[wswope]

Video has been done, and been around for a while, but IIRC the main barrier to long-term success has been the tendency of scar tissue to form around implanted electrodes (this is not my wheelhouse at all though, someone else can probably offer much more detail).

https://en.wikipedia.org/wiki/Visual_prosthesis

[KronisLV]

That's a pretty impressive technology, but isn't it primarily used on blind people, instead of someone who'd need to experience images/video by alternate means temporarily?

It's probably still a viable approach, it's just that care should be taken to not disrupt the functionality of one's eyes whilst adding the necessary implant, which may or may not be doable, depending on the method.

Of course, the point about scar tissue is also a valid one.

[rcxdude]

It's not exactly photorealistic. most of those in the linked article are <2000 (monochrome) pixels total. Better than totally blind, but still legally blind.

[niemandhier]

use transient gene therapy to mutate a light sensitive channel into the relevant neurons, guide an optical fiber to the area and trigger via light coupled into the fiber.That is as precise as we can make the targeting of the mutation, and does not cause scaring. Even if some of the vector goes where it is not supppsed to there is litte light inside a skull...

The biggest problem is neural rewiring as response to the unnatural stimulus and ethics comitees.