His eyes, focussed at no particular range, suddenly detected every line in the floor.

The eye would never have detected it - only the fingers.

Gleaming eyes detected that the men in the room were looking elsewhere.

"Electronic security has the eyes and ears to detect problems everywhere at all times."

Suddenly the vague light which my left eye had detected vanished.

His keen eyes had detected a movement on the skyline.

The president is in one, and only an experienced eye can detect which.

Yet eyes could not have detected them, and they made no sound.

The eye could not detect one creature in the group free from the smear of blood.

Only now, far across the room, Al's eye detects another figure entering.