The clip with the eyeball sliced is from an old French surrealistic short movie, written and produced by Luis Buñuel and Salvador Dali, “Un Chien Andalou” (An Andalusian Dog) from 1929.

http://www.filmreference.com/Films-Ca-Chr/Un-Chien-Andalou.html

https://www.youtube.com/watch?v=JbBfHy2qNeA