Journal article

The Appearance of Phosphenes Elicited Using a Suprachoroidal Retinal Prosthesis

Nicholas C Sinclair, Mohit N Shivdasani, Thushara Perera, Lisa N Gillespie, Hugh J McDermott, Lauren N Ayton, Peter J Blamey

Investigative Ophthalmology & Visual Science | ASSOC RESEARCH VISION OPHTHALMOLOGY INC | Published : 2016

Abstract

Purpose: Phosphenes are the fundamental building blocks for presenting meaningful visual information to the visually impaired using a bionic eye device. The aim of this study was to characterize the size, shape, and location of phosphenes elicited using a suprachoroidal retinal prosthesis. Methods: Three patients with profound vision loss due to retinitis pigmentosa were implanted with a suprachoroidal electrode array, which was used to deliver charge-balanced biphasic constant-current pulses at various rates, amplitudes, and durations to produce phosphenes. Tasks assessing phosphene appearance, location, overlap, and the patients' ability to recognize phosphenes were performed using a custo..

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Grants

Awarded by NHMRC Centre for Clinical Research Excellence Award


Funding Acknowledgements

Supported by the Australian Research Council through its Special Research Initiative in Bionic Vision Science and Technology awarded to Bionic Vision Australia and by the Bertalli Family Foundation to the Bionics Institute. The Bionics Institute and the Centre for Eye Research Australia (CERA) acknowledge the support received from the Victorian Government through its Operational Infrastructure Program. CERA is also supported by NHMRC Centre for Clinical Research Excellence Award No. 529923.