Contact lense stoppage

[Buckley11]

If a player a)loses a contact lense and game is stopped to try to find it or b)loses a contact lense and simply needs to put it back into his/eye, what is proper administration in regards to player remaining in the game, etc?

Is this handled with the "injured player" procedure, ie player must leave game or be "bought" back into the game with a timeout. If the player can put it back in his/her eye in a very brief period of time, can they simply stay in the game without any circumstances?

Is NCAA and NF similar on this?

Thanks