Sclera


Sclera
The tough white outer coat over the eyeball that covers approximately the posterior five-sixths of its surface. The sclera is continuous in the front of the eye with the cornea and in the back of the eye with the external sheath of the optic nerve. The word "sclera" is from the Greek "skleros" = hard. The plural is sclerae.
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A portion of the fibrous layer forming the outer envelope of the eyeball, except for its anterior sixth, which is the cornea. SYN: sclerotic coat, sclerotica, tunica albuginea oculi, tunica sclerotica. [Mod. L. fr. G. skleros, hard]
- blue s. appearance of the uveal tissue through a thin s. seen in a number of conditions including myopia, buphthalmos, scleral staphyloma, Ehlers-Danlos syndrome, Marfan syndrome, osteogenesis imperfecta, Paget disease, and Pierre Robin syndrome.

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sclera 'skler-ə n the dense fibrous opaque white outer coat enclosing the eyeball except the part covered by the cornea called also sclerotic, sclerotic coat

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n.
the white fibrous outer layer of the eyeball. At the front of the eye it becomes the cornea. See eye.
scleral adj.

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scle·ra (sklērґə) gen. and pl. scleґrae [L., from Gr. skleros hard] [TA] the tough white outer coat of the eyeball, covering approximately the posterior five-sixths of its surface, and continuous anteriorly with the cornea and posteriorly with the external sheath of the optic nerve. scleral adj

Sclera.


Medical dictionary. 2011.

Look at other dictionaries:

  • scleră — scléră s. f., pl. sclére Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic  SCLÉRĂ s.f. (anat.) Tunica solidă a globului ocular. [< germ. Sklera]. Trimis de LauraGellner, 13.09.2007. Sursa: DN  SCLÉRĂ s. f …   Dicționar Român

  • Sclera — Sclera, die weiße Augenhaut (s. Tafel »Auge II«, mit Text) …   Meyers Großes Konversations-Lexikon

  • Sclera — Sclera, die harte Haut (s. Auge) …   Kleines Konversations-Lexikon

  • Sclera — Sclera, Lederhaut, harte Augenhaut, äußere Hüllschicht des ⇒ Einzellinsenauges der Wirbeltiere, die sich in seinem lichtseitigen vorderen Bereich in die Cornea fortsetzt …   Deutsch wörterbuch der biologie

  • sclera — / sklɛra/ s.f. [dal gr. sklērós duro ]. (anat.) [parte non trasparente della tunica esterna dell occhio] ▶◀ sclerotica …   Enciclopedia Italiana

  • Sclera — vgl. Sklera …   Das Wörterbuch medizinischer Fachausdrücke

  • sclera — Medical L., from Gk. sklera (menix) the hard (membrane), fem. of skleros hard (see SCLEROSIS (Cf. sclerosis)) …   Etymology dictionary

  • sclera — [sklir′ə] n. pl. scleras or sclerae [ModL < Gr sklēros, hard < IE base * (s)kel , to dry out > SHALLOW] the outer, tough, white, fibrous membrane covering all of the eyeball except the area covered by the cornea: see EYE scleral adj …   English World dictionary

  • Sclera — Infobox Anatomy Name = PAGENAME Latin = GraySubject = 225 GrayPage = 1006 Caption = Schematic diagram of the human eye. |yuck Caption2 = Width = 325 Precursor = System = Artery = anterior ciliary arteries, long posterior ciliary arteries, short… …   Wikipedia

  • Sclera — Anatomischer Aufbau des Auges. Sclera (Lederhaut) hellgelb. Sclera (von griech. skleros „hart“) ist der medizinische Fachausdruck für die Lederhaut des Auges. Aufgrund ihrer weißlichen Farbe wird sie auch „weiße Augenhaut“ genannt. Sie umschließt …   Deutsch Wikipedia


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