctoral Fellowship from the Spanish Ministry of Education (Formación de Personal Universitario Program). He finished a BSc in Optometry in 2016 and has a MSc in Optical Technologies both by Universidad Complutense de Madrid. He will be investigating the use of optotunable lenses in visual perception experiments.

Dr. Judith Birkenfeld was granted a Mutiply COFUND Postdoctoral Contract, a Marie Curie EU Program. Judith’s background is in Physics (MSc, Heidelberg University) and Visual Optics and Biophotonics (PhD Universidad Complutense de Madrid), having graduated under the supervision of Prof. Susana Marcos. She has enjoyed a M+Vision Postdoctoral Fellowship and undertake research at MIT, Brigham and Women’s Hospital, Mass General Hospital and VioBio Lab working on translational projects in biomedicine. Her interests are in the area of ocular imaging (OCT and microscopy) and applications to ocular biomechanics.

Impact of IOL decentration of different aspheric IOL designs on optical quality


An experimental model eye was used to study the impact of intraocular lens decentration on optical aberrations (astigmatism and coma) and optical quality (MTF and Strehl) with different state-of-the-art aspheric IOLs. We found that the increase in aberrations/reduction of optical quality upon decentration depends on the specific IOL design, with the Vininex (Hoya XY1) being the most immune design to decentration. The study has been published in the Journal of Cataract and Refractive Surgery.

Full reference: Pablo Perez-Merino & Susana Marcos. Effect of intraocular lens decentration on image quality tested in a custom model eye. Journal of Cataract & Refractive Surgery 44, 889-896 (2018). 

Full article here.


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