eye surgery vs eye operation

eye surgery and eye operation both are nouns.

Word	Noun	Adjective	Verb	Adverb
eye surgery	Yes	No	No	No
eye operation	Yes	No	No	No

As nouns, eye surgery and eye operation are synonyms defined as:

eye surgery and eye operation: any surgical procedure involving the eyes

eye surgery (noun)	eye operation (noun)
any surgical procedure involving the eyes	any surgical procedure involving the eyes