Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Iris of the eye


Related Topics

In the News (Fri 5 Dec 08)

  
  The Iris
The iris, visible through the clear cornea as the colored disc inside the eye, is a thin diaphragm composed mostly of connective tissue and smooth muscle fibers.
The iris divides the anterior compartment, the space separating the cornea and the lens, into the anterior chamber (between the cornea and the iris) and the posterior chamber (between the iris and the lens).
Anatomical structures posterior to the iris, which also are part of the uvea, are the ciliary body (within which is the ciliary muscle which controls the shape of the crystalline lens) and the choroid (located underneath the retina and which contains the retina’s blood supply).
www.tedmontgomery.com /the_eye/iris.html   (1053 words)

  
  Eye - Wikipedia, the free encyclopedia
In most vertebrates and some mollusks the eye works by allowing light to enter it and project onto a light-sensitive panel of cells retina at the rear of the eye, where the light is detected and signals are transmitted to the brain via the optic nerve.
Such eyes are typically roughly spherical, filled with a transparent gel-like substance called the vitreous humour, with a focusing lens and often an iris which regulates the intensity of the light that enters the eye.
However, the development of the eye is considered to be monophyletic; that is, all modern eyes, varied as they are, have their origins in a proto-eye believed to have evolved some 540 million years ago (Mya).
en.wikipedia.org /wiki/Eye   (5139 words)

  
 Iris of The Eye   (Site not responding. Last check: 2007-11-03)
The iris is a thin diaphragm composed mostly of connective tissue and smooth muscle fibers that is seen from the outside as the colored portion of the eye.
It extends forward from the periphery of the ciliary body and lies between the cornea and the lens.
The iris divides the space separating these parts, which is called the "anterior cavity," into an "anterior chamber" (between the cornea and the iris) and a "posterior chamber" (between the iris and the lens).
www.innerbody.com /text/nerv106.html   (80 words)

  
 Encyclopedia: Eye   (Site not responding. Last check: 2007-11-03)
The aqueous humour is the clear, watery fluid that fills the complex space in the front of the eye which is bounded at the front by the cornea and at the rear by the front surface or face of the vitreous humour.
Iris has three main meanings, unrelated except for their derivation from the Greek word for rainbow: Iris (mythology), a messenger of the gods in Greek mythology, identified with the rainbow Iris (anatomy), the sphincter around the pupil of the eye, named for the color in human and animal eyes Iris...
Eye - Optic nerve - Optic chiasm - Optic tract - Lateral geniculate nucleus - Optic radiations - Visual cortex (See also sense) A sensory system is a part of the nervous system that consists of sensory receptors, neural pathways, and those parts of the brain responsible for processing the information.
www.nationmaster.com /encyclopedia/Eye   (11018 words)

  
 Red-eye effect - Wikipedia, the free encyclopedia
The flash light is focused by the lens of the eye onto the blood-rich retina at the back of the eye and the image of the illuminated retina is again focussed by the lens of the eye back to the camera resulting in a red appearance of the eye on the photo.
Retinoblastoma is a cancer of the eye that often causes the appearance of a "white eye" effect instead of the expected red eye.
The light enters the eye in a direction away from the optical axis of the camera and is refocused by the eye lens back along the same axis.
en.wikipedia.org /wiki/Red-eye_effect   (782 words)

  
 Iris - eye anatomy
The round opening in the center of the iris is called the pupil.
The iris is embedded with tiny muscles that dilate (widen) and constrict (narrow) the pupil size.
The iris is flat and divides the front of the eye (anterior chamber) from the back of the eye (posterior chamber).
www.stlukeseye.com /anatomy/Iris.asp   (153 words)

  
 Eye Disorders including cataracts, Lasik eye surgery, blindness, glaucoma and eye allergy
The eye consists of the eyeball, the upper and lower eyelids, and the conjunctivas.
The eyeball consists of a clear, transparent dome at the front (the cornea) that is surrounded by the white of the eyeball (the sclera).
The iris of the eye is the circular, colored portion within the eyeball and behind the cornea, and the pupil is the central opening within the iris.
www.medicinenet.com /eyesight/focus.htm   (270 words)

  
 The Genetics of Human Eye Color   (Site not responding. Last check: 2007-11-03)
A favorite pastime for many expectant parents is documenting the eye color of grandparents and extended family members to attempt to predict the eye color of their baby.
In basic terms, eye color is determined by the amount of a pigment called melanin that is in the iris of the eye.
The exact color of the human eye is determined by the amount of a single pigment called melanin that is present in the iris of the eye.
www.seps.org /cvoracle/faq/eyecolor.html   (1333 words)

  
 Colored contact lens and methods of making the same - Patent 5018849
The iris portion reduces or otherwise alters the reflection color of the eye and mimics the structure of the natural iris so that the tinted color becomes the dominant color when the lens is worn.
The iris portion 14 is a replica of the human iris.
The iris masking section 28 is preferably circular in shape and is positioned in such a manner as to cover the natural iris of the eye of the wearer when the pupil portion 12 of the lens 10 is over the pupil.
www.freepatentsonline.com /5018849.html   (2071 words)

  
 EYE FLIGHT: IRIS SCAN FOR JFK PASSENGERS
The airport will be home to a new pilot program that uses high-tech eye scans to speed pre-registered passengers through security and customs checkpoints.
With the success of the fingerprinting program at the borders — known as US-VISIT — and now the launch of the iris scanning, Ridge is urging the United States to rely more heavily on biometrics rather than paper documents to assure a person's identity.
Ridge assured personal-privacy hawks that the fingerprints and iris records will be tightly guarded — a designated homeland security official will be assigned to make sure the information doesn't fall into the wrong hands, he said.
www.infowars.com /articles/bb/iris_scans_jfk.htm   (567 words)

  
 Eye Anatomy: Iris and Pupil   (Site not responding. Last check: 2007-11-03)
The iris is the part of the eye that identifies your eye color, and is shaped like a flat donut.
The reason why their eyes appear pink is that the light reflects off the back of the eye, where blood vessels are, making them reddish-pink in appearance.
This is because the eyes do not like abrupt changes in light, and therefore, has the iris to constrict to allow less light in.
www.longviewvision.com /anatomy/pupiliris.htm   (307 words)

  
 7 Iris -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-11-03)
It was the seventh (Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)) asteroid discovered, on August 13, 1847 by (Click link for more info and facts about J. Hind) J.
Hind from (The capital and largest city of England; located on the Thames in southeastern England; financial and industrial and cultural center) London, (A monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland) UK.
Iris was observed (Click link for more info and facts about occulting) occulting a ((astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior) star on May 26, 1995 and later on July 25, 1997.
www.absoluteastronomy.com /encyclopedia/7/7/7_iris.htm   (217 words)

  
 Science News: Iris Scan- Eye on Security
Iris scanning takes advantage of random variations in the visible features the iris, the colored part of the eye.
The details of each iris are phenotypically unique, that is, no two are exactly alike, not even among twins, not even in your own two eyes.
The structure of the iris develops in the embryo, assuming its lifelong character by the seventh or eighth month.
www.accessexcellence.org /WN/SU/SU102001/irisscan.html   (809 words)

  
 Iridology   (Site not responding. Last check: 2007-11-03)
Eye analysis is a method whereby a trained iridologist or health practitioner can reveal through markings or signs in the iris reflex conditions of various organs and systems of the body.
The iris reveals body constitution, inherent weaknesses, levels of health and transitions that take place in a person's body according to the way he or she lives.
The iris can indicate problems before disease symptoms are present and with the information compiled a health program can be developed and tailored to each person, thus preventing the manifestation of disease.
www.orbit4health.com /iridology.html   (344 words)

  
 Essential Iris Atrophy
Essential iris atrophy is a very rare, progressive disorder of the eye characterized by a pupil that is out of place and/or distorted, areas of degeneration on the iris (atrophy), and/or holes in the iris.
Attachment of portions of the iris to the cornea (peripheral anterior synechiae) and/or abnormalities in the cornea may lead to secondary glaucoma and vision loss.
Essential iris atrophy is one of three iridocorneal endothelial (ICE) syndromes, each of which usually affects one eye of young to middle-aged men and women.
my.webmd.com /hw/health_guide_atoz/nord129.asp   (454 words)

  
 The Mavens' Word of the Day   (Site not responding. Last check: 2007-11-03)
I happened to pass a billboard with the word iris and began to wonder about the relationship of the word for the flower iris to the word for the part of the eye iris.
The origin is Greek, the progenitor is the Greek goddess Iris, a messenger of the gods.
The iris of the eye is, as we all know, the colored part around the pupil.
www.randomhouse.com /wotd/index.pperl?date=20010927   (348 words)

  
 Iris. (from eye) --  Britannica Student Encyclopedia
The color of the iris is inherited and does not affect vision.
The iris is like a muscular curtain that opens and closes.
It controls the amount of light entering the eye through the pupil, an opening in the iris.
www.britannica.com /ebi/article-200129?tocId=200129&ct=   (71 words)

  
 Iridology explained in easy to understand terms. Iridology is the study of the Iris of the eye.
Iridology is the study of the Iris of the eye.
When there are impurities or foreign particles in the blood, they are carried and deposited in the iris of the eye.
The reading of the iris by a competent Iridologist is very accurate and accompanying questions can often tell what is going on in the body even before symptoms start.
www.marysherbs.com /heal/heal-iri.htm   (865 words)

  
 Forensic Evidence.com: Identification Evidence/Personal Identification by the Iris of the Eye
Like other biometric devices, iris recognition systems act primarily as a screening tool to allow or deny access to a particular place, rather than as a law enforcement tool to track down suspected criminals, as are DNA and fingerprints.
Iris identification systems, like many other less imposing biometric devices, are used to screen individuals who are trying to gain access to more highly secure places or accounts, not to scan the general public at random.
As a trial-run, 2,000 American and Canadian passengers, who previously had their iris' scanned at the airport, are allowed to proceed to a special line in the passport control area of the airline terminal to have their identity quickly and accurately verified by an iris reading camera.
www.forensic-evidence.com /site/ID/ID_iris_jarvis.html   (995 words)

  
 The "Eye of God" in Total Solar Eclipses - Part 1   (Site not responding. Last check: 2007-11-03)
eye is essentially a hole in the eye via which light is transmitted to the cones and rods
that it was an eye, in fact very few of those asked responded that the subject of the photograph was the total eclipse of the sun.
solar eclipse to be a divine celestial eye.
eyeofgod.homestead.com /eyeofgod1.html   (4044 words)

  
 Iris recognition.
Because the iris is a protected internal organ whose random texture is stable throughout life, it can serve as a kind of living passport or a living password that one need not remember but can always present.
Because the randomness of iris patterns has very high dimensionality, recognition decisions are made with confidence levels high enough to support rapid and reliable exhaustive searches through national-sized databases.
Iris recognition is forecast to play a role in a wide range of other applications in which a person's identity must be established or confirmed.
www.cl.cam.ac.uk /users/jgd1000/iris_recognition.html   (532 words)

  
 Langeveld Iris hollandica 'Eye of the Tiger' Bulbs 8 Pack [LANGE20107811E] at www.CapitalGardens.co.uk
This is one of the most cold-resistant variety of the Dutch Iris.
Plant Dutch Iris bulbs in 10 to 14 day intervals to enjoy a continuous supply of cut flowers.
In cold areas the Iris should be mulched in winter to protect from frost.
www.capitalgardens.co.uk /v3/iris-hollandica-tiger-bulbs-p-9628.html   (166 words)

  
 PC VIDEO GAME REVIEWS... Curse: The Eye of Iris __________|
Curse: The Eye of Iris is a game that attempts to be Resident Evil, but falls just short.
Curse: The Eye of Iris is a survival horror game that pretty much fits the style set by others in the genre.
Because of this, it doesn't give PC gamers the feel and style they are use to, and survival horror fans (who typically aren't the biggest PC gamers) end up having to deal with too many buttons and an unfamiliar control system.
www.gamevortex.com /gamevortex/rn_curse.html   (760 words)

  
 What is Rayid?   (Site not responding. Last check: 2007-11-03)
Throughout the ages, the eyes have been known as the windows to the soul, and modern behavioral research is proving this adage to be true.
The structure of the iris is a reflection of the individual’s life potential, revealing character strengths, as well as aspects of the personality that are underdeveloped.
Rayid uses the iris of the eye to affirm and strengthen the innate character of the individual.
www.rayid.com /main/whatis.htm   (714 words)

  
 CBC News:Safety in the blink of an eye   (Site not responding. Last check: 2007-11-03)
CBC News:Safety in the blink of an eye
Iris recognition technology was pioneered in the mid-'90s.
The technology examines the unique patterns of the iris, the coloured ring around the pupil of the eye.
www.cbc.ca /stories/2002/09/24/Consumers/irisscans_020924   (436 words)

  
 Keratitis
Keratitis is an inflammation of the cornea, the transparent membrane that covers the colored part of the eye (iris) and pupil of the eye.
This condition is characterized by clouding and deep, disc-shaped swelling of the cornea and by inflammation of the iris.
An eye disease characterized by an increase of pressure in the eye.
www.healthatoz.com /healthatoz/Atoz/ency/keratitis.jsp   (1397 words)

  
 About IRIS
Search the IRIS Database for funding opportunities in every field from agriculture to zoology, or view upcoming deadlines in 25 subject areas.
IRIS offers three Web-based funding and research services: the IRIS Database of federal and private funding opportunities in all disciplines; the IRIS Alert Service; and the IRIS Expertise Service.
The IRIS Expertise Service enables researchers at subscribing institutions to create detailed electronic CVs ("biosketches") and post them to a Web-accessible database for viewing by colleagues at other institutions, program officers at federal and private funding agencies, and private companies.
www.library.uiuc.edu /iris/about.html   (662 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.