Eye
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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. It is part of an organism's visual system.
Compound eye of an Antarctic krill
Eye of a European bison
Human eye
The eyes of a mantis shrimp (here Odontodactylus scyllarus) are considered the most complex in the animal kingdom.
Lens (vertebrate anatomy)
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The lens, or crystalline lens, is a transparent biconvex structure in most land vertebrate eyes. Relatively long, thin fiber cells make up the majority of the lens. These cells vary in architecture an
Sheep eye lens para-formaldehyde fixed front view. Small lenses are about 1 cm in diameter. Small bumps at edge are remnants of suspensory ligaments.
Microscope image of lens cell types and capsule
Sheep lens capsule removed. Decapsulation leads to a nearly formless blob.
Eye lens micrographs and diagram of growth region of the capsule