Eye-line Matching
1. A term used to point to the continuity editing practice ensuring the logic of the look or gaze. In other words, eyeline matching is based on the belief in mainstream cinema that when a character looks into off-screen space the spectator expects to see what he or she is looking at. Thus there will be a cut to show what is being looked at: object, view, another character, etc. Eyeline then refers to the trajectory of the looking eye. The eyeline match creates order and meaning in cinematic space.
Source: Wikipedia