Diamond devices for high acuity prosthetic vision

Arman Ahnood, Hamish Meffin, David J Garrett, Kate Fox, Kumaravelu Ganesan, Alastair Stacey, Nicholas V Apollo, Yan Tat Wong, Samantha G. Lichter, William Kentler, Omid Kavehei, Ursula Greferath, Kirstan A Vessey, Michael R. Ibbotson, Erica L. Fletcher, Anthony N. Burkitt, Steven Prawer

Research output: Contribution to journalArticleResearchpeer-review

35 Citations (Scopus)


Retinal implants restore a sense of vision, for a growing number of users worldwide. Nevertheless, visual acuities provided by the current generation of devices are low. The quantity of information transferable to the retina using existing implant technologies is limited, far below receptor cells' capabilities. Many agree that increasing the information density deliverable by a retinal prosthesis requires devices with stimulation electrodes that are both dense and numerous. This work describes a new generation of retinal prostheses capable of upscaling the information density conveyable to the retina. Centered on engineered diamond materials, the implant is very well tolerated and long-term stable in the eye's unique physiological environment and capable of delivering highly versatile stimulation waveforms – both key attributes in providing useful vision. Delivery of high-density information, close to the retina with the flexibility to alter stimulation parameters in situ provides the best chance for success in providing high acuity prosthetic vision.
Original languageEnglish
Article number1600003
Number of pages10
JournalAdvanced Biosystems
Issue number1-2
Publication statusPublished - Feb 2017
Externally publishedYes

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