The Eye Page: An exploration of eye structures in nature
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strange eyes


Binocularity
Senegalese cameleon Fishing cat Praying mantis Bittern
The senegalese chameleon, while capable of binocular focus, is also able to move its eyes independently to regard in different directions. Wild fishing cats have eyes that appear to look directly at the viewer.



It might surprise you that the praying mantis has binocular vision.



The bittern must raise its head toward the sky to see in front of it but it still has binocular vision.


Human, one eye focused outward
Human, one eye focused inward
Human, eyes misaligned vertically.
Human, eyes aligned
This human child has a right eye that is misaligned outward and does not have the benefit of binocular vision. This human child has a left eye that is misaligned inward and, thus, does not have binocularity.

This human adult has a left eye that is misaligned above, which results in a lack of binocularity.

Correctly aligned eyes in humans provides binocular (3-D) vision.


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