n. a normal defense reflex, this is an observable upward-and-outward movement of the globes of the eyes when attempting to close them. It is a phenomenon observed in about 75% of all people, and it becomes more prominent in cases of Bell's palsy.

BELL'S PHENOMENON: "The Bell's phenomenon is most noticeable when someone with Bell's palsy tries to close their eye on that affected side."
Cite this page: N., Pam M.S., "BELL'S PHENOMENON," in, April 7, 2013, (accessed May 15, 2021).