Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Free
Faster access than browser!
 

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. [1]

77 relations: Albumin, Ancient Greek, Anterior chamber of eyeball, Aqueous humour, Blood, Blood vessel, Bowman's membrane, Cell (biology), Contact lens, Corneal abrasion, Corneal dystrophy, Corneal endothelium, Corneal epithelium, Corneal keratocyte, Corneal limbus, Corneal neovascularization, Corneal pachymetry, Corneal reflex, Corneal tattooing, Corneal topography, Corneal transplantation, Corneal ulcer, Cuboid, Curvature, Descemet's membrane, Diffusion, Dioptre, Dua's layer, Encyclopædia Britannica, Endothelium, Epithelium, Excimer laser, Eye, Eye disease, Eyelid, Fuchs' dystrophy, Human, Human eye, Immune privilege, Iris (anatomy), Keratitis, Keratoconus, Krukenberg's spindle, Laminin, Lamprey, LASIK, Lens (anatomy), Lens (optics), List of keratins expressed in the human integumentary system, Logarithmic spiral, ..., Long ciliary nerves, Lymph, Micrometre, Misnomer, Myelin, Nerve, Neurotrophin, Nidogen, Ophthalmic nerve, Optical power, Orthokeratology, Perlecan, Primate, Pulp (tooth), Pupil, Reflex, Refraction, Refractive index, Refractive surgery, Retina, Sclera, Stem cell, Stroma of cornea, Tears, Transparency and translucency, Trigeminal nerve, Visual system. Expand index (27 more) »

Albumin

The albumins (formed from Latin: albumen "(egg) white; dried egg white") are a family of globular proteins, the most common of which are the serum albumins.

New!!: Cornea and Albumin · See more »

Ancient Greek

The Ancient Greek language includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD.

New!!: Cornea and Ancient Greek · See more »

Anterior chamber of eyeball

The anterior chamber (AC) is the fluid-filled space inside the eye between the iris and the cornea's innermost surface, the endothelium.

New!!: Cornea and Anterior chamber of eyeball · See more »

Aqueous humour

The aqueous humour is a transparent, watery fluid similar to plasma, but containing low protein concentrations.

New!!: Cornea and Aqueous humour · See more »

Blood

Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.

New!!: Cornea and Blood · See more »

Blood vessel

The blood vessels are the part of the circulatory system, and microcirculation, that transports blood throughout the human body.

New!!: Cornea and Blood vessel · See more »

Bowman's membrane

The Bowman's membrane (Bowman's layer, anterior limiting lamina, anterior elastic lamina) is a smooth, acellular, nonregenerating layer, located between the superficial epithelium and the stroma in the cornea of the eye.

New!!: Cornea and Bowman's membrane · See more »

Cell (biology)

The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known living organisms.

New!!: Cornea and Cell (biology) · See more »

Christmas

Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.

New!!: Cornea and Christmas · See more »

Christmas and holiday season

The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.

New!!: Cornea and Christmas and holiday season · See more »

Christmas Eve

Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.

New!!: Cornea and Christmas Eve · See more »

Christmas traditions

Christmas traditions vary from country to country.

New!!: Cornea and Christmas traditions · See more »

Contact lens

A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye.

New!!: Cornea and Contact lens · See more »

Corneal abrasion

Corneal abrasion is a scratch to the surface of the cornea of the eye.

New!!: Cornea and Corneal abrasion · See more »

Corneal dystrophy

Corneal dystrophy is a group of rare hereditary disorders characterised by bilateral abnormal deposition of substances in the transparent front part of the eye called the cornea.

New!!: Cornea and Corneal dystrophy · See more »

Corneal endothelium

The corneal endothelium is a single layer of cells on the inner surface of the cornea.

New!!: Cornea and Corneal endothelium · See more »

Corneal epithelium

The corneal epithelium (epithelium corneæ anterior layer) is made up of epithelial tissue and covers the front of the cornea.

New!!: Cornea and Corneal epithelium · See more »

Corneal keratocyte

Corneal keratocytes (corneal fibroblasts) are specialized fibroblasts residing in the stroma.

New!!: Cornea and Corneal keratocyte · See more »

Corneal limbus

The corneal limbus is the border of the cornea and the sclera (the white of the eye).

New!!: Cornea and Corneal limbus · See more »

Corneal neovascularization

Corneal neovascularization (CNV) is the in-growth of new blood vessels from the pericorneal plexus into avascular corneal tissue as a result of oxygen deprivation.

New!!: Cornea and Corneal neovascularization · See more »

Corneal pachymetry

Corneal pachymetry is the process of measuring the thickness of the cornea.

New!!: Cornea and Corneal pachymetry · See more »

Corneal reflex

The corneal reflex, also known as the blink reflex, is an involuntary blinking of the eyelids elicited by stimulation of the cornea (such as by touching or by a foreign body), though could result from any peripheral stimulus.

New!!: Cornea and Corneal reflex · See more »

Corneal tattooing

Corneal tattooing is the practice of tattooing the cornea of the human eye.

New!!: Cornea and Corneal tattooing · See more »

Corneal topography

Corneal topography, also known as photokeratoscopy or videokeratography, is a non-invasive medical imaging technique for mapping the surface curvature of the cornea, the outer structure of the eye.

New!!: Cornea and Corneal topography · See more »

Corneal transplantation

Corneal transplantation, also known as corneal grafting, is a surgical procedure where a damaged or diseased cornea is replaced by donated corneal tissue (the graft).

New!!: Cornea and Corneal transplantation · See more »

Corneal ulcer

Corneal ulcer, or ulcerative keratitis, is an inflammatory or more seriously, infective condition of the cornea involving disruption of its epithelial layer with involvement of the corneal stroma.

New!!: Cornea and Corneal ulcer · See more »

Cuboid

In geometry, a cuboid is a convex polyhedron bounded by six quadrilateral faces, whose polyhedral graph is the same as that of a cube.

New!!: Cornea and Cuboid · See more »

Curvature

In mathematics, curvature is any of a number of loosely related concepts in different areas of geometry.

New!!: Cornea and Curvature · See more »

Descemet's membrane

Descemet's membrane (or the Descemet membrane) is the basement membrane that lies between the corneal proper substance, also called stroma, and the endothelial layer of the cornea.

New!!: Cornea and Descemet's membrane · See more »

Diffusion

Diffusion is the net movement of molecules or atoms from a region of high concentration (or high chemical potential) to a region of low concentration (or low chemical potential) as a result of random motion of the molecules or atoms.

New!!: Cornea and Diffusion · See more »

Dioptre

A dioptre (British spelling) or diopter (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres.

New!!: Cornea and Dioptre · See more »

Dua's layer

Dua's layer, according to a 2013 paper by Harminder Singh Dua's group at the University of Nottingham, is a layer of the cornea that had not been detected previously.

New!!: Cornea and Dua's layer · See more »

Encyclopædia Britannica

The Encyclopædia Britannica (Latin for "British Encyclopaedia"), published by Encyclopædia Britannica, Inc., is a general knowledge English-language encyclopaedia.

New!!: Cornea and Encyclopædia Britannica · See more »

Endothelium

Endothelium refers to cells that line the interior surface of blood vessels and lymphatic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall.

New!!: Cornea and Endothelium · See more »

Epithelium

Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue.

New!!: Cornea and Epithelium · See more »

Excimer laser

An excimer laser, sometimes more correctly called an exciplex laser, is a form of ultraviolet laser which is commonly used in the production of microelectronic devices, semiconductor based integrated circuits or "chips", eye surgery, and micromachining.

New!!: Cornea and Excimer laser · See more »

Eye

Eyes are organs of the visual system.

New!!: Cornea and Eye · See more »

Eye disease

This is a partial list of human eye diseases and disorders.

New!!: Cornea and Eye disease · See more »

Eyelid

An eyelid is a thin fold of skin that covers and protects the human eye.

New!!: Cornea and Eyelid · See more »

Fuchs' dystrophy

Fuchs' dystrophy, also referred to as Fuchs' corneal endothelial dystrophy (FCED) and Fuchs' endothelial dystrophy (FED), is a slowly progressing corneal dystrophy that usually affects both eyes and is slightly more common in women than in men.

New!!: Cornea and Fuchs' dystrophy · See more »

Human

Humans (taxonomically Homo sapiens) are the only extant members of the subtribe Hominina.

New!!: Cornea and Human · See more »

Human eye

The human eye is an organ which reacts to light and pressure.

New!!: Cornea and Human eye · See more »

Immune privilege

Certain sites of the human body have immune privilege, meaning they are able to tolerate the introduction of antigens without eliciting an inflammatory immune response.

New!!: Cornea and Immune privilege · See more »

Iris (anatomy)

In humans and most mammals and birds, the iris (plural: irides or irises) is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.

New!!: Cornea and Iris (anatomy) · See more »

Keratitis

Keratitis is a condition in which the eye's cornea, the clear dome on the front surface of the eye, becomes inflamed.

New!!: Cornea and Keratitis · See more »

Keratoconus

Keratoconus (KC) is a disorder of the eye which results in progressive thinning of the cornea.

New!!: Cornea and Keratoconus · See more »

Krukenberg's spindle

Krukenberg's spindle is the name given to the pattern formed on the inner surface of the cornea by pigmented iris cells that are shed during the mechanical rubbing of posterior pigment layer of the iris with the zonular fibrils that are deposited as a result of the currents of the aqueous humor.

New!!: Cornea and Krukenberg's spindle · See more »

Laminin

Laminins are high-molecular weight (~400 to ~900 kDa) proteins of the extracellular matrix.

New!!: Cornea and Laminin · See more »

Lamprey

Lampreys (sometimes also called, inaccurately, lamprey eels) are an ancient lineage of jawless fish of the order Petromyzontiformes, placed in the superclass Cyclostomata.

New!!: Cornea and Lamprey · See more »

LASIK

LASIK or Lasik (laser-assisted in situ keratomileusis), commonly referred to as laser eye surgery or laser vision correction, is a type of refractive surgery for the correction of myopia, hyperopia, and astigmatism.

New!!: Cornea and LASIK · See more »

Lens (anatomy)

The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.

New!!: Cornea and Lens (anatomy) · See more »

Lens (optics)

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.

New!!: Cornea and Lens (optics) · See more »

List of keratins expressed in the human integumentary system

There are many different keratin proteins normally expressed in the human integumentary system.

New!!: Cornea and List of keratins expressed in the human integumentary system · See more »

Logarithmic spiral

A logarithmic spiral, equiangular spiral or growth spiral is a self-similar spiral curve which often appears in nature.

New!!: Cornea and Logarithmic spiral · See more »

Long ciliary nerves

The long ciliary nerves, two or three in number, are given off from the nasociliary nerve as it crosses the optic nerve.

New!!: Cornea and Long ciliary nerves · See more »

Lymph

Lymph is the fluid that circulates throughout the lymphatic system.

New!!: Cornea and Lymph · See more »

Micrometre

The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".

New!!: Cornea and Micrometre · See more »

Misnomer

A misnomer is a name or term that suggests an idea that is known to be wrong.

New!!: Cornea and Misnomer · See more »

Myelin

Myelin is a lipid-rich substance that surrounds the axon of some nerve cells, forming an electrically insulating layer.

New!!: Cornea and Myelin · See more »

Nerve

A nerve is an enclosed, cable-like bundle of axons (nerve fibers, the long and slender projections of neurons) in the peripheral nervous system.

New!!: Cornea and Nerve · See more »

Neurotrophin

Neurotrophins are a family of proteins that induce the survival, development, and function of neurons.

New!!: Cornea and Neurotrophin · See more »

New Year

New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.

New!!: Cornea and New Year · See more »

New Year's Day

New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.

New!!: Cornea and New Year's Day · See more »

New Year's Eve

In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.

New!!: Cornea and New Year's Eve · See more »

Nidogen

Nidogens, formerly known as entactins, are a family of sulfated monomeric glycoproteins located in the basal lamina.

New!!: Cornea and Nidogen · See more »

Ophthalmic nerve

The ophthalmic nerve (first division of fifth cranial nerve, ophthalmic division of trigeminal nerve, first division of trigeminal nerve, CN V1, latin: nervus ophthalmicus) is the first branch of the trigeminal nerve.

New!!: Cornea and Ophthalmic nerve · See more »

Optical power

Optical power (also referred to as dioptric power, refractive power, focusing power, or convergence power) is the degree to which a lens, mirror, or other optical system converges or diverges light.

New!!: Cornea and Optical power · See more »

Orthokeratology

Orthokeratology (also referred to as Ortho-K, Overnight Vision Correction, Corneal Refractive Therapy and CRT), refers to the creation of gas permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia, hyperopia and astigmatism.

New!!: Cornea and Orthokeratology · See more »

Perlecan

Perlecan (PLC) also known as basement membrane-specific heparan sulfate proteoglycan core protein (HSPG) or heparan sulfate proteoglycan 2 (HSPG2), is a protein that in humans is encoded by the HSPG2 gene.

New!!: Cornea and Perlecan · See more »

Primate

A primate is a mammal of the order Primates (Latin: "prime, first rank").

New!!: Cornea and Primate · See more »

Pulp (tooth)

The pulp, or endodontium, is the part in the center of a tooth made up of living connective tissue and cells called odontoblasts.

New!!: Cornea and Pulp (tooth) · See more »

Pupil

The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina.

New!!: Cornea and Pupil · See more »

Reflex

A reflex, or reflex action, is an involuntary and nearly instantaneous movement in response to a stimulus.

New!!: Cornea and Reflex · See more »

Refraction

Refraction is the change in direction of wave propagation due to a change in its transmission medium.

New!!: Cornea and Refraction · See more »

Refractive index

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.

New!!: Cornea and Refractive index · See more »

Refractive surgery

Refractive eye surgery is any eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses.

New!!: Cornea and Refractive surgery · See more »

Retina

The retina is the innermost, light-sensitive "coat", or layer, of shell tissue of the eye of most vertebrates and some molluscs.

New!!: Cornea and Retina · See more »

Sclera

The sclera, also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the human eye containing mainly collagen and some elastic fiber.

New!!: Cornea and Sclera · See more »

Stem cell

Stem cells are biological cells that can differentiate into other types of cells and can divide to produce more of the same type of stem cells.

New!!: Cornea and Stem cell · See more »

Stroma of cornea

The substantia propria (or stroma of cornea) is fibrous, tough, unyielding, and perfectly transparent.

New!!: Cornea and Stroma of cornea · See more »

Tears

Tearing, lacrimation, or lachrymation is the secretion of tears, which often serves to clean and lubricate the eyes in response to an irritation of the eyes.

New!!: Cornea and Tears · See more »

Transparency and translucency

In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without being scattered.

New!!: Cornea and Transparency and translucency · See more »

Trigeminal nerve

The trigeminal nerve (the fifth cranial nerve, or simply CN V) is a nerve responsible for sensation in the face and motor functions such as biting and chewing; it is the largest of the cranial nerves.

New!!: Cornea and Trigeminal nerve · See more »

Visual system

The visual system is the part of the central nervous system which gives organisms the ability to process visual detail, as well as enabling the formation of several non-image photo response functions.

New!!: Cornea and Visual system · See more »

2018

2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.

New!!: Cornea and 2018 · See more »

2019

2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.

New!!: Cornea and 2019 · See more »

Redirects here:

Corneal, Corneal deposits, Corneal disease, Corneal diseases.

References

[1] https://en.wikipedia.org/wiki/Cornea

OutgoingIncoming
Hey! We are on Facebook now! »