You really need to look into what people are doing with prosthetic eyes.
Here's a dude from 3 years ago adding a flashlight: https://www.reddit.com/r/interestingasfuck/comments/yblzi4/g...
And I'm pretty sure I saw one who added a laser to theirs for raves, but can't find the link :)
You can buy very very tiny cameras today off the shelf, the main problem would be just packaging either a storage medium or wireless transfer capability + power inside the eye. With government-level budgets it's doable, possibly even by a skilled maker with resources.
AirPods knockoffs are mass-produced. They contain power and RF comms in a package that's significantly smaller than an eye. The only problem with prosthetic eye camera I as a half-skilled home-lab owner would have is how to not ruin the source prostetic. Which is trivial - just buy a dozen and practice.