Eye
Eyes are organs that detect light and convert it into electro-chemical impulses in neurons. The simplest photoreceptor cells in conscious vision connect light to movement. In higher organisms the eye is a complex optical system which collects light from the surrounding environment, regulates its intensity through a diaphragm, focuses it through an adjustable assembly of lenses to form an image, converts this image into a set of electrical signals, and transmits these signals to the brain through complex neural pathways that connect the eye via the optic nerve to the visual cortex and other areas of the brain. Eyes with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system. Image-resolving eyes are present in molluscs, chordates and arthropods.
Read more about Eye.
Some articles on eye:
... At age nine, he injured his right eye while whittling a slingshot with a knife, permanently blinding him ... Haywood never had his damaged eye replaced with a glass eye when photographed, he would turn his head to show his left profile ...
... The pigment molecules used in the eye are various, but can be used to define the evolutionary distance between different groups, and can also be an aid in determining which are closely related – although ... The eyes of vertebrates usually contain cilliary cells with c-opsins, and (bilaterian) invertebrates have rhabdomeric cells in the eye with r-opsins ... that their ancestors used this pigment in vision, and that remnants survive in the eyes ...
... a thin fold of skin that covers and protects the eye ... The levator palpebrae superioris muscle retracts the eyelid to "open" the eye ... eyelid features a row of eyelashes which serve to heighten the protection of the eye from dust and foreign debris, as well as from perspiration ...
... A version is an eye movement involving both eyes moving synchronously and symmetrically in the same direction ... / gaze down and left Dextrocycloversion - top of the eye rotates to the right Laevocycloversion - top of the eye rotates to the left ...
... In addition to the Flying Eye Hospital, ORBIS operates permanent country offices with local partners in several countries ... focusing on the prevention and treatment of the regions’ most prevalent eye diseases ... to increase their capacity to provide comprehensive, affordable and sustainable eye care services over the long term ...
More definitions of "eye":
- (noun): Good discernment (either with the eyes or as if with the eyes).
Example: "She has an eye for fresh talent"; "he has an artist's eye"
- (noun): An area that is approximately central within some larger region.
Example: "They were in the eye of the storm"
Synonyms: center, centre, middle, heart
- (noun): Attention to what is seen.
Example: "He tried to catch her eye"
- (verb): Look at.
Synonyms: eyeball
Famous quotes containing the word eye:
“... A La Recherche du Temps Perdu is like a beautiful hand with long fingers reaching out to pluck a perfect fruit, without error, for the accurate eye knows well it is growing just there on the branch, while Ulysses is the fumbling of a horned hand in darkness after a doubted jewel.”
—Rebecca West (1892–1983)
“In short, no association or alliance can be happy or stable without me. People can’t long tolerate a ruler, nor can a master his servant, a maid her mistress, a teacher his pupil, a friend his friend nor a wife her husband, a landlord his tenant, a soldier his comrade nor a party-goer his companion, unless they sometimes have illusions about each other, make use of flattery, and have the sense to turn a blind eye and sweeten life for themselves with the honey of folly.”
—Desiderius Erasmus (c. 1466–1536)
“With an eye made quiet by the power
Of harmony, and the deep power of joy,
We see into the life of things.”
—William Wordsworth (1770–1850)