In visual perception

Visual perception

Visual perception is the ability to interpret information and surroundings from the effects of visible light reaching the eye. The resulting perception is also known as eyesight, sight, or vision...

, the far point is the point at which an object must be placed along the optical axis for its image to be focused on the retina

Retina

The vertebrate retina is a light-sensitive tissue lining the inner surface of the eye. The optics of the eye create an image of the visual world on the retina, which serves much the same function as the film in a camera. Light striking the retina initiates a cascade of chemical and electrical...

 when the eye

Human eye

The human eye is an organ which reacts to light for several purposes. As a conscious sense organ, the eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth...

 is not accommodating

Accommodation reflex

The accommodation reflex is a reflex action of the eye, in response to focusing on a near object, then looking at distant object , comprising coordinated changes in vergence, lens shape and pupil size...

. It is sometimes described as the farthest point from the eye at which images are clear.

For an object to be imaged on the retina of an unaccommodated myopic eye it must be brought nearer until it occupies a position conjugate to the retina. This point is called the far point of the eye.
For hypermetropic eye, incident light must be already convergent towards behind the retina in order that,it may be brought to focus on the retina. So, in this case the far point is behind the eye.
For emmetropic eye, the far point is at infinity.