The phrase "eagle eye" means having exceptionally sharp or keen eyesight, like that of an eagle, which allows one to notice even the smallest details or spot things from far away. Full definition
We watch over your assets with the same care and concern we would for our family and friends, and with the same eagle eye toward your unique situation. (puplava.com)
My makeup eagle eye, of course, caught it right away. (allure.com)