Dual unit visual intraocular prosthesis

Wentai Liu, Elliot McGucken, Kasin Vitchiechom, Mark Clements, Eugene de Juan, Mark Humayun

Research output: Contribution to journalConference articlepeer-review

20 Citations (Scopus)


The development of an implantible Artificial Retina Chipset (ARC) is presented, and our current design, comprised of the Dual Unit Visual Intraocular Prosthesis, is described. This device will enable the over 10,000,000 people afflicted by retinal diseases such as retinal pigmentosa (RP) and age-related macular degeneration (AMD) to regain the sense of sight. This technology takes advantage of the fact that although these retinal diseases render the rods and cones inoperative, the ganglion cells lining the retina remain intact, and can respond to electrical stimulation. The ARC consists of a photosensing, processing, and stimulus-driving chip powered by solar cells which is connected to an electrode array. A photosensing, processing, and stimulus-driving chip has been fabricated and tested, and the chip performs in accordance with design specifications and biological parameters. The chip is capable of delivering the requisite currents for retinal stimulation in humans, as were determined by clinical studies conducted on the visually impaired with RP and AMD.

Original languageEnglish
Pages (from-to)2303-2306
Number of pages4
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Publication statusPublished - 1997
EventProceedings of the 1997 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Chicago, IL, USA
Duration: 1997 Oct 301997 Nov 2

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics


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