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A typical prosthesis consists of an array of fine electrodes, each of which is designed to trigger a phosphene.

"Phosphenes are likely to be distributed unevenly in an individual's visual field, and differences in the surface of the brain also affect how surgeons place implants, which together result in a phosphene map unique to each patient," Associate Professor Wong said.

Published in the Journal of Neural Engineering, 'A novel simulation paradigm utilising MRI-derived phosphene maps for cortical prosthetic vision' presents a more realistic simulation for cortical prosthetic vision.

Sighted participants recruited for the study were asked to test and verify the phosphene maps based on visual acuity and object recognition.

Potential implant locations would then be identified, and the simulation developed in the Monash research would be used to plot phosphene maps.