The Multifocal Acceptance Score to Evaluate Vision (MAS-2EV), published in Scientific Reports

We present a comprehensive yet clinically viable metric (the Multifocal Acceptance Score, MAS-2EV) to evaluate vision with presbyopic corrections. The MAS-2EV is based on a set of images representing natural visual scenes at day and night conditions projected in far and near displays, and a near stereo target. In this study, the subjects viewed and scored the images through different binocular corrections (monofocal corrections at far; bifocal corrections; monovision and modified monovision) administered with soft contact lenses (in cyclopleged young subjects) or with a binocular simultaneous vision simulator, the SimVis. We found that MAS-2EV has ufficient repeatability and sensitivity to allow differentiation across corrections with only three repetitions. MAS-2EV, particularly in combination with visual simulators, can be applied to select prospective presbyopic corrections in patients prior to contact lens fitting or intraocular lens implantation.

This publication results from collaborative work by VioBio Lab and spin-off company 2EyesVision. MAS-2EV is a trade mark of 2EyesVision. 

Full reference: Xoana Barcala, Maria Vinas, Mercedes Romero, Jose Luis Mendez, Susana Marcos, Carlos Dorronsoro. Multifocal acceptance score to evaluate vision: MAS-2EV. Sci Rep 11, 1397 (2021). https://doi.org/10.1038/s41598-021-81059-0

Full article here

PhD Thesis Defense by Clara Benedí García on January 21 2021

VioBio Lab member Clara Benedí-García will be defending her PhD thesis, entitled “Chromatic and Monochromatic Aberrations and Multifocal Designs: interaction and impact on vision” (PhD supervisors: Prof Susana Marcos & Dr. Maria Viñas). The defense will take place next Jan 21 at 3:30pm (CET) and can be followed remotely (registration required). To register, send an email to delegdecanato@ucm.es before January 20 (Subject: “Asistencia virtual a la Tesis Doctoral de Clara Benedí García”). The language of the defense will be Spanish. The session will be followed through the Goolge Meet Platform: https://meet.google.com/ubx.pdoo-oan

Visual impact of chromatic blur, published in Scientific Reports

Using Adaptive Optics, we investigated the optical and visual effects of correcting monochromatic aberrations when viewing polychromatic grayscale, green, and blue images. Correcting the eye’s monochromatic aberrations improves optical quality of the focused green images, but (confirming our earlier publication in Nature 2002) degrades the optical quality of defocused blue images, particularly in eyes with higher amounts of monochromatic aberrations. Perceptual judgments of image quality tracked the optical findings, but the perceptual impact of the monochromatic aberrations correction was smaller than the optical predictions. Very interesting, the same chromatic defocus in green images decreased perceiveg image quality significantly more than the native chromatic blur in blue images. The visual system appears then to be adapted to the blur produced by the native monochromatic aberrations as well as to defocus in blue.

This study results from collaborative work between the Visual Optics and Biophotonics Lab (Institute of Optics, CSIC), Prof. Stephen A Burns (Indiana University) and Prof. Eli Peli (Schepens Eye Research Institute-MEEI, Harvard Medical School). 

The publication appears in this month’s issue of the Nature’s Group journal Scientific Reports.

Full reference: Benedi-Garcia, C., Vinas, M., Dorronsoro, C., Burns S.A., Peli E, Marcos S. “Vision is protected against blue defocus” Sci Rep 11, 352 (2021). https://doi.org/10.1038/s41598-020-79911-w

Full article here

Latest Recognitions for Prof. Susana Marcos and the VioBio Lab team

Prof. Susana Marcos received the Julio Peláez Award to Pioneer Women in Physics, Chemistry and Mathematics

The V Edition of the Julio Peláez Award Ceremony took place online on November 18 in an event presided by Teodoro Sánchez-Ávila, president of the Tatiana Perez de Guzmán el Bueno Foundation. The president of CSIC, Rosa Menéndez, and Professor Pablo Artal were also invited to the event. The president of CSIC closed the ceremony highlighting the importance of making women in science visible: “It is absolutely necessary to put a name and a face to our scientists, because there are many and very good ones. Clear examples are Dra. Yzuel and Dra. Marcos, authentic references for future generations. They are two great scientists in the field of optics that have developed an excellent science that cannot go unnoticed. The Julio Peláez Awards contribute each year to this work of fair recognition”.

• More information about the award and ceremony here

LightLens, Entrepreneurs 2020 Award for Best Business Idea

LightLens project was awarded Best Business Idea prize of the XVI edition of “Premios Emprendedores”. Two members of the LightLens team collected the award: Rocío Gutiérrez and Andrés de la Hoz. The LightLens project is a tech transfer venture of an accommodating intraocular lens, which mimics the natural functioning of the young crystalline lens, enabled by photobonding, a VioBio Lab developed technology. The concept, prototype and demonstration of an intraocular lens capable of dynamically reshape is the result of the ERC Advanced Grant PRESBYOPIA.

• More information about the award here