The phrase "to trick the eye" means to create an optical illusion or deceive someone's vision by making something appear different than it actually is.
Sentences with «to trick the eye»
I was impressed by how the pattern really tricks the eye into narrowing the torso and draws up towards the neckline. (effortlesslywithroxy.com)
You're better off with a medium - height heel which tricks the eye into making your legs look longer and leaner. (fabulousafter40.com)
It's a mean trick your eyes play on you. (health.com)