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Douglas Harper's Etymology Dictionary
four-eyes

"person who wears glasses," slang, 1874; see four + eye (n.).

Wiktionary
four-eyes

n. (context idiomatic derogatory English) A person who wears spectacles.

Usage examples of "four-eyes".

Then you grow up to a life of fatboys and four-eyes, bullies and bookworms, fudgers and smudgers.