Visual perception in a blind subject with a chronic microelectronic retinal prosthesis
Open accessAbstract
A retinal prosthesis was permanently implanted in the eye of a completely blind test subject. This report details the results from the first 10 weeks of testing with the implant subject. The implanted device included an extraocular case to hold electronics, an intraocular electrode array (platinum disks, 4 x 4 arrangement) designed to interface with the retina, and a cable to connect the electronics case to the electrode array. The subject was able to see perceptions of light (spots) on all 16 electrodes of the array. In addition, the subject was able to use a camera to detect the presence or absence of ambient light, to detect motion, and to recognize simple shapes.
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Due to axonal activation, phosphenes often appear with an elongated shape distorting the image perceived by the patient.
“Due to axonal activation, phosphenes often appear with an elongated shape distorting the image perceived by the patient [46].”
From Advances in visual prostheses: engineering and biological challenges (2022) · cites this paper as [46]
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- Authors
- Humayun, M. S., Weiland, J. D., Fujii, G. Y., Greenberg, R., Williamson, R., Little, J., Mech, B., Cimmarusti, V., Van Boemel, G., Dagnelie, G., & de Juan, E.
- Affiliations
- University of Southern California (US)
- Second Sight Medical Products (US)
- Johns Hopkins University (US)
- Corresponding author
- Humayun, Mark S.
- Venue
- Vision Research
- Publisher
- Elsevier BV
- Published
- 2003-11
- Volume
- 43
- Issue
- 24
- Pages
- 2573-2581
- ISSN
- 0042-6989 (ISSN-L)
- OpenAlex
- W2131773286
- Cited by
- 856
- References
- 21
- Citations by year
- 2026: 11 · 2025: 14 · 2024: 15 · 2023: 13 · 2022: 26 · 2021: 23 · 2020: 20 · 2019: 26 · 2018: 22 · 2017: 32 · 2016: 36 · 2015: 31 · 2014: 46 · 2013: 62 · 2012: 52
- FWCI
- 15.48
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Vision Research (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation
- National Eye Institute (R01EY012843)
- 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
- retinal prosthesis, visual perception, platinum electrode, light perception, motion detection, shape recognition, chronic implantation
- MeSH terms
- Aged, Blindness, Electrodes, Implanted, Humans, Male, Photoreceptor Cells, Retina, Retinitis Pigmentosa, Visual Perception, Treatment Outcome, Prostheses and Implants
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