Disclosed are devices and methods for the transfer of fluids and potentially toxic chemicals into the lens capsule by creating a closed system preventing the fluids from entering the anterior chamber of the eye and thus causing damage to other ocular structures.The invention comprises one or more fluid conduits which communicate with a plug which maybe inserted through the corneal incision and placed onto the anterior surface of the capsule around the capsulorhexis. The plug is adapted to seal against the anterior surface of the lens capsule.In preferred embodiments, the flow of fluids into and out of the plug (and therefore the capsule) are controlled from a separate fluid flow controller.