human eye

The human eye is the organ of sight in people, a roughly spherical structure that detects light and converts it to neural signals the brain interprets as vision.

The eye's components—cornea, iris, pupil, lens, retina—work together to focus images.

Figuratively, the human eye represents direct perception or aesthetic judgment: The human eye can detect subtle color differences that cameras miss.

To the human eye, the forgery was indistinguishable from the original.