out of the corner of your eye

out (of) the corner of (one's) eye

Of something seen, in one's periphery; partially and/or fleetingly, as opposed to fully and for an extended amount of time. Out the corner of my eye, I saw something moving in the bushes, and it turned out to be a stray cat. Sarah caught Tommy kissing Jessica out of the corner of her eye.
See also: corner, eye, of, out
Farlex Dictionary of Idioms.

out of the corner of your ˈeye

at the edge of your vision; indirectly: I just caught sight of him out of the corner of my eye, so I couldn’t say exactly what he looked like.
See also: corner, eye, of, out
Farlex Partner Idioms Dictionary
See also:
  • out (of) the corner of (one's) eye
  • out of the corner of eye
  • out of the corner of one's eye
  • from the corner of (one's) eye
  • like water off a duck's back
  • on the fringe
  • at (one's) doorstep
  • wet around the edges
  • moist around the edges
  • yes and no