"I got hungry eyes
One look at you and I can't disguise..."
—Eric Carmen

Eyes that seem dead and creepy, or otherwise look like there's no soul behind them. Blank glassy stares count.
Also known as "dead fish eyes" or "thousand yard stare" if you're familiar with those.

Related tags:

• blank_stare
• bulging_eyes
• empty_eyes
• no_pupils
• nightmare_fuel