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==Brillo ocular==
O '''Eyeshinebrillo ocular''' isé aun visibleefecto effectvisible ofcausado thepolo ''tapetum lucidum''. WhenAo lightbrillar shinesa intoluz thedentro eyedo ofollo andun animal havingque aten ''tapetum lucidum'', thea [[pupilpupila]] appearsparece to glowresplandecer. EyeshineEste canbrillo bepode seenverse inen manymoitos animalsanimais, intanto naturena andnatureza incoma en [[fotografía]]s feitas con [[Flash (photographyfotografía)|flash]] [[photograph]]s. InCon lowpouca lightluz, aunha hand-heldluz flashlightde isflash sufficientmanual toé producesuficiente eyeshinepara thatproducir isestes highlyollos visiblebrillantes tovisibles humanspara os umanos (despitemalia oura inferiornosa [[nightvisión visionnocturna]] inferior]); thisesta technique,técnica [[spotlighting]],de isiluminar usedaos byanimais naturalistsé andutilizada hunterspolos tonaturalistas searche forcazadores animalspara atbuscar nightanimais pola noite. EyeshineEste occursbrillo inocular apode wideter varietydiversas ofcores, [[color]]scomo including [[white]]branco, [[blue]]azul, [[green]]verde, [[yellow]]amarelo, [[pink]]rosa ande [[red]]vermello. HoweverPorén, sincecomo o brillo eyeshineocular leadspode toproducir [[iridescenceiridiscencia]], thea colorcor variesvaría slightlylixeiramente withsegundo theo angleángulo atde whichobservación ite isos seenminerais andque these mineralsatopen which make up the reflectiveno ''tapetum-lucidum'' crystals.
Aínda que moitos peixes poden presentar este brillo nos ollos, especialmente o ''[[Sander vitreus]]''; os ollos con brillo azul aparecen en moitos mamíferos, como [[cabalo]]s; os de brillo verde en [[gato]]s, [[can]]s, e [[mapache]]s; e os de brillo vermello en [[coiote]]s, [[roedor]]es, [[opóssum]]s e [[aves]].
White eyeshine occurs in many fish, especially [[walleye]]; blue eyeshine occurs in many mammals such as [[horse]]s; green eyeshine occurs in mammals such as [[cat]]s, [[dog]]s, and [[raccoon]]s; and red eyeshine occurs in [[coyote]], [[rodents]], [[opossum]]s and [[bird]]s.{{Citation needed|date=June 2009}}<!-- what about crocodiles? -->
[[ FileFicheiro:Black-Lab-3-months-old-puppy.jpg| thumbminiatura| AUn three-month-old blackcan Labrador puppynegro withde apparenttres eyemeses shinecon brillo ocular.]] ▼
A pesar de que o ''tapetum lucidum''' está presente en [[Strepsirrhini|algúns primates]], o ollo humano e o doutros primates non o ten. Porén, en humanos e animais, si poden ocorrer dous efectos que lembran os ollos brillantes, que son a ''[[leucocoria]]'' (ollos brancos, indicativos de anormalidades como [[catarata]]s, [[cancro]]s, e outros problemas) e o [[efecto de ollos vermellos]] nas fotografías.
▲[[File:Black-Lab-3-months-old-puppy.jpg|thumb|A three-month-old black Labrador puppy with apparent eye shine]]
Despite ''tapetum lucidum'''s being present in [[Strepsirrhini|some primates]], the human eye has none, hence no eyeshine. However, in humans and animals, two effects can occur that may resemble eyeshine: ''[[leukocoria]]'' (white shine, indicative of abnormalities including [[cataract]]s, [[cancer]]s, and other problems) and [[red-eye effect]].
===Gatos e cans de ollos azuis===
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