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Tapetum lucidum information


The dark blue, teal, and gold tapetum lucidum from the eye of a cow
Retina of a mongrel dog with strong tapetal reflex

The tapetum lucidum (Latin for 'bright tapestry, coverlet'; /təˈptəm ˈlsɪdəm/ tə-PEE-təm LOO-sih-dəm; pl.: tapeta lucida)[1] is a layer of tissue in the eye of many vertebrates and some other animals. Lying immediately behind the retina, it is a retroreflector. It reflects visible light back through the retina, increasing the light available to the photoreceptors (although slightly blurring the image). The tapetum lucidum contributes to the superior night vision of some animals. Many of these animals are nocturnal, especially carnivores, while others are deep sea animals.

Similar adaptations occur in some species of spiders.[2] Haplorhine primates, including humans, are diurnal and lack a tapetum lucidum.[Note 1]

  1. ^ "Latin Word Lookup". Archives.nd.edu. Retrieved 2014-03-20.
  2. ^ Ruppert, E. E.; Fox, R. S.; Barnes, R. D. (2004). "Chelicerata: Araneae". Invertebrate Zoology (7th ed.). Brooks/Cole. pp. 578–81. ISBN 978-0-03-025982-1.
  3. ^ Cite error: The named reference Ollivier+2004 was invoked but never defined (see the help page).


Cite error: There are <ref group=Note> tags on this page, but the references will not show without a {{reflist|group=Note}} template (see the help page).

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Tapetum lucidum

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The tapetum lucidum (Latin for 'bright tapestry, coverlet'; /təˈpiːtəm ˈluːsɪdəm/ tə-PEE-təm LOO-sih-dəm; pl.: tapeta lucida) is a layer of tissue in...

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Tapetum

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innermost wall of microsporangium Tapetum lucidum, a reflective tissue layer associated with the retina of some vertebrates Tapetum of corpus callosum, a section...

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Night vision

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cats, dogs, foxes and rabbits, in part because the human eye lacks a tapetum lucidum, tissue behind the retina that reflects light back through the retina...

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Strepsirrhini

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possess a reflective layer behind the retina of the eye, called a tapetum lucidum (consisting of riboflavin crystals), which improves vision in low light...

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Choroid

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whereas the controlled reflection of light from the tapetum lucidum produces eyeshine (see Tapetum lucidum). The choroid was first described by Democritus...

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Retroreflector

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lens and the cornea form the refractive converging system, while the tapetum lucidum behind the retina forms the spherical concave mirror. Because the function...

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Leukocoria

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also occur in animals that lack eyeshine because their retina lacks a tapetum lucidum. Leukocoria is a medical sign for a number of conditions, including...

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Wolf spider

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blind or have poor vision, wolf spiders have excellent eyesight. The tapetum lucidum is a retroreflective tissue found in eyes. This reflective tissue is...

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Cat senses

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evolved to allow cats to hunt effectively at dawn and dusk. Cats have a tapetum lucidum, which is a reflective layer behind the retina that sends light that...

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Animal reflectors

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photonic crystals. Examples are the scales of silvery fish, and the tapetum lucidum that causes the eyeshine of dogs and cats. All these reflectors work...

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Night monkey

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lack a tapetum lucidum, the reflective layer behind the retina possessed by many nocturnal animals. Other sources say they have a tapetum lucidum composed...

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Cat

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human vision.: 43  This is partly the result of cat eyes having a tapetum lucidum, which reflects any light that passes through the retina back into...

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Siamese cat

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produces coloured points means that Siamese cats' blue eyes lack a tapetum lucidum, a structure which amplifies dim light in the eyes of other cats. The...

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Equine vision

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pigment, and is almost entirely made of blood vessels. It forms the tapetum lucidum when it crosses over the fundus of the eye, causing the yellowish-green...

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Prosimian

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tarsiers, the nocturnal vision is further augmented by a reflective tapetum lucidum behind the retina, similar to that found in other nocturnal mammals...

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Posterior segment of eyeball

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diseases. In some animals, the retina contains a reflective layer (the tapetum lucidum) which increases the amount of light each photosensitive cell perceives...

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Retinal pigment epithelium

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humans); and as the tapetum nigrum, referring to the observation that in animals with a tapetum lucidum, in the region of the tapetum lucidum the RPE is not...

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Deinopidae

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owls, and are able to do this despite the lack of a reflective layer (tapetum lucidum); instead, each night, a large area of light-sensitive membrane is...

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Iridescence

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gecko, Cnemaspis kolhapurensis, was identified in India in 2009. The tapetum lucidum, present in the eyes of many vertebrates, is also iridescent. Iridescence...

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Elasmobranchii

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but are disconnected from the rest of the hyoid. The eyes have a tapetum lucidum. The inner margin of each pelvic fin in the male fish is grooved to...

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Argument from poor design

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avoid these problems. Lents and colleagues have proposed that the tapetum lucidum, the reflective surface behind vertebrate retinas, has evolved to overcome...

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Deep sea

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which combination they use to detect eyeshine in other fish (see tapetum lucidum). Organisms in the deep sea are almost entirely reliant upon sinking...

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Spider anatomy

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owls. This is despite the fact that they lack a reflective layer (tapetum lucidum); instead, each night, a large area of light-sensitive membrane is...

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vision. Their night vision is especially good due to the presence of a tapetum lucidum, which reflects light inside the eyeball, and gives felid eyes their...

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