Sclera
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The sclera, also known as the white of the eye or, in older literature, as the tunica albuginea oculi, is the opaque, fibrous, protective outer layer of the eye containing mainly collagen and some cru
Goat eye with relatively dark sclera and horizontal pupil
Cow eye with dark sclera
Rare whites in a western lowland gorilla
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.
Sclera
…sclera, also known as the white of the eye or, in older literature, as the tunica albuginea oculi, is the opaque, fibrous, protective outer layer of the eye containing mainly collagen and some crucial elastic fiber. In the development of the embryo, the sclera is derived from the neural crest. In children…
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.