The Eyedrop that Makes you Unable to see / Eyes eat as well as Mouth

Doraemon · Episode 479 · “The Eyedrop that Makes you Unable to see / Eyes eat as well as Mouth”

Nobi Nobita is a 4th-grade boy in Tokyo. One day, a round, blue cat-style robot (minus ears) pops up in his desk drawer. Nobita's great-great-grandson (or something) lives in the 22nd Century, but thanks to Nobita's mistakes, the entire family is living in poverty. To rectify this, Nobita's...