trompe l’oeil (type of optical illusion)

for free, for nothing / by sight

(colloquial) loud, garish, in-your-face

(colloquial) to get an eyeful

to the naked eye, with the naked eye, on sight

(transitive with à) (informal) (of a person) to catch someone's eye, to strike someone's fancy, to appeal to someone

(transitive) to keep an eye on, to keep tabs on

(transitive) to keep an eye on, to keep tabs on

(figuratively) to pass out, to keel over, to faint

(simile) fit as a fiddle, in fine fettle, fresh as a daisy