expression, ichidan verb
have dead eyes; look dead inside; have a blank expression
Describes a person whose eyes lack vitality, emotion, or focus, often due to exhaustion, boredom, or emotional numbness. Used idiomatically.
徹夜明けで、彼は目が死んでいた。
After pulling an all-nighter, his eyes looked dead.
During the boring meeting, everyone has a blank expression.