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  2. Monocular vision - Wikipedia

    en.wikipedia.org/wiki/Monocular_vision

    The eyes of an animal with monocular vision are positioned on opposite sides of the animal's head, giving it the ability to see two objects at once. This is usually most commonly seen with prey animals, as the reason why their eyes are placed on either side of their head is to make it easier for them to look out for predators, which usually ...

  3. Simple eye in invertebrates - Wikipedia

    en.wikipedia.org/wiki/Simple_eye_in_invertebrates

    Spiders do not have compound eyes, but instead have several pairs of simple eyes with each pair adapted for a specific task or tasks. The principal and secondary eyes in spiders are arranged in four, or occasionally fewer, pairs. Only the principal eyes have moveable retinas. The secondary eyes have a reflector at the back of the eyes.

  4. Arthropod eye - Wikipedia

    en.wikipedia.org/wiki/Arthropod_eye

    In some groups of animals whose ancestors originally were dichoptic, the eyes of modern species may be crowded together in the median plane; examples include many of the Archaeognatha. In extreme cases such eyes may fuse, effectively into a single eye, as in some of the Copepoda, notably in the genus Cyclops.

  5. Evolution of the eye - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_the_eye

    Whether the eye evolved once or many times depends on the definition of an eye. All eyed animals share much of the genetic machinery for eye development. This suggests that the ancestor of eyed animals had some form of light-sensitive machinery – even if it was not a dedicated optical organ.

  6. List of one-eyed creatures in mythology and fiction - Wikipedia

    en.wikipedia.org/wiki/List_of_one-eyed_creatures...

    They had a single eye in the centre of the forehead. Balor, a giant in Irish mythology, with one eye in his forehead that would wreak destruction when opened; Bungisngis, one-eyed giants of Philippine folklore; Cyclopes (singular: Cyclops), one-eyed giants in Greek mythology, including Polyphemus. They had a single eye in the centre of their ...

  7. These 34 creatures were recently discovered as new species ...

    www.aol.com/news/34-creatures-were-recently...

    From 8-eyed spiders to a new species resembling a “miniature dragon.”

  8. Eye - Wikipedia

    en.wikipedia.org/wiki/Eye

    There are some exceptions from the types mentioned above. Some insects have a so-called single lens compound eye, a transitional type which is something between a superposition type of the multi-lens compound eye and the single lens eye found in animals with simple eyes. Then there is the mysid shrimp, Dioptromysis paucispinosa. The shrimp has ...

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