expression
distant look; faraway look
Describes a gaze that seems to be looking into the distance, often while lost in thought or reminiscing.
彼は遠い目をして、昔のことを思い出していた。
He had a distant look in his eyes, remembering the old days.
窓の外を見ながら、遠い目で物思いにふける。
Gazing out the window, she was lost in thought with a faraway look.