20 papers · ranked by Valyu relevance
Melani Sanchez-Garcia, Roberto Morollon-Ruiz, Rubén Martínez-Cantín, J.J. Guerrero + 1 more
'J.J. Guerrero' 'Eduardo Fernández'] Abstract. Objective. Current visual implants still provide very low resolution and limited field of view, thus limiting visual acuity in implanted patients. Developments of new strategies of artificial vision simulation systems by harnessing new advancements in technologies are of…
Jacob Granley, Alexander Riedel, Michael Beyeler
Cortical prostheses are devices implanted in the visual cortex that attempt to restore lost vision by electrically stimulating neurons. Currently, the vision provided by these devices is limited, and accurately predicting the visual percepts resulting from stimulation is an open challenge. We propose to address this…
Eduardo Fernandez, Jose Antonio Robles
The past 20 years have witnessed significant advancements in the field of visual prostheses, with developments spanning from early retinal implants to recent cortical approaches. This Perspective looks at some of the remaining challenges to achieve the ambitious clinical goals that these technologies could enable.
Reham H. Elnabawy, Slim Abdennadher, Olaf Hellwich, Seif Eldawlatly
Blindness is a main threat that affects the daily life activities of any human. Visual prostheses have been introduced to provide artificial vision to the blind with the aim of allowing them to restore confidence and independence. In this article, we propose an approach that involves four image enhancement techniques…
Jing Wang, Rongfeng Zhao, Peitong Li, Zhiqiang Fang + 5 more
'Yanling Han' 'Ruyan Zhou' 'Yun Zhang' 'Francesca Uccheddu'] Visual prostheses, used to assist in restoring functional vision to the visually impaired, convert captured external images into corresponding electrical stimulation patterns that are stimulated by implanted microelectrodes to induce phosphenes and eventually…
Guoliang Xu, Jinyi Long, Jia Zhang
Visual prostheses hold great promise for restoring vision in blind individuals. While researchers have successfully utilized M/EEG signals to evoke visual perceptions during the brain decoding stage of visual prostheses, the complementary process of converting images into M/EEG signals in the brain encoding stage…
Vicky Karadima, Elizabeth A. Pezaris, John S. Pezaris
With the advent of multiple visual prosthesis devices to treat blindness, the question of how potential patients view such interventions becomes important in order to understand the levels of expectation and acceptance, and the perceived risk-reward balance across the different device approaches. Building on previous…
Luca Baroni, Martin Picek, Saumil Patel, Andreas S. Tolias + 1 more
Cortical prosthetic systems offer a promising path to restoring vision in blindness by stimulating neurons in the visual cortex to evoke visual percepts. To effectively encode visual information, however, it is essential to target neurons based on their functional encoding properties. Current stimulation protocols…
Rick van Hoof, Antonio Lozano, Feng Wang, P. Christiaan Klink + 2 more
Recent strides in neurotechnology offer hope for restoring vision in individuals afflicted with blindness due to early visual pathway damage. We present a comprehensive method to optimize electrode placement for visual prostheses, with the objective of aligning with predetermined phosphene distributions. Our approach…
Jonathan Skaza, Shravan Murlidaran, Apurv Varshney, Ziqi Wen + 3 more
Efforts to restore vision via neural implants have outpaced the ability to predict what users will perceive, leaving patients and clinicians without reliable tools for surgical planning or device selection. To bridge this critical gap, we introduce a computational virtual patient (CVP) pipeline that integrates…
Maureen van der Grinten, Jaap de Ruyter van Steveninck, Antonio Lozano, Laura Pijnacker + 6 more
Blindness affects millions of people around the world, and is expected to become increasingly prevalent in the years to come. For some blind individuals, a promising solution to restore a form of vision are cortical visual prostheses, which convert camera input to electrical stimulation of the cortex to bypass part of…
Jaap de Ruyter van Steveninck, Mo Nipshagen, Marcel van Gerven, Umut Güçlü + 2 more
The enabling technology of visual prosthetics for the blind is making rapid progress. However, there are still uncertainties regarding the functional outcomes, which can depend on many design choices in the development. In visual prostheses with a head-mounted camera, a particularly challenging question is how to deal…
Justin Kasowski, Michael Beyeler
The World Health Organization has estimated that by the year 2050, roughly 114.6 million people will be living with incurable blindness and 587.6 million people will be affected by severe visual impairment . Although some affected individuals can be treated with surgery or medication, there are no effective treatments…
Justin Kasowski, Michael Beyeler
raster pattern for retinal implants Authors: ['Justin Kasowski' 'Michael Beyeler'] Approach: Sighted participants completed letter recognition and motion discrimination tasks under four raster patterns (horizontal, vertical, checkerboard, and random) using an immersive SPV system. The simulations employed…
Melani Sanchez-Garcia, Rubén Martínez-Cantín, Jesús Bermúdez-Cameo, J.J. Guerrero
VR system Authors: ['Melani Sanchez-Garcia' 'Rubén Martínez-Cantín' 'Jesús Bermúdez-Cameo' 'J.J. Guerrero'] Visual prostheses are designed to restore partial functional vision in patients with total vision loss. Retinal visual prostheses provide limited capabilities as a result of low resolution, limited field of view…
Franklin Leong, Babak Rahmani, Demetri Psaltis, Christophe Moser + 1 more
A fundamental challenge in neuroengineering is determining a proper input to a sensory system that yields the desired functional output. In neuroprosthetics, this process is known as sensory encoding, and it holds a crucial role in prosthetic devices restoring sensory perception in individuals with disabilities. For…
Daniele Giansanti, Claudio R. Mirasso
Title: Simple Summary Neuro-prosthetics for vision restoration have advanced with technologies like retinal and cortical implants and non-invasive stimulation methods, aiming to enhance functionality and real-time object recognition. A narrative review of 16 recent studies highlights significant progress and the…
Jing Wang, Hamid Azimi, Yilei Zhao, Melanie Kaeser + 3 more
The lateral geniculate nucleus (LGN), a retinotopic relay center where visual inputs from the retina are processed and relayed to the visual cortex, has been proposed as a potential target for artificial vision. At present, it is unknown whether optogenetic LGN stimulation is sufficient to elicit behaviorally relevant…
Audrey Leong, Yueming Li, Thijs R. Ruikes, Julien Voillot + 13 more
Retinal degenerative diseases of photoreceptors are a leading cause of blindness with no effective treatment. Retinal prostheses aim to restore sight by stimulating remaining retinal cells. Here, we present a photoacoustic retinal stimulation technology. We designed a polydimethylsiloxane and carbon-based flexible film…
Kevin Y. Wu, Mina Mina, Jean-Yves Sahyoun, Ananda Kalevar + 2 more
'Simon D. Tran' 'Antonios Kelarakis'] A retinal prosthesis, also known as a bionic eye, is a device that can be implanted to partially restore vision in patients with retinal diseases that have resulted in the loss of photoreceptors (e.g., age-related macular degeneration and retinitis pigmentosa). Recently, there have…