|What can bionic eyes see? Image: SPIE|
Regulatory approval for cortical visual prostheses is yet to be obtained. However, several groups report plans to conduct clinical trials in the near future, building upon the seminal clinical studies of Brindley and Dobelle. In this review, the authors discuss the general principles of visual prostheses employing electrical stimulation of the visual pathways, focusing on the retina and visual cortex as the two most extensively studied stimulation sites. They also discuss the surgical and functional outcomes reported to date for retinal and cortical prostheses, concluding with a brief discussion of novel developments in this field and an outlook for the future.
Lewis, P.M., Ayton, L.N., Guymer, R.H., Lowery, A.J., Blamey, P.J., Allen, P.J., Luu, C.D., Rosenfeld, J.V. Advances in implantable bionic devices for blindness: a review. ANZ Journal of Surgery, 2016, 86(9) pp.654-659.