The DOI matches its Crossref record; 107 of the 107 references it cites were found in a registry or an index.
Photovoltaic retinal prosthesis restores high-resolution responses to single-pixel stimulation in blind retinas
Open accessPublished version of a preprint
Abstract
Abstract Retinal prostheses hold the promise of restoring vision in totally blind people. However, a decade of clinical trials highlighted quantitative limitations hampering the possibility of reaching this goal. A key challenge in retinal stimulation is to independently activate retinal neurons over a large portion of the subject’s visual field. Reaching such a goal would significantly improve the perception accuracy in retinal implants’ users, along with their spatial cognition, attention, ambient mapping and interaction with the environment. Here we show a wide-field, high-density and high-resolution photovoltaic epiretinal prosthesis for artificial vision (POLYRETINA). The prosthesis embeds 10,498 physically and functionally independent photovoltaic pixels, allowing for wide retinal coverage and high-resolution stimulation. Single-pixel illumination reproducibly induced network-mediated responses from retinal ganglion cells at safe irradiance levels. Furthermore, POLYRETINA allowed response discrimination with a high spatial resolution equivalent to the pixel pitch (120 µm) thanks to the network-mediated stimulation mechanism. This approach could allow mid-peripheral artificial vision in patients with retinitis pigmentosa.
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“POLYRETINA reported ex-vivo a spatial resolution of 120 µm (or 20/480) equivalent to the electrode separation [132].”
From Advances in visual prostheses: engineering and biological challenges (2022) · cites this paper as [132]
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“POLYRETINA is a high-density wide-field epiretinal prosthesis containing 10 498 photovoltaic pixels distributed over an active area of approximately 43 • [38,39,131,132].”
From Advances in visual prostheses: engineering and biological challenges (2022) · cites this paper as [132]
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Metadata
- Authors
- Chenais, N. A. L., Airaghi Leccardi, M. J. I., & Ghezzi, D.
- Affiliations
- École Polytechnique Fédérale de Lausanne (CH)
- Corresponding author
- Ghezzi, Diego
- Venue
- Communications Materials
- Published
- 2021-03-05
- Volume
- 2
- Issue
- 1
- ISSN
- 2662-4443 (ISSN-L)
- OpenAlex
- W3134642074
- Cited by
- 110
- References
- 107
- Citations by year
- 2026: 11 · 2025: 20 · 2024: 32 · 2023: 17 · 2022: 18 · 2021: 10
- FWCI
- 8.90
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Communications Materials (publishedVersion, cc-by)
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
- Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Velux Stiftung (1102)
- Gebert Rüf Stiftung (GRS-035/17)
- Fondation Pierre Mercier pour la Science Fondation Pro Visu
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
- Health Sciences › Medicine › Ophthalmology › Retinal Development and Disorders
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Memory and Neural Computing
- Keywords
- retinal prosthesis, epiretinal implants, retinitis pigmentosa, retinal ganglion cells, spatial resolution, artificial vision
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