角膜上皮
WordNet
- membranous tissue covering internal organs and other internal surfaces of the body (同)epithelial_tissue
- the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera
PrepTutorEJDIC
- 上皮[組織](生物体の表皮・血管内壁など)
- (眼球の)角膜
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/01/31 20:48:40」(JST)
[Wiki en表示]
| Corneal epithelium |
Vertical section of human cornea from near the margin. (Waldeyer.) Magnified.
1. Epithelium.
2. Anterior elastic lamina.
3. substantia propria.
4. Posterior elastic lamina.
5. Endothelium of the anterior chamber.
a. Oblique fibers in the anterior layer of the substantia propria.
b. Lamellæ the fibers of which are cut across, producing a dotted appearance.
c. Corneal corpuscles appearing fusiform in section.
d. Lamellæ the fibers of which are cut longitudinally.
e. Transition to the sclera, with more distinct fibrillation, and surmounted by a thicker epithelium.
f. Small blood vessels cut across near the margin of the cornea. |
| Details |
| Latin |
Epithelium anterius corneae |
| Identifiers |
| Gray's |
p.1007 |
| MeSH |
A09.371.060.217.325 |
Dorlands
/Elsevier |
e_13/12339086 |
| TA |
A15.2.02.018 |
| FMA |
58263 |
| Anatomical terminology |
The corneal epithelium (epithelium corneæ anterior layer) is made up of epithelial tissue and covers the front of the cornea. It acts as a barrier to protect the cornea, resisting the free flow of fluids from the tears, and prevents bacteria from entering the epithelium and corneal stroma.
The corneal epithelium consists of several layers of cells. The cells of the deepest layer are columnar, known as basal cells. Then follow two or three layers of polyhedral cells, commonly known as wing cells. The majority of these are prickle cells, similar to those found in the stratum mucosum of the cuticle. Lastly, there are three or four layers of squamous cells, with flattened nuclei. The layers of the epithelium are constantly undergoing mitosis. Basal and wing cells migrate to the anterior of the cornea, while squamous cells age and slough off into the tear film.
Contents
- 1 Cornea cell LASIK complication
- 2 See also
- 3 Disorders
- 4 External links
Cornea cell LASIK complication
Epithelial ingrowth is a LASIK complication in which cells from the cornea surface layer (epithelial cells) begin to grow underneath the corneal flap. Epithelial ingrowth is a rarely occurring LASIK complication, appearing in less than one percent of LASIK procedures.[citation needed] However, the incidence of epithelial ingrowth appears to be higher after subsequent enhancement LASIK procedures.[citation needed] This complication is not present in PRK or other non-flap vision correction procedures.
See also
- Stratified squamous epithelium
Disorders
- Recurrent corneal erosion
External links
- Epithelium Ingrowth After LASIK
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Anatomy of the globe of the eye
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|
| Fibrous tunic (outer) |
| Sclera |
- Episcleral layer
- Schlemm's canal
- Trabecular meshwork
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| Cornea |
- Limbus
- layers
- Epithelium
- Bowman's
- Stroma
- Descemet's
- Endothelium
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| Uvea/vascular tunic (middle) |
| Choroid |
- Capillary lamina of choroid
- Bruch's membrane
- Sattler's layer
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| Ciliary body |
- Ciliary processes
- Ciliary muscle
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| Iris |
- Stroma
- Pupil
- Iris dilator muscle
- Iris sphincter muscle
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|
|
| Retina (inner) |
| Layers |
- Inner limiting membrane
- Nerve fiber layer
- Ganglion cell layer
- Inner plexiform layer
- Inner nuclear layer
- Outer plexiform layer
- Outer nuclear layer
- External limiting membrane
- Layer of rods and cones
- Retinal pigment epithelium
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| Cells |
Photoreceptor cells (Cone cell, Rod cell) → (Horizontal cell) → Bipolar cell → (Amacrine cell) → Retina ganglion cell (Midget cell, Parasol cell, Bistratified cell, Giant retina ganglion cells, Photosensitive ganglion cell) → Diencephalon: P cell, M cell, K cell, Muller glia
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| Other |
- Macula
- Foveola
- Fovea centralis
- Parafovea
- Perifovea
- Optic disc
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|
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| Anterior segment |
- Anterior chamber
- Aqueous humour
- Posterior chamber
- Lens
- Capsule of lens
- Zonule of Zinn
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| Posterior segment |
|
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| Other |
- Asthenopia
- Keratocytes
- Ocular immune system
- Tapetum lucidum
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|
|
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| Description |
- Anatomy
- bones
- muscles
- organs
- neural pathways
- Physiology
- Development
|
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| Disease |
- Congenital
- Neoplasms and cancer
- Other
- Symptoms and signs
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| Treatment |
- Procedures
- Drugs
- infection
- glaucoma and miosis
- mydriatics
- vascular
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|
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Epithelial tissue
|
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| Cells |
- Columnar
- Cuboidal
- Squamous
|
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| Types |
- Simple squamous epithelium
- Simple cuboidal epithelium
- Simple columnar epithelium
- Pseudostratified columnar epithelium
- Stratified squamous epithelium
- Stratified cuboidal epithelium
- Stratified columnar epithelium
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| Glandular |
| Classification |
| Mechanism |
- Merocrine
- Apocrine
- Holocrine
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| Shape |
- Tubular gland
- Alveolar gland
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| Secretion |
- Serous glands
- Mucous glands
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|
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| Components |
- Myoepithelial cell
- Serous demilune
- Ducts:
- Interlobar
- Interlobular
- Intralobular
- Striated
- Intercalated
- Acinus/Lobe
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|
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- See also
- Template:Epithelial neoplasms
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UpToDate Contents
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English Journal
- Development of a mouse model for sulfur mustard-induced ocular injury and long-term clinical analysis of injury progression.
- Ruff AL, Jarecke AJ, Hilber DJ, Rothwell CC, Beach SL, Dillman JF 3rd.SourceUSAMRICD, Cellular and Molecular Biology, Gunpowder 21010, USA. albert.leonard.ruff@us.army.mil
- Cutaneous and ocular toxicology.Cutan Ocul Toxicol.2013 Jun;32(2):140-9. doi: 10.3109/15569527.2012.731666. Epub 2012 Oct 30.
- CONTEXT: Sulfur mustard (SM) is a highly reactive vesicating agent that can induce severe ocular injury. The clinical features of this injury have been well documented, but the molecular basis for this pathology is not well understood. Identification and validation of specific targets is necessary i
- PMID 23106216
- Transcriptional regulators of the ΔNp63: Their role in limbal epithelial cell proliferation.
- Hsueh YJ, Kuo PC, Chen JK.SourceDepartment of Physiology, Chang Gung University College of Medicine, Taoyuan, Taiwan.
- Journal of cellular physiology.J Cell Physiol.2013 Mar;228(3):536-46. doi: 10.1002/jcp.24160.
- The surface cells of corneal epithelium are regularly shed off and replaced by new cells that are derived from limbal epithelial stem cells (LESC). LESC are believed to reside in the basal layer of the limbal epithelium and are characterized with high expression levels of ΔNp63, a transcription fac
- PMID 22806179
- In vivo confocal microscopy in diagnosis of limbal stem cell deficiency.
- Nubile M, Lanzini M, Miri A, Pocobelli A, Calienno R, Curcio C, Mastropasqua R, Dua HS, Mastropasqua L.SourceDepartment of Medicine and Ageing Sciences, Ophthalmology Clinic, University "G. D'Annunzio" of Chieti and Pescara, Chieti, Italy. Electronic address: m.nubile@unich.it.
- American journal of ophthalmology.Am J Ophthalmol.2013 Feb;155(2):220-32. doi: 10.1016/j.ajo.2012.08.017. Epub 2012 Nov 3.
- PURPOSE: To correlate in vivo confocal microscopy and impression cytology features of the corneal surface epithelia in patients with clinical features of partial or total limbal stem cell deficiency and to examine the limbal morphology.DESIGN: Prospective case-control observational study.METHODS: T
- PMID 23127748
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- 英
- corneal epithelium
- ラ
- epithelium anterius corneae
- 関
- 角膜