Systems design of a high resolution retinal prosthesis

James D. Weiland, Wolfgang Fink, Mark S. Humayun, Wentai Liu, Wen Li, Mohanasankar Sivaprakasam, Yu Chong Tai, Mark A. Tarbell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


Simulations of artificial vision suggest that 1000 electrodes may be required to restore vision to individuals with diseases of the outer retina. In order to achieve such an implant, new technology is needed, since the state-of-the-art implantable neural stimulator has at most 22 contacts with neural tissue. Considerable progress has been made towards that goal with the development of image processing, microelectronics, and polymer based MEMS. An image processing system has been realized that is capable of real-time implementation of image decimation and filtering (for example, edge detection). Application specific integrated circuits (ASICs) have been designed and tested to demonstrate closed loop power control and efficient microstimulation. A novel packaging process has been developed that is capable of simultaneously forming communication coils, interconnects, and stimulating electrodes.

Original languageEnglish (US)
Title of host publication2008 IEEE International Electron Devices Meeting, IEDM 2008
StatePublished - 2008
Event2008 IEEE International Electron Devices Meeting, IEDM 2008 - San Francisco, CA, United States
Duration: Dec 15 2008Dec 17 2008

Publication series

NameTechnical Digest - International Electron Devices Meeting, IEDM
ISSN (Print)0163-1918


Other2008 IEEE International Electron Devices Meeting, IEDM 2008
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry


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