It doesn't need to be perfect or even "good", anything would be useful. Even if he had a dozen or so random nerves form connections and supply signals to be br

It doesn't need to be perfect or even "good", anything would be useful. Even if he had a dozen or so random nerves form connections and supply signals to be brain, that'd still be massively useful compared to nothing, and the brain should be able to figure out how to use that to reconstruct limited depth perception that wouldn't be possible with just one eye. I've heard of crazy experiments done in the past, e.g. one where a blind subject was given effectively a braille device on their tongue fed from a camera, so effectively a very low resolution (it might have been 8x8), and the brain was able to start correlating the pressure signals from the tongue with "sight" and the recipient learned how to avoid obstacles using their new tongue sensor. I just googled it and came up with these links: https://www.scientificamerican.com/article/device-lets-blind-see-with-tongues/ https://www.scientificamerican.com/article/device-lets-blind... https://en.wikipedia.org/wiki/Brainport https://en.wikipedia.org/wiki/Brainport