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Iris Perdue Et Retrouvée
Iris most often refers to: *Iris (anatomy), part of the eye *Iris (color), an ambiguous color term *Iris (mythology), a Greek goddess *Iris (plant), ''Iris'' (plant), a genus of flowering plants * Iris (given name), a feminine given name, and a list of people so named Iris or IRIS may also refer to: Arts and media Fictional entities * Iris (American Horror Story), Iris (''American Horror Story''), an ''American Horror Story: Hotel'' character * Iris (Fire Force), Iris (''Fire Force''), a character in the manga series ''Fire Force'' * Iris (Mega Man), Iris (''Mega Man''), a ''Mega Man X4'' character ** Iris, a List of characters in the Mega Man Battle Network series#Iris, ''Mega Man Battle Network'' character * Iris (Pokémon), Iris (''Pokémon'') ** Iris (Pokémon anime), Iris (''Pokémon'' anime) * Sorceress Iris, a ''Magicians of Xanth'' character * Iris, a kaiju character in ''Gamera 3: The Revenge of Iris'' * Iris, a ''LoliRock'' character * Iris, a ''Lufia II: Rise of the S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iris (anatomy)
The iris (: irides or irises) is a thin, annular structure in the eye in most mammals and birds that is responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm (optics), diaphragm. Eye color is defined by the iris. Etymology The word "iris" is derived from the Greek word for "rainbow", also Iris (mythology), its goddess plus messenger of the gods in the ''Iliad'', because of the many eye color, colours of this eye part. Structure The iris consists of two layers: the front pigmented Wikt:fibrovascular, fibrovascular layer known as a stroma of iris, stroma and, behind the stroma, pigmented epithelial cells. The stroma is connected to a sphincter muscle (sphincter pupillae), which contracts the pupil in a circular motion, and a set of dilator muscles (dilator pupillae), which pull the iris radially to enlarge the pupil, pulling it in folds. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
