Serious question: what will happen when people start getting implants? They’ll probably require some sort of off mode, but not sure how that would be enforced.
That's so far into the future that we can cross that bridge when we come to it.
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.