eye

eyetop: cross section of a human eyeA. vitreous humorB. optic nerveC. fovea centralisD. retinaE. choroidF. scleraG. corneaH. aqueous humorI. pupilJ. irisK. lensbottom: the eye of hurricane Catarina, off the coast of Brazil in 2004, as seen from the International Space Station

eye

E0307500 (ī)n.1. An organ of vision or of light sensitivity.2. a. Either of a pair of hollow structures located in bony sockets of the skull, functioning together or independently, each having a lens capable of focusing incident light on an internal photosensitive retina from which nerve impulses are sent to the brain; the vertebrate organ of vision.b. The external, visible portion of this organ together with its associated structures, especially the eyelids, eyelashes, and eyebrows.c. The pigmented iris of this organ.3. The faculty of seeing; vision.4. The ability to make intellectual or aesthetic judgments: has a good eye for understated fashion.5. a. A way of regarding something; a point of view: To my eye, the decorations are excellent.b. Attention: The lavish window display immediately got my eye.c. Watchful attention or supervision: always under his boss's eye; kept an eye on her valuables.6. Something suggestive of the vertebrate organ of vision, especially:a. An opening in a needle.b. The aperture of a camera.c. A loop, as of metal, rope, or thread.d. A circular marking on a peacock's feather.e. Chiefly Southern US The round flat cover over the hole on the top of a wood-burning stove. Also called regionally cap¹, griddle.7. A photosensitive device, such as a photoelectric cell.8. Botany a. A bud on a twig or tuber: the eye of a potato.b. The often differently colored center of the corolla of some flowers.9. a. Meteorology The circular area of relative calm at the center of a cyclone.b. The center or focal point of attention or action: right in the eye of the controversy.10. Informal A detective, especially a private investigator.11. A choice center cut of meat, as of beef: eye of the round.tr.v. eyed, eye·ing or ey·ing (ī′ĭng), eyes 1. To look at: eyed the passing crowd with indifference.2. To watch closely: eyed the shark's movements.3. To supply with an eye.Idioms: all eyes Fully attentive. an eye for an eye Punishment in which an offender suffers what the victim has suffered. clap/lay/set (one's) eyes on To look at. eye to eye In agreement: We're eye to eye on all the vital issues. have eyes for To be interested in. have (one's) eye on1. To look at, especially attentively or continuously.2. To have as one's objective. in the eye of the wind Nautical In a direction opposite that of the wind; close to the wind. in the public eye1. Frequently seen in public or in the media.2. Widely publicized; well-known. my eye Slang In no way; not at all. Used interjectionally. with an eye to With a view to: redecorated the room with an eye to its future use as a nursery. with (one's) eyes closed Unaware of the risks involved. with (one's) eyes open Aware of the risks involved.

[Middle English, from Old English ēge, ēage; see ok^w- in Indo-European roots.]

eye

(aɪ) n1. (Anatomy) the organ of sight of animals, containing light-sensitive cells associated with nerve fibres, so that light entering the eye is converted to nervous impulses that reach the brain. In man and other vertebrates the iris controls the amount of light entering the eye and the lens focuses the light onto the retina. 2. (often plural) the ability to see; sense of vision: weak eyes. 3. (Anatomy) the visible external part of an eye, often including the area around it: heavy-lidded eyes; piercing eyes. 4. a look, glance, expression, or gaze: a stern eye. 5. a sexually inviting or provocative look (esp in the phrases give (someone) the (glad) eye, make eyes at)6. attention or observation (often in the phrases catch someone's eye, keep an eye on, cast an eye over)7. ability to recognize, judge, or appreciate: an eye for antiques. 8. (often plural) opinion, judgment, point of view, or authority: in the eyes of the law. 9. (Biology) a structure or marking having the appearance of an eye, such as the bud on a twig or potato tuber or a spot on a butterfly wing10. a small loop or hole, as at one end of a needle11. (Physical Geography) a small area of low pressure and calm in the centre of a tornado or cyclone12. (Electronics) See photocell13. (Professions) informal See private eye14. all eyes informal acutely vigilant or observant: the children were all eyes. 15. my eye all my eye informal rubbish; nonsense16. an eye for an eye retributive or vengeful justice; retaliation17. cut one's eye after someone cut one's eye at someone cut one's eye on someone Caribbean to look rudely at a person and then turn one's face away sharply while closing one's eyes: a gesture of contempt18. eyes out NZ with every possible effort: he went at the job eyes out. 19. get one's eye in chiefly sport to become accustomed to the conditions, light, etc, with a consequent improvement in one's performance20. half an eye a. a modicum of perceptiveness: anyone with half an eye can see she's in love. b. continuing unobtrusive observation or awareness: the dog had half an eye on the sheep. 21. have eyes for to be interested in: she has eyes only for him. 22. in one's mind's eye pictured within the mind; imagined or remembered vividly23. in the public eye exposed to public curiosity or publicity24. keep an eye open keep an eye out to watch with special attention (for)25. keep one's eyes peeled keep one's eyes skinned to watch vigilantly (for)26. look someone in the eye to look at someone openly and without shame or embarrassment27. make eyes make sheep's eyes old-fashioned to ogle amorously28. more than meets the eye hidden motives, meaning, or facts29. pick the eyes out Austral and NZ to select the best parts or pieces (of)30. see eye to eye to agree (with)31. set eyes on lay eyes on clap eyes on (usually used with a negative) to see: she had never laid eyes on him before. 32. (Nautical Terms) the eye of the wind nautical the direction from which the wind is blowing33. turn a blind eye to close one's eyes to to pretend not to notice or ignore deliberately34. up to one's eyes extremely busy (with)35. with a … eye in a … manner: he regards our success with a jealous eye. 36. with an eye to having an eye to (preposition) a. regarding; with reference to: with an eye to one's own interests. b. with the intention or purpose of: with an eye to reaching agreement. 37. with one's eyes open in the full knowledge of all relevant facts38. with one's eyes shut a. with great ease, esp as a result of thorough familiarity: I could drive home with my eyes shut. b. without being aware of all the factsvb (tr) , eyes, eyeing, eying or eyed39. to look at carefully or warily40. Also: eye up to look at in a manner indicating sexual interest; ogle[Old English ēage; related to Old Norse auga, Old High German ouga, Sanskrit aksi] ˈeyeless adj ˈeyeˌlike adj

eye

(aɪ) n (Zoology) another word for nye

eye

(aɪ)

n., v. eyed, ey•ing eye•ing. n. 1. the organ of sight; in vertebrates, one of a pair of spherical bodies contained in an orbit of the skull, along with its associated structures. 2. the visible parts of this organ, as the cornea, iris, and pupil, and the surrounding eyebrows, eyelids, and eyelashes. 3. this organ with respect to the color of the iris: blue eyes. 4. the region surrounding the eye: puffy eyes. 5. sight; vision: a sharp eye. 6. the power of seeing; appreciative or discriminating visual perception: the eye of an artist. 7. a look, glance, or gaze: cast one's eye upon a scene. 8. an attentive look; observation: under the eye of a guard. 9. regard, view, aim, or intention: an eye to one's own advantage. 10. judgment; opinion: in the eyes of the law. 11. a center; crux: the eye of an issue. 12. something suggesting the eye in appearance, as the opening in the lens of a camera or a peephole. 13. a bud, as of a potato or other tuber. 14. a small, contrastingly colored part at the center of a flower. 15. a usu. lean, muscular section of a cut of meat. 16. a roundish spot, as on a tail feather of a peacock. 17. the hole in a needle. 18. a hole in a thing for the insertion of some object, as the handle of a tool: the eye of an ax. 19. a ring through which something, as a rope or rod, is passed. 20. the loop into which a hook is inserted. 21. a photoelectric cell or similar device used to perform a function analogous to visual inspection. 22. a hole formed during the maturation of cheese. 23. the region of lighter winds and fair weather at the center of a tropical cyclone. 24. the direction from which a wind is blowing. v.t. 25. to look at; view: to eye the wonders of nature. 26. to watch carefully: eyed them with suspicion. 27. to make an eye in: to eye a needle. v.i. 28. Obs. to appear; seem. Idioms: 1. be all eyes, to be extremely attentive. 2. catch someone's eye, to attract someone's attention. 3. give someone the eye, to give someone a flirtatious or warning glance. 4. have an eye for, to be discerning about. 5. have eyes for, to be attracted to. 6. keep one's eyes open, to be especially alert or observant. 7. lay or set eyes on, to see. 8. make eyes, to glance flirtatiously; ogle. 9. run one's eye over, to examine hastily. 10. see eye to eye, to agree. 11. with an eye to, with the intention or consideration of. [before 900; Middle English eie, ie, Old English ēge, variant of ēage; c. Old Saxon ōga, Old High German ouga, Old Norse auga; akin to Latin oculus, Greek ṓps] eye′like`, adj.

eyecross section of a human eye

eye

(ī)1. The organ of the body with which an animal is able to see or sense light. In vertebrate animals, the eye occurs as one of a pair, each consisting of a spherical structure that is filled with fluid. Incoming light is refracted by the cornea and transmitted through the pupil to the lens, which focuses the image onto the retina. See more at compound eye, eyespot.2. Botany A bud on a tuber, such as a potato.3. The relatively calm area at the center of a hurricane or similar storm. See more at hurricane.

Eye, Nye

a brood of pheasants.

Eye(s)

See Also: EYES, BRIGHT; EYEBROWS; EYE COLOR; EYE EXPRESSIONS, EYELASHES; EYELIDS; EYE MOVEMENTS

Behind the glasses his eyes looked look like little bicycle wheels at dizzy speed —William Faulkner
Dull eyes set like pebbles in a puffy, unwholesome-looking face —Eric Ambler
Eye/pebble comparisons abound, with examples throughout this section.
Eye-sockets deep as those of a death’s head —Thomas Hardy
Eye-sockets … like dark caves —John Wainwright
Eyeballs like shelled hard-boiled eggs —Ivan Bunin
Eyes as big and as soft and as transparent as ripe gooseberries —Edna O’Brien
Eyes … as cloudy as poisoned oysters —Miles Gibson
Eyes … big and shiny, black as oil —Shirley Ann Grau
Eyes blackly circled like those of a raccoon —Lael Tucker Wertenbaker
Eyes … carefully painted like the eyes on Egyptian frescoes —Anals Nin, Chicago Review, Winter-Spring, 1962
Eyes … deep and dark like mountain nights —Mary Hedin
Eyes … deep as a well —Walter Savage Landor
Eyes flat as glass —James Lee Burke
Eyes … flat gold, like a lemur’s —Sue Grafton
Eyes glazed and almost lightless like the little button eyes of a doll —George Garrett
Eyes … large and gray, and baleful, like glass on fire —Norman Mailer
Eyes large as fifty-cent pieces, but pale, like dusty stones —Ludwig Bemelmans
Bemelmans’ subject is William Randolph Hearst.
Eyes … large as saucers —E. N. Slocum, line from lyric of a song written in 1868 entitled “On the Beach at Cape May”
Eyes like a codfish —Frank Swinnerton
Eyes like a couple of wells —William Diehl
Eyes … like an Arizona sunset, and they were supported on pouches as large and shapeless as badly packed duffle bags —Jimmy Sangster
Eyes like a pinwheel —Ann Beattie
Eyes … like a spaniel’s —Ouida
Eyes like a starless winter night —clear, black, bleak —A. E. Maxwell
Eyes … like chestnuts floating on twin pools of milk —William Styron
Eyes like cold cavities in his head —Natascha Wodin
Eyes … like crickets in daylight —Rochelle Ratner
Eyes like crosses burning on a lawn —Rochelle Ratner
Eyes like currants in a half-cooked suet pudding —Robert Graves
A simple variation from a short story by Katherine Mansfield: “Little eyes, like currants.”
Eyes like dark searchlights —Ross Macdonald
Eyes like dusty lapis lazuli —S. J. Perelman
Eyes like forest pools —W. Somerset Maugham
Eyes … like forget-me-nots —Mazo De La Roche
Eyes … like ground owls, deep in their burrows —Harold Adams
Eyes like holes burned with a cigar —William Faulkner
Eyes … like holes were poked in a snowbank —Raymond Chandler
Eyes like jelly —Hanoch Bartov
Eyes like licked stones —Virginia Woolf
Eyes like licorice gumdrops —Robert Campbell
Eyes … like lustrous black currants —Frank Swinnerton
Eyes, like marigolds, had sheathed their light —William Shakespeare
In Shakespeare’s time ‘sheathed’ was written as ‘sheath’d.’
Eyes like mice peeking into my pockets —Robert Campbell
Eyes like oiled black olives —Frank Tuohy
Eyes … like old pictures of Rachmaninoff s eyes —Henry Van Dyke
Eyes like onions —Donald Barthelme
Eyes … like pale marble in a field of red —Linda West Eckhardt
Eyes … like peas —T. Coraghessan Boyle
Eyes … like pebbles at the bottom of a mountain trout pool, fixed and icy —Donald MacKenzie
Eyes like pebbles, the kind of pebbles which kids call aggies —Ludwig Bemelmans
Eyes like pebbles unwashed by the sea —Kathleen Farrell
Eyes … like pools of oil —T. Coraghessan Boyle
Eyes … like punctuation marks —Geoffrey Wolff
Eyes … like rubber knobs, like they’d give to the touch —William Faulkner
Eyes like searchlights —Donald McCaig
Eyes..like shrewd marbles —Harvey Swados
Eyes like the brown waters of a woodland stream —Henry Van Dyke
Eyes like the deep, blue boundless heaven —Percy Bysshe Shelley
(Watery gray) eyes, like the thick edges of broken skylight glass —Willa Cather
Eyes … like those of a lobster, as if they were on stalks —William James, letter from Germany to sister Alice, January 9, 1868
Eyes … like tiny stone wedges hammer between the lids —Ross Macdonald
Eyes like tunnels —Arthur Miller
Eyes like twin daisies in a bucket of blood —Leonard Washborn, Inter-Ocean, Chicago newspaper, 1880s
Eyes … like two black seeds —Dashiell Hammett
Eyes … like two holes burned in a blanket —Borden Deal
Eyes … like two obeisant satellites —Cynthia Ozick
Eyes … like two pissholes in the snow —American colloquialism
Eyes … like violets by a river of pure water —Oscar Wilde
Eyes like washed pebbles stuck in cement (gave him a slightly aggressive look) —Donald MacKenzie
Eyes like white clay marbles —Randall Jarrell
Eyes limpid and still like pools of water —Robert Louis Stevenson
Eyes … like glass marbles —Herman Wouk
Eye sockets..as flat as saucers —Z. Vance Wilson
Eyes peering between folds of fat like almond kernels in half-split shells —Edith Wharton
Eyes pressed so deep in his head that they seemed … like billiard balls sunk in their pockets —William Styron
Eyes, restless, softly brown like a monkey’s —F. van Wyck Mason
Eyes … round and shiny, like the glass-bead eyes of stuffed animals —Margaret Atwood
Eyes, round as cherries —Ignazio Silone
Eyes … round as quarters —Laurie Colwin
Eyes … round, inane as the blue pebbles of the rain —Dame Edith Sitwell
Eyes shaped like peach pits —Bobbie Ann Mason
Eyes … shiny and flat as mirrors —Shirley Ann Grau
Eyes … small and dark and liquid, like drops of strong coffee —Margaret Millar
Eyes … small and nacreous like painted ornaments —Jean Stafford
Eyes … small and dirty like the eyes of a potato —Ross Macdonald
Eyes … small and hard and shiny like dimes —Ross Macdonald
Eyes soft as a leading lady’s, round as a doe’s —T. Coraghessan Boyle
Eyes, speckled and hard as pebbles at the bottom of a stream —John Yount
Eyes spoked and rimmed with black, like a mourner’s rosette —Edith Pearlman
The simile is particularly appropriate as the writer is describing a character who is a widow.
Eyes that looked like imitation jewels —Henry James
Eyes the size of melons —Mary Hood
Eyes were small, so that with the mascara and the shadows painted on their lids they looked like flopping black butterflies —Eudora Welty
Her eyes looked awful [from too much liquor] as though they had been boiled —Christopher Isherwood
Her eyes lost in the fatty ridges of her face, looked like two small pieces of coal pressed into a lump of dough —William Faulkner
His eyes behind his glasses kind of all run together like broken eggs —William Faulkner
His eyes stood in his head like two poached eggs —Erich Maria Remarque
Large eyes like dark pools —Erich Maria Remarque
Little eyes like cigarette-ends —Charles Bukowski
Looked like cat’s eyes do, like a big cat against the wall, watching us —William Faulkner
Lynx-like eyes —O. Henry
Our very eyes are sometimes like our judgements, blind —William Shakespeare
Protruding eyes that looked like two fish straining to get out of a net of red threads —Flannery O’Connor
The pupils of his eyes were like disks of blue fire —Oscar Wilde
Round eyes like blue polka dots in her crimson face —Helen Hudson
Sharp stains like poor coffee under her eyes —V. S. Pritchett
She was wearing so much eyeliner that her eyes looked as if they had been drawn in ink —Jonathan Valin
Small eyes, set like a pig’s in shallow orbits —Francis Brett Young
Their eyes seemed like rings from which the gems had been dropped —Dante Alighieri
Two little eyes like gimlet holes —Émile Zola
The veins in her eyeballs twisted like a map of jungle rivers —Arthur Miller

eye

Past participle: eyed
Gerund: eyeing/eying

Imperative
eye
eye

Present
I eye
you eye
he/she/it eyes
we eye
you eye
they eye

Preterite
I eyed
you eyed
he/she/it eyed
we eyed
you eyed
they eyed

Present Continuous
I am eyeing/eying
you are eyeing/eying
he/she/it is eyeing/eying
we are eyeing/eying
you are eyeing/eying
they are eyeing/eying

Present Perfect
I have eyed
you have eyed
he/she/it has eyed
we have eyed
you have eyed
they have eyed

Past Continuous
I was eyeing/eying
you were eyeing/eying
he/she/it was eyeing/eying
we were eyeing/eying
you were eyeing/eying
they were eyeing/eying

Past Perfect
I had eyed
you had eyed
he/she/it had eyed
we had eyed
you had eyed
they had eyed

Future
I will eye
you will eye
he/she/it will eye
we will eye
you will eye
they will eye

Future Perfect
I will have eyed
you will have eyed
he/she/it will have eyed
we will have eyed
you will have eyed
they will have eyed

Future Continuous
I will be eyeing/eying
you will be eyeing/eying
he/she/it will be eyeing/eying
we will be eyeing/eying
you will be eyeing/eying
they will be eyeing/eying

Present Perfect Continuous
I have been eyeing/eying
you have been eyeing/eying
he/she/it has been eyeing/eying
we have been eyeing/eying
you have been eyeing/eying
they have been eyeing/eying

Future Perfect Continuous
I will have been eyeing/eying
you will have been eyeing/eying
he/she/it will have been eyeing/eying
we will have been eyeing/eying
you will have been eyeing/eying
they will have been eyeing/eying

Past Perfect Continuous
I had been eyeing/eying
you had been eyeing/eying
he/she/it had been eyeing/eying
we had been eyeing/eying
you had been eyeing/eying
they had been eyeing/eying

Conditional
I would eye
you would eye
he/she/it would eye
we would eye
you would eye
they would eye

Past Conditional
I would have eyed
you would have eyed
he/she/it would have eyed
we would have eyed
you would have eyed
they would have eyed

eye

The sense organ that converts light into electrical signals, which pass to the brain to be interpreted as visual images.

Thesaurus

Noun	1.	eye - the organ of sight oculus, opticsense organ, sensory receptor, receptor - an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulationvisual system - the sensory system for visionnaked eye - the eye unaided by any optical instrument that alters the power of vision or alters the apparent size or distance of objects; "it is not safe to look directly at the sun with the naked eye"peeper - an informal term referring to the eyeoculus dexter, OD - the right eyeoculus sinister, OS - the left eyeocellus, simple eye, stemma - an eye having a single lenscompound eye - in insects and some crustaceans: composed of many light-sensitive elements each forming a portion of an imagechoroid, choroid coat - a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eyeciliary body - the part of the tunic of the eye between the choroid coat and the iris; "the ciliary body produces aqueous humor"eyelid, lid, palpebra - either of two folds of skin that can be moved to cover or open the eye; "his lids would stay open no longer"canthus - either of the corners of the eye where the upper and lower eyelids meetepicanthic fold, epicanthus - a vertical fold of skin over the nasal canthus; normal for Mongolian peoples; sometimes occurs in Down's syndromenictitating membrane, third eyelid - a protective fold of skin in the eyes of reptiles and birds and some mammalsconjunctiva - a transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelideyeball, orb - the ball-shaped capsule containing the vertebrate eyeeye muscle, ocular muscle - one of the small muscles of the eye that serve to rotate the eyeballcornea - the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclerauvea - the part of the eye that contains the iris and ciliary body and choroiduveoscleral pathway - a tubule that drains excess aqueous humoriris - muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eyecrystalline lens, lens of the eye, lens - biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retinaarteria centralis retinae, central artery of the retina - a branch of the ophthalmic artery; enters the eyeball with the optic nervearteria ciliaris, ciliary artery - one of several arteries supplying the choroid coat of the eyearteria lacrimalis, lacrimal artery - an artery that originates from the ophthalmic artery and supplies the lacrimal gland and rectal eye muscles and the upper eyelid and the foreheadlacrimal vein, vena lacrimalis - drains the lacrimal gland; empties into the superior ophthalmic veinlacrimal apparatus - the structures that secrete and drain tears from the eyeretina - the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nervesclera, sclerotic coat - the whitish fibrous membrane (albuginea) that with the cornea forms the outer covering and protection of the eyeballmusculus sphincter pupillae, pupillary sphincter - a ring of smooth muscle surrounding the irisface, human face - the front of the human head from the forehead to the chin and ear to ear; "he washed his face"; "I wish I had seen the look on his face when he got the news"colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speechaperture - a natural opening in something
	2.	eye - good discernment (either visually or as if visually); "she has an eye for fresh talent"; "he has an artist's eye"sagaciousness, sagacity, discernment, judgement, judgment - the mental ability to understand and discriminate between relations
	3.	eye - attention to what is seen; "he tried to catch her eye"attending, attention - the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others
	4.	eye - an area that is approximately central within some larger region; "it is in the center of town"; "they ran forward into the heart of the struggle"; "they were in the eye of the storm"center, middle, centre, heartarea, country - a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography); "it was a mountainous area"; "Bible country"center stage, centre stage - the central area on a theater stagecentral city, city center, city centre - the central part of a citystorm center, storm centre - the central area or place of lowest barometric pressure within a stormfinancial center - the part of a city where financial institutions are centeredhub - a center of activity or interest or commerce or transportation; a focal point around which events revolve; "the playground is the hub of parental supervision"; "the airport is the economic hub of the area"inner city - the older and more populated and (usually) poorer central section of a citymedical center - the part of a city where medical facilities are centeredmidfield - (sports) the middle part of a playing field (as in football or lacrosse)seat - a center of authority (as a city from which authority is exercised)midstream - the middle of a stream
	5.	eye - a small hole or loop (as in a needle); "the thread wouldn't go through the eye"hole - an opening deliberately made in or through somethingneedle - a sharp pointed implement (usually steel)
Verb	1.	eye - look at eyeballlook - perceive with attention; direct one's gaze towards; "She looked over the expanse of land"; "Look at your child!"; "Look--a deer in the backyard!"

eye

noun1. eyeball, optic (informal), peeper (slang), orb (poetic), organ of vision, organ of sight He is blind in one eye.2. (often plural) eyesight, sight, vision, observation, perception, ability to see, range of vision, power of seeing her sharp eyes and acute hearing3. appreciation, taste, recognition, judgment, discrimination, perception, discernment He has an eye for talent.4. observance, observation, supervision, surveillance, attention, notice, inspection, heed, vigil, watch, lookout, vigilance, alertness, watchfulness He played under his grandmother's watchful eye.5. centre, heart, middle, mid, core, nucleus the eye of the hurricaneverb1. look at, view, study, watch, check, regard, survey, clock (Brit. slang), observe, stare at, scan, contemplate, check out (informal), inspect, glance at, gaze at, behold (archaic or literary), eyeball (slang), scrutinize, peruse, get a load of (informal), take a dekko at (Brit. slang), have or take a look at We eyed each other thoughtfully.an eye for an eye retaliation, justice, revenge, vengeance, reprisal, retribution, requital, lex talionis His philosophy was an eye for an eye and a tooth for a tooth.close or shut your eyes to something ignore, reject, overlook, disregard, pass over, turn a blind eye to, take no notice of, be oblivious to, pay no attention to, turn your back on, turn a deaf ear to, bury your head in the sand They just closed their eyes to what was going on.eye something or someone up ogle, leer at, make eyes at, give (someone) the (glad) eye My brother is forever eyeing up women in the street.in or to someone's eyes in the opinion of, in the mind of, from someone's viewpoint, in the judgment of, in someone's point of view, in the belief of He was, in their eyes, a sensible and reliable man.keep an eye or your eye on someone or something watch, supervise, observe, monitor, regard, survey, guard, look after, look out for, pay attention to, watch over, scrutinize, keep tabs on (informal), keep under surveillance, keep in view, watch like a hawk You can't keep an eye on your children 24 hours a day.see eye to eye agree, accord, get on, fall in, coincide, go along, subscribe to, be united, jibe (informal), concur, harmonize, speak the same language, be on the same wavelength, be of the same mind, be in unison They saw eye to eye on almost every aspect of the production.set, clap or lay eyes on someone or something see, meet, notice, observe, encounter, come across, run into, behold I haven't set eyes on him for years.up to your eyes very busy, overwhelmed, caught up, inundated, wrapped up in, engaged, flooded out, fully occupied, up to here, up to your elbows I am up to my eyes in work just now.Related words
adjectives ocular, oculate, ophthalmic, optic
fear ommatophobiaQuotations
"If thy right eye offend thee, pluck it out" Bible: St. Matthew
"The sight of you is good for sore eyes" [Jonathan Swift Polite Conversation]Proverbs
"The eyes are the windows of the soul"

Parts of the eye

aqueous humour, blind spot, choroid or chorioid, ciliary body, cone, conjunctiva, cornea, eyeball, fovea, iris, lens, ocular muscle, optic nerve, pupil, retina, retinal vessels, rod, sclera, suspensory ligament, vitreous body, vitreous humour

eye

noun1. An organ of vision:orb.2. The faculty of seeing:eyesight, seeing, sight, vision.Archaic: light.3. Skill in perceiving, discriminating, or judging:acumen, astuteness, clear-sightedness, discernment, discrimination, keenness, nose, penetration, perceptiveness, percipience, percipiency, perspicacity, sagacity, sageness, shrewdness, wit.4. The position from which something is observed or considered:angle, outlook, point of view, slant, standpoint, vantage, viewpoint.5. A length of line folded over and joined at the ends so as to form a curve or circle:loop, ring.6. The most intensely active central part:midst, thick.7. Informal. A person whose work is investigating crimes or obtaining hidden evidence or information:detective, investigator, sleuth.Slang: dick, gumshoe.verb1. To direct the eyes on an object:consider, contemplate, look, view.Idiom: clap one's eyes on.2. To look intently and fixedly:gape, gawk, gaze, goggle, ogle, peer, stare.Idioms: gaze open-mouthed, rivet the eyes on.3. To look at or on attentively or carefully:observe, regard, scrutinize, survey, watch.Idioms: have one's eye on, keep tabs on.

Translations

眼睛观察力明眼人注视眼状物

eye

(ai) noun1. the part of the body with which one sees. Open your eyes; She has blue eyes.眼睛2. anything like or suggesting an eye, eg the hole in a needle, the loop or ring into which a hook connects etc. 眼状物3. a talent for noticing and judging a particular type of thing. She has an eye for detail/colour/beauty.观察力 verb to look at, observe. The boys were eyeing the girls at the dance; The thief eyed the policeman warily.注视ˈeyeball noun1. the whole rounded structure of the eye. 眼球2. the part of the eye between the eyelids. 眼珠子ˈeyebrow noun the curved line of hair above each eye. 眉毛ˈeye-catching adjective striking or noticeable, especially if attractive. an eye-catching advertisement.引人注目的ˈeyelash noun one of the (rows of) hairs that grow on the edge of the eyelids. She looked at him through her eyelashes.睫毛ˈeyelet (-lit) noun a small hole in fabric etc for a cord etc. 小孔，孔眼 ˈeyelid noun the movable piece of skin that covers or uncovers the eye. 眼睑ˈeye-opener noun something that reveals an unexpected fact etc. Our visit to their office was a real eye-opener – they are so inefficient! 令人大开眼界的事情，令人惊奇的事物 ˈeye-piece noun the part of a telescope etc to which one puts one's eye. 目镜ˈeyeshadow noun a kind of coloured make-up worn around the eyes. 眼影膏ˈeyesight noun the ability to see. I have good eyesight.视力ˈeyesore noun something (eg a building) that is ugly to look at. 丑陋的东西，刺眼的东西 ˈeye-witness noun a person who sees something (eg a crime) happen. Eye-witnesses were questioned by the police. 目击者，见证人 before/under one's very eyes in front of one, usually with no attempt at concealment. It happened before my very eyes. 当某人面前，就在 ... 眼前 be up to the eyes in to be very busy or deeply involved in or with. She's up to the eyes in work.埋头于close one's eyes to to ignore (especially something wrong). She closed her eyes to the children's misbehaviour.视而不见in the eyes of in the opinion of. You've done no wrong in the eyes of the law.在...看来keep an eye on1. to watch closely. Keep an eye on the patient's temperature.密切注意2. to look after. Keep an eye on the baby while I am out! 留意，照看 lay/set eyes on to see, especially for the first time. I wish I'd never set eyes on her!看到raise one's eyebrows to (lift one's eyebrows in order to) show surprise. 竖起眉毛（表示惊异） see eye to eye to be in agreement. We've never seen eye to eye about this matter.看法完全一致with an eye to something with something as an aim. He's doing this with an eye to promotion.着眼于with one's eyes open with full awareness of what one is doing. I knew what the job would involve – I went into it with my eyes open.警惕地

eye

→ 眼睛zhCN

I have something in my eye → 我眼睛里进东西了

eye

eye,

organ of visionvision,
physiological sense of sight by which the form, color, size, movements, and distance of objects are perceived. Vision in Humans

The human eye functions somewhat like a camera; that is, it receives and focuses light upon a photosensitive receiver, the retina.
..... Click the link for more information. and light perception. In humans the eye is of the camera type, with an iris diaphragm and variable focusing, or accommodation. Other types of eye are the simple eye, found in many invertebrates, and the compound eye, found in insects and many other arthropods. In an alternate pathway to the one that transmits visual images, the eye perceives sunlight. This information stimulates the hypothalamus, which passes the information on to the pineal gland. The pineal gland then regulates its production of the sleep-inducing chemical, melatonin, essentially setting the body's circadian clock (see rhythm, biologicalrhythm, biological,
or biorhythm,
cyclic pattern of physiological changes or changes in activity in living organisms, most often synchronized with daily, monthly, or annual cyclical changes in the environment.
..... Click the link for more information. ).

The Human Eye

Anatomy and Function

The human eye is a spheroid structure that rests in a bony cavity (socket, or orbit) on the frontal surface of the skull. The thick wall of the eyeball contains three covering layers: the sclera, the choroid, and the retina. The sclera is the outermost layer of eye tissue; part of it is visible as the "white" of the eye. In the center of the visible sclera and projecting slightly, in the manner of a crystal raised above the surface of a watch, is the cornea, a transparent membrane that acts as the window of the eye. A delicate membrane, the conjunctiva, covers the visible portion of the sclera.

Underneath the sclera is the second layer of tissue, the choroid, composed of a dense pigment and blood vessels that nourish the tissues. Near the center of the visible portion of the eye, the choroid layer forms the ciliary body, which contains the muscles used to change the shape of the lens (that is, to focus). The ciliary body in turn merges with the iris, a diaphragm that regulates the size of the pupil. The iris is the area of the eye where the pigmentation of the choroid layer, usually brown or blue, is visible because it is not covered by the sclera. The pupil is the round opening in the center of the iris; it is dilated and contracted by muscular action of the iris, thus regulating the amount of light that enters the eye. Behind the iris is the lens, a transparent, elastic, but solid ellipsoid body that focuses the light on the retina, the third and innermost layer of tissue.

The retina is a network of nerve cells, notably the rods and cones, and nerve fibers that fan out over the choroid from the optic nerve as it enters the rear of the eyeball from the brain. Unlike the two outer layers of the eye, the retina does not extend to the front of the eyeball. Between the cornea and iris and between the iris and lens are small spaces filled with aqueous humor, a thin, watery fluid. The large spheroid space in back of the lens (the center of the eyeball) is filled with vitreous humor, a jellylike substance.

Accessory structures of the eye are the lacrimal gland and its ducts in the upper lid, which bathe the eye with tearstears,
watery secretion of the lacrimal gland, which is located at the outer corner of the eye socket immediately above the eyeball. Tearing, or lacrimation, is a continuous and largely involuntary process stimulated by the autonomic nervous system.
..... Click the link for more information. , keeping the cornea moist, clean, and brilliant, and drainage ducts that carry the excess moisture to the interior of the nose. The eye is protected from dust and dirt by the eyelashes, eyelid, and eyebrows. Six muscles extend from the eyesocket to the eyeball, enabling it to move in various directions.

Eye Disorders

In addition to errors of refraction (astigmatismastigmatism
, type of faulty vision caused by a nonuniform curvature in the refractive surfaces—usually the cornea, less frequently the lens—of the eye. As a result, light rays do not all come to a single focal point on the retina.
..... Click the link for more information. , farsightednessfarsightedness
or hyperopia,
condition in which far objects can be seen easily but there is difficulty in near vision. It is caused by a defect of refraction in which the image is focused behind the retina of the eye rather than upon it, either because the eyeball is
..... Click the link for more information. , and nearsightednessnearsightedness
or myopia,
defect of vision in which far objects appear blurred but near objects are seen clearly. Because the eyeball is too long or the refractive power of the eye's lens is too strong, the image is focused in front of the retina rather than upon it.
..... Click the link for more information. ), the human eye is subject to various types of injury, infection, and changes due to systemic disease. Strabismus is a condition in which the eye turns in or out because of an imbalance in the eye musculature. A cornea damaged by accident or illness can sometimes be corrected by excimer laser or surgically replaced with a healthy one from a deceased person. Experimental retinal implants, consisting of electrode arrays that receive visual data from an external camera, have been used to partially restore sight to persons with damaged retinas, enabling some recognition of shapes, light and dark areas, and motion. Eyes that are used in various ways for surgical repairs are supplied by eye banks. People can arrange to have their eyes donated to such organizations after their death.

Eyes in Other Animals

The camera type of eye, which forms excellent images, is found in all vertebrates, in cephalopods (such as the squid and octopus), and in some spiders. In each of those groups the camera type of eye evolved independently. In some species, e.g., kestrels, the eye can perceive ultraviolet light, an aid to tracking prey.

Simple eyes, or ocelli, are found in a great variety of invertebrate animals, including flatworms, annelid worms (such as the earthworm), mollusks, crustaceans, and insects. An ocellus has a layer of photosensitive cells that can set up impulses in nerve fibers; the more advanced types also have a rigid lens for concentrating light on this layer. Simple eyes can perceive light and dark, enabling the animal to perceive the location and movement of objects. They form no image, or a very poor one.

The compound eye is found in a large number of arthropods, including various species of insects, crustaceans, centipedes, and millipedes. A compound eye consists of from 12 to over 1,000 tubular units, called ommatidia, each with a rigid lens and photosensitive cells; each omnatidium is surrounded by pigment cells and receives only the light from its own lens. The lenses fit together on the surface of the eye, forming the large, many-faceted structure that can be seen, for example, in the fly. Each ommatidium supplies a small piece of the image perceived by the animal. The compound eye creates a poor image and cannot perceive small or distant objects; however, it is superior to the camera eye in its ability to discriminate brief flashes of light and movement, and in some insects (e.g., bees) it can detect the polarization of light. Because arthropods are so numerous, the compound eye is the commonest type of animal eye.

Eye (invertebrate)

An aggregation of photoreceptor cells together with any associated optical structures. Eyes occur almost universally among animals, and are possessed by some species of virtually every major animal phylum. However, the complexity of eyes varies greatly, and this sense organ undoubtedly evolved independently a number of times within the animal kingdom.

The simplest invertebrate organs that might be considered to be eyes are clusters of photoreceptor cells located on the surface of the body. Pigment cells are usually interspersed among the photoreceptors, giving the eye a red or black color. Accessory structures, such as the lens and cornea, are usually absent. Simple eyes of this type, called pigment spot ocelli, are found in such invertebrates as jellyfish, flatworms, and sea stars.

The most basic image-forming type of invertebrate eye probably arose from such patches of photoreceptor cells by an in-sinking of the sensory epithelium to form a cup, which may have become closed in conjunction with the evolution of a cornea and lens. Such an evolutionary history is clearly suggested by the embryology and comparative anatomy of many invertebrates.

In bilateral cephalic invertebrates, the eyes are typically paired and located at the anterior end of the body. Although one pair is usual, as in mollusks and many arthropods, multiple pairs are not uncommon. Some polychaete annelids have 4 eyes, and scorpions may have as many as 12. The greatest number of eyes is found in marine flatworms, where there may be over 100 ocelli scattered over the dorsal anterior surface and along the sides of the body. The occurrence of eyes on parts of the body other than the head is usually correlated with radial symmetry or unusual modes of existence.

The primitive function of animal eyes was merely to provide information regarding the intensity, direction, and duration of environmental light. The perception of objects is dependent upon several factors, namely, the number of photoreceptors in the retina, the quality of the optics, and central processing of visual information.

Image formation has evolved as an additional capacity of the eyes of some invertebrates. The number of photoreceptor cells composing the retinal surface is of primary importance, since each photoreceptor cell or group of cells acts as the detector for one point of light. An image is formed by the retina through the association of points of light of varying intensity, much as an image is produced by an array of pixels on a computer monitor. The ability of an eye to form an image and the coarseness or fineness of the image are, therefore, dependent upon the number of points of light that are distinguished which, in turn, is dependent upon the number of photoreceptor cells composing the retina. A large number of photoreceptor cells must be present to produce even a coarse image. The great majority of invertebrate eyes cannot form a detailed image because they do not possess a sufficient number of photoreceptor cells. The number of photoreceptor cells might be sufficient to detect movement of an object, but is inadequate to provide much information about the object's form. See Photoreception

The focusing mechanisms of invertebrate eyes vary considerably. The focus of arthropod eyes tends to be fixed, that is, the distance between the optical apparatus and the retina cannot be changed. Thus objects are in focus only at a certain distance from the eye, determined by the distance between the lens and the retina.

The oceanic family of swimming polychaete worms, Alciopidae, have eyes of that are focused hydrostatically. A bulb to one side of the eye injects fluid into the space between the retina and the lens, forcing the lens outward. Another mechanism is employed in octopods whereby lens movement is brought about by a ciliary muscle attached to the lens (as in aquatic vertebrates, like fish).

The compound eye of crustaceans, insects, centipedes, and horseshoe crabs has a sufficiently different construction from that of other invertebrates to warrant separate discussion. The structural unit of the compound eye is called an ommatidium (see illustration). The outer end of the ommatidium is composed of a cornea, which appears on the surface of the eye as a facet. Beneath the cornea is an elongated, tapered crystalline cone; in many compound eyes the cornea and cone together function as a lens. The receptor element at the inner end of the ommatidium is composed of one or more central translucent cylinders (rhabdome), around which are located several photoreceptor cells (typically 7 or 8).

Eye

the organ of reception of light stimulation in some invertebrate animals (in particular, cephalopod mollusks), in all vertebrates, and in man. In the majority of invertebrates, the functions of the eye are performed by less complex organs of sight, such as faceted eyes. In vertebrates the eyes are paired and are located in the eye sockets of the skull, the orbits. The eyes consist of the eye itself, or the eyeball, which is connected by means of the optic nerve to the brain, and accessory parts of the eye, including the eyelid, the lacrimal apparatus, and the oculomotor muscles. One type of eye structure is common to all vertebrate animals.

The eyeball is spherical in shape. The central point of the anterior surface is called the anterior pole of the eye; the point located on the posterior surface at the place where the optic nerve departs is called the posterior pole. The line between the poles is considered the anatomic axis; it coincides with the geometric axis. Located in the anterior, light-exposed portion of the eye is the dioptric (light-refractive) apparatus (the system of refractive media, including the cornea; the transparent biconvex lens, or crystalline lens; the aqueous humor; the vitreous body, which fills the eye cavity; the ciliary body, which serves for accommodation; and the iris), which transmits the image to the photosensitive retina.

The wall of the posterior portion of the eyeball consists of three membranes, which lie very close to one another. The dense exterior membrane—the sclera—is supportive and protective; it gives the eye its shape, as though it were its skeleton. On the anterior, open portion of the eye, the sclera becomes the thin and transparent cornea. Under the sclera is the vascular tunic, which is abundantly supplied with blood vessesls; the anterior portion of the vascular tunic, in the form of a thin film, forms the iris, which has an opening in the middle—the pupil. In the tissue of the iris of most vertebrates there are special muscles, the dilator and the sphincter, which regulate the entry of light rays into the eye by dilating and contracting the pupil; the iris thus performs the role of a diaphragm. Eye color depends on the pigmentation of the iris, which contains pigmentary cells—chromatophores—and shows through the transparent cornea. If the chromatophores are absent or the external layer of the retina lacks pigment, the blood vessels of the vascular tunic show through the iris and the eyes have a red color. The color of the iris sometimes changes according to the age, sex and habitat of an animal (dark eye color in many young birds and light in old ones, or milk-white color of the iris in young ones and orange-yellow in old ones, such as in the goshawk). Behind the iris lies the ciliary body, an annular ridge containing muscle fibers. Suspended to it by means of the fibers of the zonule of Zinn is the capsule of the crystalline lens. In the majority of vertebrates contraction of the ciliary body causes a change in the curvature of the crystalline lens, that is, accommodation (adaptation of the eye to distant or close vision takes place). The internal photosensitive membrane of the eye is the retina. Near the posterior pole of the eye is the yellow spot (macula lutea); somewhat closer to the midline is an area that lacks sensitivity to light—the blind spot. The nerve fibers of the entire retina are gathered at this place in the form of the optic nerve, which continues farther into the cerebrum. The eye has a number of characteristic features in different classes of vertebrates. In fish the eye is characterized by a flat cornea and a spherical lens. A special sickle-shaped process protrudes into the eye cavity from the vascular tunic; it contains smooth muscle fibers, which are attached to the capsule of the crystalline lens. Thus, eye accommodation in fish is accomplished by displacement of the lens. The posterior wall of the vascular tunic often contains a special layer of cells filled with tiny crystals of light pigment, the so-called silver membrane. In some fish there is a luminous layer—the mirror (tapetum), which reflects light rays back onto the retina, causing seeming luminescence of the eyes of certain fish in almost complete darkness (such as in sharks). In some deep-sea fish the eyes have atrophied, and in others they are huge and telescopic and are well adapted to capture the faint light of underwater depths. In the four-eyed fish the pupils are extended vertically; the cornea is divided by a horizontal strip into upper and lower divisions. When the fish swims on the surface, the upper portion of the eye is able to survey the air medium and the lower portion, the water medium.

In amphibians the cornea is distinguished by great convexity. The musculature of the iris and ciliary body is poorly developed; eye accommodation is accomplished by displacement of the crystalline lens with the aid of a special muscle that draws the lens forward to the cornea and also by pressure exerted by the retinal muscle.

In reptiles, except for the tuatara and tortoises, and in birds, except for the kiwi, a characteristic process abundantly supplied with blood vessels—the pectén—protrudes into the vitreous body from the point of entry of the optic nerve. The visual apparatus of birds is in many respects superior to that of other animals. Because of the eyeball’s very large dimensions and unique structure the field of vision is increased. In birds that have especially keen sight (vultures and eagles) the eyeball has an elongated “telescopic” shape. The retina contains up to three yellow spots.

The shape of the mammalian eye approaches that of amphibians. In aquatic mammals (such as whales) the convexity of its cornea and the magnitude of its refractive index is reminiscent of the eye of deep-sea fish. In Carnivora, Pinnipedia, and Cetácea the interior surface of the vascular tunic of the eye forms, as it does in a number of fish, a luminous pigmentary layer—the mirror.

Eyes that have atrophied are found in cave fish and amphibians (for example, the Proteidae family); in mammals that live underground (such as moles) they are characteristically placed deep under the skin or they lack a lens, an iris, and several layers of retina.

Human eye. The human eye consists of an eyeball (the eye itself), connected by the optic nerve to the brain, and the auxiliary apparatus (eyelids, lacrimal organs, and muscles that move the eyeball). The shape of the eyeball is that of a not entirely regular sphere; the anterior-posterior distance in an adult averages 24.3 mm, the vertical distance 23.4 mm, and the horizontal 23.6 mm; the dimensions of the eyeball may be larger or smaller, which is significant in the formation of the refractive ability of the eye. The walls of the eye consist of three concentric tunics—the exterior, middle, and interior. They surround the contents of the eyeball—the crystalline lens, vitreous body, and intraocular fluid (aqueous humor).

The exterior tunic of the eye is the opaque sclera, or the white, which occupies five-sixths of its surface; in its anterior section it joins the transparent cornea. Together they form the corneoscleral capsule of the eye, which, being the toughest and most resilient exterior part of the eye, performs a protective function and forms a sort of skeleton for the eye. The sclera is formed of dense connective-tissue fibers; its average thickness is approximately 1 mm. The sclera is extremely thin in the region of the posterior pole of the eye, where it turns into a cribriform plate, through which pass the fibers that form the optic nerve of the eye. In the anterior portion of the sclera almost at the junction of its transition to the corneal membrane lies a circular sinus, the so-called canal of Schlemm (named after the German anatomist who first described it, F. Schlemm), which participates in the efflux of intraocular fluid. The front of the sclera is covered with a thin mucous membrane, the conjunctiva, which posteriorly goes to the interior surfaces of the upper and lower lids. The corneal surface is anteriorly convex and posteriorly concave; its thickness at the center is approximately 0.6 mm and at the periphery, up to 1 mm. In optical properties the cornea is the strongest refracting medium of the eye. It is also a sort of window through which light rays enter the eye. There are no blood vessels in the cornea; it is nourished by diffusion from the vascular network located at the junction between it and the sclera. Owing to the numerous nerve endings disposed in the surface layers of the cornea, it is the most sensitive external part of the body. Even a light touch elicits a reflexive instantaneous closing of the eyelids, which prevents foreign bodies from reaching the cornea and shields it from heat and cold injury. Immediately behind the cornea is the anterior chamber of the eye; this chamber is a space filled with transparent fluid, the so-called chamber humor, the chemical composition of which is close to that of cerebrospinal fluid. The anterior chamber has a central (average depth, 2.5 mm) and a peripheral division—the latter being the angle of the anterior chamber. In this division lies a formation consisting of interwoven fibrous membranes, with tiny openings through which filtration of the chamber fluid into the canal of Schlemm takes place; from there it goes into the venous plexi located in the mass and on the surface of the sclera. Owing to the efflux of chamber humor, intraocular pressure is kept at a normal level.

The iris is the posterior wall of the anterior chamber; in its center is the pupil, a round opening approximately 3.5 mm in diameter. The iris is spongy in structure and contains pigment; depending on the quantity of the pigment and the thickness of the membrane, the eye may be dark (black, brown) or light (grey, blue) in color. Also in the iris are two muscles that dilate and contract the pupil, which plays the role of a diaphragm in the optical system of the eye—in the light it narrows (direct reaction to light), shielding the eye from strong light stimulation, and in the dark it dilates (inverse reaction to light), permitting the eye to capture very faint light rays. The iris gives rise to the ciliary body, which secretes intraocular fluid and which consists of a plicated anterior portion, called the corona of the ciliary body, and a flat posterior portion. In the plicated portion are found processes to which are attached thin ligaments, which then go to the crystalline lens and form its suspensory apparatus. In the ciliary body an involuntary muscle is located, which participates in eye accommodation. The flat part of the ciliary body becomes the vascular tunic proper, which lies close to almost the entire interior surface of the sclera and consists of blood vessels of various diameters, which contain approximately 80 percent of the blood entering the eye. The iris, the ciliary body, and the vascular tunic together make up the middle tunic of the eye, which is called the vascular tract.

The interior tunic of the eye—the retina—is the receptor apparatus of the eye. Anatomically, the retina consists of ten layers, the most important of which is the layer of visual cells, which consists of light-receptor cells, rods and cones, that effect color perception. In these cells occurs the transformation of the physical energy of the light rays entering the eye into a nerve impulse, which is transmitted along the path of the optic nerve to the occipital portion of the brain, where the visual image is formed. Located in the center of the retina is the region of the yellow spot, which is necessary for the most delicate and differentiated vision. In the forward half of the retinal membrane, approximately 4 mm from the yellow spot, is the exit point of the optic nerve, which forms a disk 1.5 mm in diameter. From the center of the disk emerge blood vessels—an artery and a vein—that branch out and are distributed over almost the entire surface of the retinal membrane. The eye cavity is filled by the crystalline lens and the vitreous body.

The lenticular crystalline lens, one of the parts of the dioptric apparatus of the eye, is located immediately behind the iris; between its anterior surface and the posterior surface of the iris is a slitlike space—the posterior chamber of the eye; like the anterior chamber, it too is filled with aqueous humor. The crystalline lens consists of a sac formed by the anterior and posterior capsules, inside of which are enclosed fibers layered one upon another. There are no blood vessels or nerves in the crystalline lens. The vitreous body, a colorless, gelatinous mass, occupies a large portion of the eye cavity. Anteriorly it lies next to the lens and laterally and posteriorly, next to the retinal membrane. Movements of the eyeball are made possible by an apparatus, which consists of four straight and two oblique muscles that originate from the fibrous ring at the top of the orbit and, spreading fanlike, are interwoven into the sclera. Contractions of certain eye muscles or of groups of them provide for coordinated eye movements.

L. A. KATSNEL’SON

In anthropology the width of the palpebral fissure of the eye (the distance between the lids), its slant, and the color of the iris are taken into account. In Mongoloids the palpebral fissure is narrow and the outer corner of the eye is noticeably higher than the inner, due to the great development of the epicanthus. The palpebral fissure of Caucasians is horizontal and of medium width and that of the negroid races is wide. The color of the iris depends on the quantity of pigment and the depth of its deposit; this determines the type of coloring: dark (dark-brown, light-brown, or yellow), mixed (brown-yellow-green, green, gray-green, or gray with a yellow rim around the pupil), or light (gray, gray-blue, light-blue, or blue). Dark-pigmented races have principally dark eyes; Caucasians have a large percentage of light-colored and mixed eyes. Sex and age variations are insignificant regarding the color of the iris; with age there is only a decrease in pigmentation.

T. D. GLADKOVA

What does it mean when you dream about eyes?

Eyes have many associations, and thus constitute a difficult symbol to interpret. Eyes are associated with wisdom, knowledge, enlightenment, perceptiveness, and gods and goddesses. Eyes may also be crossed, blinded, or half-shut. Certain kinds of glances are revelatory (“she looked right through me”); others are dangerous (“if looks could kill,” “the evil eye”).

eye

[ī] (food engineering) A hole formed in certain cheeses during ripening, such as in swiss cheese. (zoology) A photoreceptive sense organ that is capable of forming an image in vertebrates and in some invertebrates such as the squids and crayfishes.

eye

1. The central roundel of a pattern or ornament. 2. The circular (or nearly circular) central part of a volute, as in an Ionic capital. 3. One of the smaller, more or less triangular, openings between the bars of Gothic tracery. 4. An oculus, esp. one at the summit of a dome. 5. A hole through material for access, to permit the passage of a pin, or to serve as a means of attachment.

eye

i. The portion of a centrifugal compressor through which fluid enters.
ii. The center of a cyclone where calm prevails. This is an area where there is no rising air but descending currents may be present. The eye averages 14 mi in diameter, with no precipitation, very light winds, and sometimes a clear sky and complete calm.

eye

God sees all things in all places. [Christian Symbolism: O.T.: Proverbs 15:3]See: Omnipresence

eye

1. the organ of sight of animals, containing light-sensitive cells associated with nerve fibres, so that light entering the eye is converted to nervous impulses that reach the brain. In man and other vertebrates the iris controls the amount of light entering the eye and the lens focuses the light onto the retina 2. the visible external part of an eye, often including the area around it 3. a structure or marking having the appearance of an eye, such as the bud on a twig or potato tuber or a spot on a butterfly wing 4. a small area of low pressure and calm in the centre of a tornado or cyclone 5. See photocell6. the eye of the wind Nautical the direction from which the wind is blowing

Eyes

(dreams)Eyes are complex dream symbols and can be interpreted by considering the dreamer’s experiences and the details in the dream (as is the case with all dream symbols). Some say that the eyes are the windows to the soul. Eyes symbolize perceptiveness, personal outlook, clairvoyance, curiosity, and knowledge. They also reveal information about personal identity and suggest to the dreamer what he should pay attention to. Closed eyes are said to represent fear and an unwillingness to see clearly. Superstition-based dream interpretations say that if the eyes in your dream are beautiful they represent peace. Crossed eyes may be an unconscious warning about someone’s character, integrity, or misperceptions.

See eye

eye

eye

eye

eye

eye

eye

Eye, Nye

Eye(s)

eye

eye

eye

Parts of the eye

eye

eye

eye

eye

eye

eye,

The Human Eye

Anatomy and Function

Eye Disorders

Eyes in Other Animals

Eye (invertebrate)

Eye

What does it mean when you dream about eyes?

eye

eye

eye

eye

eye

Eyes

eye

eye

eye

eye

eye

eye

Anatomy

Physiology

Patient care

CAUTION!

aphakic eye

artificial eye

black eye

Treatment

contact lens–induced red eye

crossed eye

dark-adapted eye

dominant eye

dry eye

exciting eye

false eye

fixating eye

glass eye

Klieg eye

lazy eye

light-adapted eye

squinting eye

sympathizing eye

eye

eye

eye

Patient discussion about eye

EYE

eye

Synonyms for eye

noun eyeball

Synonyms

noun eyesight

Synonyms

noun appreciation

Synonyms

noun observance

Synonyms

noun centre

Synonyms

verb look at

Synonyms

phrase an eye for an eye

Synonyms