Trimorphodon biscutatus
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The western lyre snake is a mildly venomous colubrid snake native to Mexico and Guatemala.
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.