Eye
Videos
Page
An eye is a sensory organ that allows an organism to perceive visual information. It detects light and converts it into electro-chemical impulses in neurons (neurones). It is part of an organism's visual system.
Compound eye of an Antarctic krill
Eye of a European bison
Human eye, a refractive cornea type eye.
The eyes of a mantis shrimp (here Odontodactylus scyllarus) are considered the most complex in the whole animal kingdom.
Visual system
Videos
Page
The visual system is the physiological basis of visual perception. The system detects, transduces and interprets information concerning light within the visible range to construct an image and build a mental model of the surrounding environment. The visual system is associated with the eye and functionally divided into the optical system and the neural system.
The eye is the sensory organ of the visual system. The iris, pupil, and sclera are visible
Representation of optic pathways from each of the 4 quadrants of view for both eyes simultaneously
S. Ramón y Cajal, Structure of the Mammalian Retina, 1900
Information flow from the eyes (top), crossing at the optic chiasma, joining left and right eye information in the optic tract, and layering left and right visual stimuli in the lateral geniculate nucleus. V1 in red at bottom of image. (1543 image from Andreas Vesalius' Fabrica)