Search results
Results from the WOW.Com Content Network
Tarsiers are small animals with enormous eyes; each eyeball is approximately 16 millimetres (0.63 in) in diameter and is as large as, or in some cases larger than, its entire brain. [ 16 ] [ 17 ] The unique cranial anatomy of the tarsier results from the need to balance their large eyes and heavy head so they are able to wait silently for ...
The eye of a horse. The equine eye is one of the largest of any land mammal. [1] Its visual abilities are directly related to the animal's behavior; for example, it is active during both day and night, and it is a prey animal. Both the strengths and weaknesses of the horse's visual abilities should be taken into consideration when training the ...
The eye is 27 cm (10 + 1 ⁄ 2 in) wide, with a lens 12 cm (4 + 1 ⁄ 2 in) across. This is the largest eye of any known animal. [30] These measurements are of the partly collapsed specimen; alive, the eye was probably 30 [31] to 40 cm (12 to 16 in) across. [57] Inspection of the specimen with an endoscope revealed ovaries containing thousands ...
Instead, a special adaptation in the neck allows its round head to be rotated 180°. Their eyes are disproportionately large, having the largest eye-to-body weight ratio of all mammals. [12] These huge eyes provide this nocturnal animal with excellent night vision. [13] In bright light, the tarsier's eyes can constrict until the pupil appears ...
It also has the largest eyes of any living creature except perhaps the colossal squid—up to at least 27 cm (11 in) in diameter, with a 9 cm (3.5 in) pupil (only the extinct ichthyosaurs are known to have had larger eyes). [18] Large eyes can better detect light (including bioluminescent light), which is scarce in deep water. The giant squid ...
Diagram of a human eye; note that not all eyes have the same anatomy as a human eye. The mammalian eye can also be divided into two main segments: the anterior segment and the posterior segment. [10] The human eye is not a plain sphere but is like two spheres combined, a smaller, more sharply curved one and a larger lesser curved sphere.
Nocturnal animals (for example, tarsiers) and animals that live in open landscapes have larger eyes. The vision of forest animals is not so sharp, and in burrowing underground species (moles, gophers, zokors), eyes are reduced to a greater extent, in some cases (marsupial moles, mole rats, blind mole), they are even covered by a skin membrane.
Some sources state that the vampire squid (Vampyroteuthis infernalis) has the largest eyes of any animal relative to its size, with a 15 cm (5.9 in) specimen having eyes around 2.5 cm (0.98 in) in diameter. [171] Iridoteuthis iris is an extreme example of a sepiolid with disproportionately large eyes