The thousand-yard stare (also referred to as two-thousand-yard stare) is the blank, unfocused gaze of people experiencing dissociation due to acute stress or traumatic events. It was originally used about war combatants and the post-traumatic stress they exhibited but is now also used to refer to an unfocused gaze observed in people under a stressful situation, or in people with certain mental health conditions.[1]
The thousand-yard stare is sometimes described as an effect of shell shock or combat stress reaction, along with other mental health conditions. However, it is not a formal medical term.[1][2][3]