We are working to restore the Unionpedia app on the Google Play Store
OutgoingIncoming
🌟We've simplified our design for better navigation!
Instagram Facebook X LinkedIn

Eye

Index Eye

An eye is a sensory organ that allows an organism to perceive visual information. [1]

Table of Contents

  1. 182 relations: Accommodation (vertebrate eye), Adaptation (eye), Adobe Flash, Africa, Amphibian, Amphipoda, Ancestor, Angular resolution, Annelid, Annual Review of Neuroscience, Antarctic krill, Aqueous humour, Aragonite, Arthropod, Binocular vision, BioScience, Bird of prey, Bivalvia, Black-and-white, Blind spot (vision), Box jellyfish, Brain, Brittle star, Brownsnout spookfish, Calcite, Cambrian explosion, Camera, Capsule of lens, Caterpillar, Cell (biology), Cephalopod, Cephalopod eye, Chiton, Circadian rhythm, Cnidaria, Color, Color vision, Compound eye, Cone cell, Copepod, Copilia, Cornea, Crayfish, Crustacean, Crystal, Crystallin, Darkness, Decapoda, Degree (angle), Depth perception, ... Expand index (132 more) »

  2. Sensory organs

Accommodation (vertebrate eye)

Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies.

See Eye and Accommodation (vertebrate eye)

Adaptation (eye)

In visual physiology, adaptation is the ability of the retina of the eye to adjust to various levels of light.

See Eye and Adaptation (eye)

Adobe Flash

Adobe Flash (formerly Macromedia Flash and FutureSplash) is a discontinuedexcept in China, where it continues to be used, as well as Harman for enterprise users.

See Eye and Adobe Flash

Africa

Africa is the world's second-largest and second-most populous continent after Asia.

See Eye and Africa

Amphibian

Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia.

See Eye and Amphibian

Amphipoda

Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies.

See Eye and Amphipoda

Ancestor

An ancestor, also known as a forefather, fore-elder, or a forebear, is a parent or (recursively) the parent of an antecedent (i.e., a grandparent, great-grandparent, great-great-grandparent and so forth).

See Eye and Ancestor

Angular resolution

Angular resolution describes the ability of any image-forming device such as an optical or radio telescope, a microscope, a camera, or an eye, to distinguish small details of an object, thereby making it a major determinant of image resolution.

See Eye and Angular resolution

Annelid

The annelids (Annelida, from Latin anellus, "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.

See Eye and Annelid

Annual Review of Neuroscience

The Annual Review of Neuroscience is a peer-reviewed academic journal that publishes review articles relevant to neuroscience.

See Eye and Annual Review of Neuroscience

Antarctic krill

Antarctic krill (Euphausia superba) is a species of krill found in the Antarctic waters of the Southern Ocean.

See Eye and Antarctic krill

Aqueous humour

The aqueous humour is a transparent water-like fluid similar to blood plasma, but containing low protein concentrations.

See Eye and Aqueous humour

Aragonite

Aragonite is a carbonate mineral and one of the three most common naturally occurring crystal forms of calcium carbonate, the others being calcite and vaterite.

See Eye and Aragonite

Arthropod

Arthropods are invertebrates in the phylum Arthropoda.

See Eye and Arthropod

Binocular vision

In biology, binocular vision is a type of vision in which an animal has two eyes capable of facing the same direction to perceive a single three-dimensional image of its surroundings.

See Eye and Binocular vision

BioScience

BioScience is a monthly peer-reviewed scientific journal that is published by Oxford University Press on behalf of the American Institute of Biological Sciences.

See Eye and BioScience

Bird of prey

Birds of prey or predatory birds, also known as raptors, are hypercarnivorous bird species that actively hunt and feed on other vertebrates (mainly mammals, reptiles and other smaller birds).

See Eye and Bird of prey

Bivalvia

Bivalvia, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts.

See Eye and Bivalvia

Black-and-white

Black-and-white (B&W or B/W) images combine black and white to produce a range of achromatic brightnesses of grey.

See Eye and Black-and-white

Blind spot (vision)

A blind spot, scotoma, is an obscuration of the visual field.

See Eye and Blind spot (vision)

Box jellyfish

Box jellyfish (class Cubozoa) are cnidarian invertebrates distinguished by their box-like (i.e. cube-shaped) body.

See Eye and Box jellyfish

Brain

The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals.

See Eye and Brain

Brittle star

Brittle stars, serpent stars, or ophiuroids (referring to the serpent-like arms of the brittle star) are echinoderms in the class Ophiuroidea, closely related to starfish.

See Eye and Brittle star

Brownsnout spookfish

The brownsnout spookfish or brown-snout spookfish (Dolichopteryx longipes) is a species of barreleye in the family Opisthoproctidae.

See Eye and Brownsnout spookfish

Calcite

Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3).

See Eye and Calcite

Cambrian explosion

The Cambrian explosion (also known as Cambrian radiation or Cambrian diversification) is an interval of time approximately in the Cambrian period of the early Paleozoic when a sudden radiation of complex life occurred, and practically all major animal phyla started appearing in the fossil record.

See Eye and Cambrian explosion

Camera

A camera is an instrument used to capture and store images and videos, either digitally via an electronic image sensor, or chemically via a light-sensitive material such as photographic film.

See Eye and Camera

Capsule of lens

The lens capsule is a component of the globe of the eye.

See Eye and Capsule of lens

Caterpillar

Caterpillars are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths).

See Eye and Caterpillar

Cell (biology)

The cell is the basic structural and functional unit of all forms of life.

See Eye and Cell (biology)

Cephalopod

A cephalopod is any member of the molluscan class Cephalopoda (Greek plural κεφαλόποδες,; "head-feet") such as a squid, octopus, cuttlefish, or nautilus.

See Eye and Cephalopod

Cephalopod eye

Cephalopods, as active marine predators, possess sensory organs specialized for use in aquatic conditions.

See Eye and Cephalopod eye

Chiton

Chitons are marine molluscs of varying size in the class Polyplacophora, formerly known as Amphineura.

See Eye and Chiton

Circadian rhythm

A circadian rhythm, or circadian cycle, is a natural oscillation that repeats roughly every 24 hours.

See Eye and Circadian rhythm

Cnidaria

Cnidaria is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in fresh water and marine environments (predominantly the latter), including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites.

See Eye and Cnidaria

Color

Color (American English) or colour (British and Commonwealth English) is the visual perception based on the electromagnetic spectrum.

See Eye and Color

Color vision

Color vision, a feature of visual perception, is an ability to perceive differences between light composed of different frequencies independently of light intensity. Eye and Color vision are visual system.

See Eye and Color vision

Compound eye

A compound eye is a visual organ found in arthropods such as insects and crustaceans.

See Eye and Compound eye

Cone cell

Cone cells or cones are photoreceptor cells in the retinas of vertebrates' eyes.

See Eye and Cone cell

Copepod

Copepods (meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat.

See Eye and Copepod

Copilia

Copilia is a genus of copepods in the family Sapphirinidae.

See Eye and Copilia

Cornea

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

See Eye and Cornea

Crayfish

Crayfish are freshwater crustaceans belonging to the infraorder Astacidea, which also contains lobsters.

See Eye and Crayfish

Crustacean

Crustaceans are a group of arthropods that are a part of the subphylum Crustacea, a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish), seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, opossum shrimps, amphipods and mantis shrimp.

See Eye and Crustacean

Crystal

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

See Eye and Crystal

Crystallin

In anatomy, a crystallin is a water-soluble structural protein found in the lens and the cornea of the eye accounting for the transparency of the structure.

See Eye and Crystallin

Darkness

Darkness is defined as a lack of illumination, an absence of visible light, or a surface that absorbs light.

See Eye and Darkness

Decapoda

The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, and includes crabs, lobsters, crayfish, shrimp, and prawns.

See Eye and Decapoda

Degree (angle)

A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle in which one full rotation is 360 degrees.

See Eye and Degree (angle)

Depth perception

Depth perception is the ability to perceive distance to objects in the world using the visual system and visual perception.

See Eye and Depth perception

Diffraction

Diffraction is the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.

See Eye and Diffraction

Dragonfly

A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata.

See Eye and Dragonfly

Emission theory (vision)

Emission theory or extramission theory (variants: extromission) or extromissionism is the proposal that visual perception is accomplished by eye beams emitted by the eyes.

See Eye and Emission theory (vision)

Entrainment (chronobiology)

In the study of chronobiology, entrainment refers to the synchronization of a biological clock to an environmental cycle.

See Eye and Entrainment (chronobiology)

Eye

An eye is a sensory organ that allows an organism to perceive visual information. Eye and eye are sensory organs and visual system.

See Eye and Eye

Eye chart

An eye chart is a chart used to measure visual acuity comprising lines of optotypes in ranges of sizes.

See Eye and Eye chart

Eye color

Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.

See Eye and Eye color

Eye development

Eye formation in the human embryo begins at approximately three weeks into embryonic development and continues through the tenth week.

See Eye and Eye development

Eye disease

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

See Eye and Eye disease

Eye injury

Physical or chemical injuries of the eye can be a serious threat to vision if not treated appropriately and in a timely fashion.

See Eye and Eye injury

Eye movement

Eye movement includes the voluntary or involuntary movement of the eyes.

See Eye and Eye movement

Eyelash

An eyelash (also called lash) (Neo-Latin: cilium, plural cilia) is one of the hairs that grows at the edges of the top and bottom eyelids, spanning outwards and away from the eyes.

See Eye and Eyelash

Eyelid

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

See Eye and Eyelid

Field of view

The field of view (FOV) is the angular extent of the observable world that is seen at any given moment.

See Eye and Field of view

Fish

A fish (fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits.

See Eye and Fish

Flatworm

The flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning "worm") are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.

See Eye and Flatworm

Focus (optics)

In geometrical optics, a focus, also called an image point, is a point where light rays originating from a point on the object converge.

See Eye and Focus (optics)

Fovea centralis

The fovea centralis is a small, central pit composed of closely packed cones in the eye.

See Eye and Fovea centralis

Fresnel lens

A Fresnel lens is a type of composite compact lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections.

See Eye and Fresnel lens

G protein-coupled receptor

G protein-coupled receptors (GPCRs), also known as seven-(pass)-transmembrane domain receptors, 7TM receptors, heptahelical receptors, serpentine receptors, and G protein-linked receptors (GPLR), form a large group of evolutionarily related proteins that are cell surface receptors that detect molecules outside the cell and activate cellular responses.

See Eye and G protein-coupled receptor

Gastropoda

Gastropods, commonly known as slugs and snails, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda.

See Eye and Gastropoda

Glycosaminoglycan

Glycosaminoglycans (GAGs) or mucopolysaccharides are long, linear polysaccharides consisting of repeating disaccharide units (i.e. two-sugar units).

See Eye and Glycosaminoglycan

Glyptonotus antarcticus

Glyptonotus antarcticus is a benthic marine isopod crustacean in the suborder Valvifera.

See Eye and Glyptonotus antarcticus

Guanine

Guanine (symbol G or Gua) is one of the four main nucleobases found in the nucleic acids DNA and RNA, the others being adenine, cytosine, and thymine (uracil in RNA).

See Eye and Guanine

Hagfish

Hagfish, of the class Myxini (also known as Hyperotreti) and order Myxiniformes, are eel-shaped jawless fish (occasionally called slime eels).

See Eye and Hagfish

Horse

The horse (Equus ferus caballus) is a domesticated, one-toed, hoofed mammal.

See Eye and Horse

Human eye

The human eye is an organ of the sensory nervous system that reacts to visible light and allows the use of visual information for various purposes including seeing things, keeping balance, and maintaining circadian rhythm. Eye and human eye are sensory organs and visual system.

See Eye and Human eye

Hyaluronic acid

Hyaluronic acid (abbreviated HA; conjugate base hyaluronate), also called hyaluronan, is an anionic, nonsulfated glycosaminoglycan distributed widely throughout connective, epithelial, and neural tissues.

See Eye and Hyaluronic acid

Hydrothermal vent

Hydrothermal vents are fissures on the seabed from which geothermally heated water discharges.

See Eye and Hydrothermal vent

Hyperiidea

The Hyperiidea are a suborder of amphipods, small aquatic crustaceans.

See Eye and Hyperiidea

Hyperspectral imaging

Hyperspectral imaging collects and processes information from across the electromagnetic spectrum.

See Eye and Hyperspectral imaging

Image

An image is a visual representation.

See Eye and Image

Infrared

Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves.

See Eye and Infrared

Infrared sensing in snakes

The ability to sense infrared thermal radiation evolved independently in three different groups of snakes, consisting of the families of Boidae (boas), Pythonidae (pythons), and the subfamily Crotalinae (pit vipers).

See Eye and Infrared sensing in snakes

Insect

Insects (from Latin insectum) are hexapod invertebrates of the class Insecta.

See Eye and Insect

Intrinsically photosensitive retinal ganglion cell

Intrinsically photosensitive retinal ganglion cells (ipRGCs), also called photosensitive retinal ganglion cells (pRGC), or melanopsin-containing retinal ganglion cells (mRGCs), are a type of neuron in the retina of the mammalian eye. Eye and Intrinsically photosensitive retinal ganglion cell are visual system.

See Eye and Intrinsically photosensitive retinal ganglion cell

Ion channel

Ion channels are pore-forming membrane proteins that allow ions to pass through the channel pore.

See Eye and Ion channel

Iris (anatomy)

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

See Eye and Iris (anatomy)

Jumping spider

Jumping spiders are a group of spiders that constitute the family Salticidae.

See Eye and Jumping spider

Larva

A larva (larvae) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage.

See Eye and Larva

Lens (vertebrate anatomy)

The lens, or crystalline lens, is a transparent biconvex structure in most land vertebrate eyes.

See Eye and Lens (vertebrate anatomy)

Light

Light, visible light, or visible radiation is electromagnetic radiation that can be perceived by the human eye.

See Eye and Light

Limulus

Limulus is a genus of horseshoe crab, with one extant species, the Atlantic horseshoe crab (Limulus polyphemus).

See Eye and Limulus

Lobster

Lobsters are malacostracans of the family Nephropidae (synonym Homaridae).

See Eye and Lobster

Luneburg lens

A Luneburg lens (original German Lüneburg lens) is a spherically symmetric gradient-index lens.

See Eye and Luneburg lens

Mammalian eye

Mammals normally have a pair of eyes. Eye and Mammalian eye are sensory organs.

See Eye and Mammalian eye

Mantis

Mantises are an order (Mantodea) of insects that contains over 2,400 species in about 460 genera in 33 families.

See Eye and Mantis

Mantis shrimp

Mantis shrimp are carnivorous marine crustaceans of the order Stomatopoda.

See Eye and Mantis shrimp

Mayfly

Mayflies (also known as shadflies or fishflies in Canada and the upper Midwestern United States, as Canadian soldiers in the American Great Lakes region, and as up-winged flies in the United Kingdom) are aquatic insects belonging to the order Ephemeroptera.

See Eye and Mayfly

Melanin

Melanin is a family of biomolecules organized as oligomers or polymers, which among other functions provide the pigments of many organisms.

See Eye and Melanin

Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol, is a unit of angular measurement equal to of one degree.

See Eye and Minute and second of arc

Mirror

A mirror, also known as a looking glass, is an object that reflects an image.

See Eye and Mirror

Mollusca

Mollusca is the second-largest phylum of invertebrate animals, after Arthropoda; members are known as molluscs or mollusks.

See Eye and Mollusca

Monocular vision

Monocular vision is vision using only one eye.

See Eye and Monocular vision

Monophyly

In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of taxa which meets these criteria.

See Eye and Monophyly

Mysida

Mysida is an order of small, shrimp-like crustaceans in the malacostracan superorder Peracarida.

See Eye and Mysida

National Wildlife Federation

The National Wildlife Federation (NWF) is the United States' largest private, nonprofit conservation education and advocacy organization, with over six million members and supporters, and 51 state and territorial affiliated organizations (including Puerto Rico and the Virgin Islands).

See Eye and National Wildlife Federation

Nature (journal)

Nature is a British weekly scientific journal founded and based in London, England.

See Eye and Nature (journal)

Nature Reviews Neuroscience

Nature Reviews Neuroscience is a monthly peer-reviewed review journal published by Nature Portfolio.

See Eye and Nature Reviews Neuroscience

Nervous system

In biology, the nervous system is the highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body.

See Eye and Nervous system

Neuron

A neuron, neurone, or nerve cell is an excitable cell that fires electric signals called action potentials across a neural network in the nervous system.

See Eye and Neuron

Nictitating membrane

The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the eye from the medial canthus to protect and moisten it while maintaining vision.

See Eye and Nictitating membrane

Ommatidium

The compound eyes of arthropods like insects, crustaceans and millipedes are composed of units called ommatidia (ommatidium).

See Eye and Ommatidium

Ophiomastix wendtii

Ophiomastix wendtii, also known by its common name, the red ophiocoma, and formerly as Ophiocoma wendtii, is a species of brittle stars that inhabits coral reefs from Bermuda to Brazil, primarily in the Caribbean sea.

See Eye and Ophiomastix wendtii

Ophthalmology

Ophthalmology is a clinical and surgical specialty within medicine that deals with the diagnosis and treatment of eye disorders.

See Eye and Ophthalmology

Opsin

Animal opsins are G-protein-coupled receptors and a group of proteins made light-sensitive via a chromophore, typically retinal.

See Eye and Opsin

Optic nerve

In neuroanatomy, the optic nerve, also known as the second cranial nerve, cranial nerve II, or simply CN II, is a paired cranial nerve that transmits visual information from the retina to the brain. Eye and optic nerve are visual system.

See Eye and Optic nerve

Optical axis

An optical axis is an imaginary line that passes through the geometrical center of an optical system such as a camera lens, microscope or telescopic sight.

See Eye and Optical axis

Optics

Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it.

See Eye and Optics

Orbit (anatomy)

In anatomy, the orbit is the cavity or socket/hole of the skull in which the eye and its appendages are situated. Eye and orbit (anatomy) are visual system.

See Eye and Orbit (anatomy)

Organism

An organism is defined in a medical dictionary as any living thing that functions as an individual.

See Eye and Organism

Parallel evolution

Parallel evolution is the similar development of a trait in distinct species that are not closely related, but share a similar original trait in response to similar evolutionary pressure.

See Eye and Parallel evolution

PAX6

Paired box protein Pax-6, also known as aniridia type II protein (AN2) or oculorhombin, is a protein that in humans is encoded by the PAX6 gene.

See Eye and PAX6

Pecten (bivalve)

Pecten is a genus of large scallops or saltwater clams, marine bivalve molluscs in the family Pectinidae, the scallops.

See Eye and Pecten (bivalve)

Peripheral vision

Peripheral vision, or indirect vision, is vision as it occurs outside the point of fixation, i.e. away from the center of gaze or, when viewed at large angles, in (or out of) the "corner of one's eye".

See Eye and Peripheral vision

Phased array

In antenna theory, a phased array usually means an electronically scanned array, a computer-controlled array of antennas which creates a beam of radio waves that can be electronically steered to point in different directions without moving the antennas.

See Eye and Phased array

Photopic vision

Photopic vision is the vision of the eye under well-lit conditions (luminance levels from 10 to 108 cd/m2).

See Eye and Photopic vision

Photoreceptor cell

A photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction.

See Eye and Photoreceptor cell

Photoreceptor protein

Photoreceptor proteins are light-sensitive proteins involved in the sensing and response to light in a variety of organisms.

See Eye and Photoreceptor protein

Photosensitivity

Photosensitivity is the amount to which an object reacts upon receiving photons, especially visible light.

See Eye and Photosensitivity

Phylogenetics

In biology, phylogenetics is the study of the evolutionary history and relationships among or within groups of organisms.

See Eye and Phylogenetics

Phylum

In biology, a phylum (phyla) is a level of classification or taxonomic rank below kingdom and above class.

See Eye and Phylum

Pinhole camera

A pinhole camera is a simple camera without a lens but with a tiny aperture (the so-called pinhole)—effectively a light-proof box with a small hole in one side.

See Eye and Pinhole camera

Pit viper

The Crotalinae, commonly known as pit vipers,Mehrtens JM (1987).

See Eye and Pit viper

Polarization (waves)

italics (also italics) is a property of transverse waves which specifies the geometrical orientation of the oscillations.

See Eye and Polarization (waves)

Pontella

Pontella is a marine copepod genus in the family Pontellidae.

See Eye and Pontella

Prawn

Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs (members of the order of decapods), some of which are edible.

See Eye and Prawn

Pretectal area

In neuroanatomy, the pretectal area, or pretectum, is a midbrain structure composed of seven nuclei and comprises part of the subcortical visual system. Eye and pretectal area are visual system.

See Eye and Pretectal area

Pseudopupil

In the compound eye of invertebrates such as insects and crustaceans, the pseudopupil appears as a dark spot which moves across the eye as the animal is rotated.

See Eye and Pseudopupil

Pupil

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

See Eye and Pupil

Pupillary light reflex

The pupillary light reflex (PLR) or photopupillary reflex is a reflex that controls the diameter of the pupil, in response to the intensity (luminance) of light that falls on the retinal ganglion cells of the retina in the back of the eye, thereby assisting in adaptation of vision to various levels of lightness/darkness.

See Eye and Pupillary light reflex

Rabbit

Rabbits are small mammals in the family Leporidae (which also includes the hares), which is in the order Lagomorpha (which also includes pikas).

See Eye and Rabbit

Ray (optics)

In optics, a ray is an idealized geometrical model of light or other electromagnetic radiation, obtained by choosing a curve that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow.

See Eye and Ray (optics)

Refractive index

In optics, the refractive index (or refraction index) of an optical medium is a dimensionless number that gives the indication of the light bending ability of that medium.

See Eye and Refractive index

Retina

The retina (or retinas) is the innermost, light-sensitive layer of tissue of the eye of most vertebrates and some molluscs. Eye and retina are visual system.

See Eye and Retina

Retinohypothalamic tract

In neuroanatomy, the retinohypothalamic tract (RHT) is a photic neural input pathway involved in the circadian rhythms of mammals.

See Eye and Retinohypothalamic tract

Rhodopsin

Rhodopsin, also known as visual purple, is a protein encoded by the RHO gene and a G-protein-coupled receptor (GPCR).

See Eye and Rhodopsin

Rod cell

Rod cells are photoreceptor cells in the retina of the eye that can function in lower light better than the other type of visual photoreceptor, cone cells.

See Eye and Rod cell

Rotifer

The rotifers (from the Latin rota, "wheel", and -fer, "bearing"), commonly called wheel animals or wheel animalcules, make up a phylum (Rotifera) of microscopic and near-microscopic pseudocoelomate animals.

See Eye and Rotifer

Sawfly

Sawflies are wasp-like insects that are in the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps.

See Eye and Sawfly

Scallop

Scallop is a common name that encompasses various species of marine bivalve mollusks in the taxonomic family Pectinidae, the scallops.

See Eye and Scallop

Scotopic vision

In the study of visual perception, scotopic vision (or scotopia) is the vision of the eye under low-light conditions.

See Eye and Scotopic vision

Scutigera

Scutigera is a centipede genus in the scutigeromorph (house centipede) family Scutigeridae, a group of centipedes with long limbs and true compound eyes (which were once thought to be secondary, re-evolved "pseudofacetted eyes").

See Eye and Scutigera

Sense

A sense is a biological system used by an organism for sensation, the process of gathering information about the surroundings through the detection of stimuli.

See Eye and Sense

Sensory organs of gastropods

The sensory organs of gastropods (snails and slugs) include olfactory organs, eyes, statocysts and mechanoreceptors.

See Eye and Sensory organs of gastropods

Shrimp

A shrimp (shrimp (US) or shrimps (UK) is a crustacean (a form of shellfish) with an elongated body and a primarily swimming mode of locomotion – typically belonging to the Caridea or Dendrobranchiata of the order Decapoda, although some crustaceans outside of this order are also referred to as "shrimp".

See Eye and Shrimp

Simple eye in invertebrates

A simple eye or ocellus (sometimes called a pigment pit) is a form of eye or an optical arrangement which has a single lens without the sort of elaborate retina that occurs in most vertebrates.

See Eye and Simple eye in invertebrates

Snail

A snail is a shelled gastropod.

See Eye and Snail

Snake

Snakes are elongated, limbless reptiles of the suborder Serpentes.

See Eye and Snake

Spherical aberration

In optics, spherical aberration (SA) is a type of aberration found in optical systems that have elements with spherical surfaces.

See Eye and Spherical aberration

Springer Science+Business Media

Springer Science+Business Media, commonly known as Springer, is a German multinational publishing company of books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing.

See Eye and Springer Science+Business Media

Stimulus (physiology)

In physiology, a stimulus is a detectable change in the physical or chemical structure of an organism's internal or external environment.

See Eye and Stimulus (physiology)

Stimulus–response model

The stimulus–response model is a conceptual framework in psychology that describes how individuals respond to external stimuli.

See Eye and Stimulus–response model

Strepsiptera

The Strepsiptera are an order of insects with eleven extant families that include about 600 described species.

See Eye and Strepsiptera

Sunlight

Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light.

See Eye and Sunlight

Suprachiasmatic nucleus

The suprachiasmatic nucleus or nuclei (SCN) is a small region of the brain in the hypothalamus, situated directly above the optic chiasm.

See Eye and Suprachiasmatic nucleus

Tapetum lucidum

The paren;;: tapeta lucida) is a layer of tissue in the eye of many vertebrates and some other animals. Lying immediately behind the retina, it is a retroreflector. It reflects visible light back through the retina, increasing the light available to the photoreceptors (although slightly blurring the image).

See Eye and Tapetum lucidum

Tears

Tears are a clear liquid secreted by the lacrimal glands (tear gland) found in the eyes of all land mammals.

See Eye and Tears

The Journal of Experimental Biology

Journal of Experimental Biology (formerly The British Journal of Experimental Biology) is a peer-reviewed scientific journal in the field of comparative physiology and integrative biology.

See Eye and The Journal of Experimental Biology

The Quarterly Review of Biology

The Quarterly Review of Biology is a peer-reviewed scientific journal covering all aspects of biology.

See Eye and The Quarterly Review of Biology

Transient receptor potential channel

Transient receptor potential channels (TRP channels) are a group of ion channels located mostly on the plasma membrane of numerous animal cell types.

See Eye and Transient receptor potential channel

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 appreciable scattering of light.

See Eye and Transparency and translucency

Trilobite

Trilobites (meaning "three lobes") are extinct marine arthropods that form the class Trilobita.

See Eye and Trilobite

TRPV1

The transient receptor potential cation channel subfamily V member 1 (TRPV1), also known as the capsaicin receptor and the vanilloid receptor 1, is a protein that, in humans, is encoded by the TRPV1 gene.

See Eye and TRPV1

Ultraviolet

Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays.

See Eye and Ultraviolet

Vertebrate

Vertebrates are deuterostomal animals with bony or cartilaginous axial endoskeleton — known as the vertebral column, spine or backbone — around and along the spinal cord, including all fish, amphibians, reptiles, birds and mammals.

See Eye and Vertebrate

Visual acuity

Visual acuity (VA) commonly refers to the clarity of vision, but technically rates an animal's ability to recognize small details with precision.

See Eye and Visual acuity

Visual cortex

The visual cortex of the brain is the area of the cerebral cortex that processes visual information. Eye and visual cortex are visual system.

See Eye and Visual cortex

Visual perception

Visual perception is the ability to interpret the surrounding environment through photopic vision (daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible spectrum reflected by objects in the environment. Eye and Visual perception are visual system.

See Eye and Visual perception

Visual system

The visual system is the physiological basis of visual perception (the ability to detect and process light).

See Eye and Visual system

Vitreous body

The vitreous body (vitreous meaning "glass-like") is the clear gel that fills the space between the lens and the retina of the eyeball (the vitreous chamber) in humans and other vertebrates.

See Eye and Vitreous body

Zoom lens

A zoom lens is a system of camera lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed-focal-length (FFL) lens (prime lens).

See Eye and Zoom lens

See also

Sensory organs

References

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

Also known as Animal eyes, Apposition eye, Camera eye, Camera-type eye, Conjunctival disorders, Cyber-eye, Eye (anatomy), Eye (invertebrate), Eye (vertebrate), Eye ball, Eye balls, Eye membrane, Eyeball, Eyeballs, Eyes, Ocular, Ocular globe, Oculars, Robotic eye, Schizochroal eye, Simple eye, .

, Diffraction, Dragonfly, Emission theory (vision), Entrainment (chronobiology), Eye, Eye chart, Eye color, Eye development, Eye disease, Eye injury, Eye movement, Eyelash, Eyelid, Field of view, Fish, Flatworm, Focus (optics), Fovea centralis, Fresnel lens, G protein-coupled receptor, Gastropoda, Glycosaminoglycan, Glyptonotus antarcticus, Guanine, Hagfish, Horse, Human eye, Hyaluronic acid, Hydrothermal vent, Hyperiidea, Hyperspectral imaging, Image, Infrared, Infrared sensing in snakes, Insect, Intrinsically photosensitive retinal ganglion cell, Ion channel, Iris (anatomy), Jumping spider, Larva, Lens (vertebrate anatomy), Light, Limulus, Lobster, Luneburg lens, Mammalian eye, Mantis, Mantis shrimp, Mayfly, Melanin, Minute and second of arc, Mirror, Mollusca, Monocular vision, Monophyly, Mysida, National Wildlife Federation, Nature (journal), Nature Reviews Neuroscience, Nervous system, Neuron, Nictitating membrane, Ommatidium, Ophiomastix wendtii, Ophthalmology, Opsin, Optic nerve, Optical axis, Optics, Orbit (anatomy), Organism, Parallel evolution, PAX6, Pecten (bivalve), Peripheral vision, Phased array, Photopic vision, Photoreceptor cell, Photoreceptor protein, Photosensitivity, Phylogenetics, Phylum, Pinhole camera, Pit viper, Polarization (waves), Pontella, Prawn, Pretectal area, Pseudopupil, Pupil, Pupillary light reflex, Rabbit, Ray (optics), Refractive index, Retina, Retinohypothalamic tract, Rhodopsin, Rod cell, Rotifer, Sawfly, Scallop, Scotopic vision, Scutigera, Sense, Sensory organs of gastropods, Shrimp, Simple eye in invertebrates, Snail, Snake, Spherical aberration, Springer Science+Business Media, Stimulus (physiology), Stimulus–response model, Strepsiptera, Sunlight, Suprachiasmatic nucleus, Tapetum lucidum, Tears, The Journal of Experimental Biology, The Quarterly Review of Biology, Transient receptor potential channel, Transparency and translucency, Trilobite, TRPV1, Ultraviolet, Vertebrate, Visual acuity, Visual cortex, Visual perception, Visual system, Vitreous body, Zoom lens.