To follow or track a person or object with one's eyes; to watch with one's gaze.
子どもが公園で飛んでいく凧を目で追っていた。
The child was following the kite flying in the park with his eyes.
彼は舞台を歩く俳優の一挙手一投足を目で追っていた。
He followed every move of the actor walking on stage with his eyes.
窓の外を通る人々を目で追っていると時間を忘れてしまった。
I lost track of time while watching the people passing by outside the window.
カメラマンは被写体を目で追いながら位置を調整した。
The cameraman adjusted his position while keeping his eyes on the subject.