Cited by 177Neuroscience and Neural EngineeringTactile and Sensory InteractionsRetinal Development and Disorders

The detection of motion by blind subjects with the epiretinal 60-electrode (Argus II) retinal prosthesis

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Dorn, Jessy D., Ahuja, Ashish K., Caspi, Avi, da Cruz, Lyndon, Dagnelie, Gislin, Sahel, Jose-Alain, Greenberg, Robert J., McMahon, Matthew J. +1 more·2013·JAMA Ophthalmology

Abstract

OBJECTIVE: To investigate the ability of 28 blind subjects implanted with a 60-electrode Argus II (Second Sight Medical Products Inc) retinal prosthesis system to detect the direction of a moving object. METHODS: Blind subjects (bare light perception or worse in both eyes) with retinitis pigmentosa were implanted with the Argus II prosthesis as part of a phase 1/2 feasibility study at multiple clinical sites worldwide. The experiment measured their ability to detect the direction of motion of a high-contrast moving bar on a flatscreen monitor in 3 conditions: with the prosthesis system on and a 1-to-1 mapping of spatial information, with the system off, and with the system on but with randomly scrambled spatial information. RESULTS: Fifteen subjects (54%) were able to perform the task significantly better with their prosthesis system than they were with their residual vision, 2 subjects had significantly better performance with their residual vision, and no difference was found for 11 subjects. Of the 15 better-performing subjects, 11 were available for follow-up testing, and 10 of them had significantly better performance with normal rather than with scrambled spatial information. CONCLUSIONS: This work demonstrates that blind subjects implanted with the Argus II retinal prosthesis were able to perform a motion detection task they could not do with their native vision, confirming that electrical stimulation of the retina provides spatial information from synchronized activation of multiple electrodes. TRIAL REGISTRATION: clinicaltrials.gov Identifier:NCT00407602

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Authors
Dorn, J. D., Ahuja, A. K., Caspi, A., da Cruz, L., Dagnelie, G., Sahel, J.-A., Greenberg, R. J., McMahon, M. J., & Argus II Study Group, F. T.
Affiliations
  • Second Sight Medical Products (US)
  • University of Southern California (US)
Corresponding author
Dorn, Jessy D.
Venue
JAMA Ophthalmology
Published
2013-02-01
Volume
131
Issue
2
Pages
183
ISSN
2168-6165 (ISSN-L)
OpenAlex
W2024323852
Cited by
177
References
12
Citations by year
2026: 10 · 2025: 8 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 16 · 2020: 16 · 2019: 14 · 2018: 16 · 2017: 17 · 2016: 22 · 2015: 13 · 2014: 20 · 2013: 9
FWCI
5.53
Type
journal article
Language
en
Open access
Locations
  • JAMA Ophthalmology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
National Eye Institute (R24EY012893, EY012893, R01EY012893, R01EY021220)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
Keywords
Argus II, retinal prosthesis, motion direction detection, retinitis pigmentosa, blindness, spatial mapping, visual prosthesis
MeSH terms
Adult, Aged, Blindness, Electrodes, Implanted, Electric Stimulation Therapy, Feasibility Studies, Female, Humans, Male, Microelectrodes, Middle Aged, Motion Perception, Perceptual Disorders, Retina, Retinitis Pigmentosa, Sensory Thresholds, Treatment Outcome, Prosthesis Implantation, Visual Prosthesis

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