Nana busied herself with checking all of her medical tools as she waited for the drugs to kick in, and when they finally did, she could tell. Motochika looked pretty out of it, and he had been quiet for some time. Moving over, she tested Motochika's consciousness before fully putting him under, and beginning his operation.
It took ten hours, but she removed the dead eye, and had put in the mechanical one, having to disconnect and reconnect each and every nerve, implant the eye and make sure it would function. Hooking him up to saline, she waited for him to come to. A cotton patch over his new eye until it had healed.