Artificial vision by direct optic nerve electrode (AV-DONE) implantation in a blind patient with retinitis pigmentosa
Abstract
The purpose of this study was to evaluate the efficacy and safety of artificial vision by using a direct optic nerve electrode (AV-DONE) in a blind patient with retinitis pigmentosa (RP). This device, comprising three wire electrodes (0.05 mm in diameter), was implanted into the optic disc of a patient with RP with no light perception vision and the device was left implanted. Six months later, visual sensations were elicited by electrical stimulation through each electrode and the thresholds for the phosphene perception elicited by pulses of 0.25-ms duration/phase and a pulse frequency of 320 Hz were 30, 5, and 70 microA for each electrode. The phosphenes, which ranged in size from that of a match head to an apple, were round, oval, or linear, primarily yellow, and focally distributed. The area of the phosphenes changed when the electrical stimulation was supplied from different electrodes. No complications arose during the follow-up period. Localized visual sensations were produced in a blind patient with advanced RP, suggesting that our system could lead to the development of a useful visual prosthesis system.
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Three platinum wires were implanted in the optic disc of an RP patient eliciting phosphenes in three distinct positions for each electrode.
“Three platinum wires were implanted in the optic disc of an RP patient eliciting phosphenes in three distinct positions for each electrode [70].”
From Advances in visual prostheses: engineering and biological challenges (2022) · cites this paper as [70]
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- Authors
- Sakaguchi, H., Kamei, M., Fujikado, T., Yonezawa, E., Ozawa, M., Cecilia-Gonzalez, C., Ustariz-Gonzalez, O., Quiroz-Mercado, H., & Tano, Y.
- Affiliations
- Osaka University Hospital (JP)
- The University of Osaka (JP)
- Nidek (Japan) (JP)
- Asociacion Para Evitar la Ceguera en México Hospital Dr. Luis Sánchez Bulnes (MX)
- Corresponding author
- Sakaguchi, Hirokazu
- Venue
- Journal of Artificial Organs
- Published
- 2009-09
- Volume
- 12
- Issue
- 3
- Pages
- 206-209
- ISSN
- 1434-7229 (ISSN-L)
- 1619-0904
- OpenAlex
- W2016651677
- Cited by
- 58
- References
- 20
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 4 · 2023: 4 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 5 · 2018: 5 · 2017: 1 · 2016: 2 · 2015: 3 · 2014: 4 · 2013: 3 · 2012: 1
- FWCI
- 1.80
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Journal of Artificial Organs (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
- Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
- Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
- Keywords
- artificial vision, retinitis pigmentosa, visual prosthesis, phosphenes, electrical stimulation, blind patients, visual perception
- MeSH terms
- Adult, Blindness, Electric Stimulation, Electrodes, Implanted, Feasibility Studies, Female, Humans, Optic Nerve, Retinitis Pigmentosa, Visual Perception, Prosthesis Implantation
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