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Topic: Accommodation (eye)

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	Glossary
		Accommodation- (eye focusing) the eye's ability to adjust its focus by the action of the ciliary muscle, which increases the lens focusing power.
		The ability of the eye to accommodate does decrease with age due to the crystalline lens becoming less flexible causing a condition called presbyopia.
		The eyes are filled with fluid which maintains the shape of the eye, supplies it with nutrition and aids in the focusing of light.
	www.pechoptical.com /glossary.htm (5619 words)

	Eye - Psychology Wiki - a Wikia wiki
		In most vertebrates and some mollusks, the eye works by allowing light to enter it and project onto a light-sensitive panel of cells known as the retina at the rear of the eye, where the light is detected and converted into electrical signals, which are then 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.
		The common origin (monophyly) of all animal eyes is now widely accepted as fact based on shared anatomical and genetic features of all eyes; 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.
	psychology.wikia.com /wiki/Eyes (4709 words)

	Accommodation (eye) - Wikipedia, the free encyclopedia
		Accommodation is the process by which the eye increases optical power to maintain a clear image (focus) on the retina.
		The principal focusing ability of the (terrestrial) eye is due to the difference in refractive index between air and the curved cornea, but the variable curvature of the lens allows for an additional adjustment.
		He goes further to explain that it is not sclerosing or stiffening of the crystalline lens that linearly reduces accommodative amplitude, rather that age-related increase in lens diameter reduces the space between ciliary body and lens, linearly reducing the effectivity of the ciliary body's effect on lens dynamics.
	en.wikipedia.org /wiki/Accommodation_(eye) (336 words)

	Eye - Biocrawler (Site not responding. Last check: 2007-10-03)
		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.
		The eyes are automatically rotated to remain fixed on the object, directed by input from the organs of balance near the ears.
		He dissected the eyes of animals, and discovering three layers (not two), found that the fluid was of a constant consistency with the lens forming (or congealing) after death, and the surrounding layers were seen to be juxtaposed.
	www.biocrawler.com /encyclopedia/Eye (4222 words)

	A Glossary of Eye Surgery Terms from The Eye Care Center of Longmont, Colorado
		While the eye focuses on the dark spot in the center of the grid, the horizontal and vertical lines in the peripheral vision should appear straight, and the squares formed by these lines should not be distorted.
		Glaucoma is an eye condition characterized by the build up of pressure within the eye causing damage to the main nerve of the eye resulting in loss of vision and potentially blindness.
		During the procedure, a suction ring is placed onto the eye to stabilize it, and the microkeratome is used to form a thin flap of corneal tissue.
	www.eyecaresite.com /glossary.html (4058 words)

	Drs. Palermo & Giuseffi, eyecare, opticians, eyeglasses, contact lenses, frames, and lenses.
		Accommodative Esotropia- (clinical condition) when an individual is focusing on a near object and his or her eyes are turning inward too much.
		Ocular albinism is a pigmentation deficiency occurring mainly in the eyes.
		The eye is dilated with the muscles of accommodation (eye focusing muscles) being temporarily paralyzed with specialized eye drops or spray (Atropine, Homatropine, Cyclogyl, or Mydriacyl).
	www.palermoeyecare.com /patientinformation/visionglossaryterms.asp (8424 words)

	Dr. Thomas Johnson Eyecare - Centerville, Iowa
		Accommodation- (eye focusing) the eye's ability to adjust its focus by the action of the ciliary muscle, which increases the lens focusing power.
		Accommodative Esotropia- this clinical condition is an excessive inward turning of the eye caused by an overactive convergence response as the eye focuses on an object.
		Visual Skills- are accommodation (eye focusing), binocularity (eye teaming), and oculomotor skills (eye movement), which are neuro-muscular abilities that are controlled by muscles inside and outside of the eye and are networked with the brain.
	www.thomasjohnsoneyecare.com /page7.html (8475 words)

	Eye - The real meaning from Timesharetalk wikipedia (Site not responding. Last check: 2007-10-03)
		Many animals, including some mammals, birds, reptiles and fish, have two eyes which may be placed on the same plane to be interpreted as a single three-dimensional "image" (binocular vision), as in humans; or on different planes producing two separate "images" (monocular vision), such as in rabbits and chameleons.
		In most vertebrates and some mollusks, the eye works by allowing light to enter it and project onto a light-sensitive panel of cells known as the retina at the rear of the eye, where the light is detected and converted into electrical signals, which are then transmitted to the brain via the optic nerve.
		The common origin (monophyly) of all animal eyes is now widely accepted as fact based on shared anatomical and genetic features of all eyes; 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.
	www.timesharetalk.co.uk /wiki.asp?k=Eye (4826 words)

	Eye - Wikivisual
		Many animals, including some mammals, birds, reptiles and fish, have two eyes which may be placed on the same plane to be interpreted as a single three-dimensional "image" (binocular vision), as in humans; or on different planes producing two separate "images" (monocular vision), such as in rabbits and chameleons.
		In most vertebrates and some mollusks, the eye works by allowing light to enter it and project onto a light-sensitive panel of cells known as the retina at the rear of the eye, where the light is detected and converted into electrical signals.
		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.
	en.wikivisual.com /index.php/Eye (4530 words)

	Accommodation reflex - Wikipedia, the free encyclopedia
		The accommodation reflex is a reflex action of the eye, in response to focusing on a near object, then looking at distant object (and vice versa), comprising coordinated changes in vergence, lens shape and pupil size.
		A near object (for example, a computer screen) appears large in the field of vision, and the eye receives light from wide angles.
		Exam of cranial nerve II - accommodation is usually tested as a part of this exam.
	en.wikipedia.org /wiki/Accommodation_reflex (197 words)

	Quia - Eye Terms
		Inflammation of the interior of the eye, typically caused by an infection from eye surgery or trauma.
		Eye and vision symptoms include blurred vision, ptosis, halos around lights, light flashes, light sensitivity, eye pain or discomfort, vision loss (blind spots in central vision, tunnel vision or overall impaired vision), distorted vision and wavy lines in vision.
		The sensory membrane that lines the eye; it is composed of several layers and functions as the immediate instrument of vision by receiving images formed by the lens and converting them into signals which reach the brain by way of the optic nerve.
	www.quia.com /jg/436280list.html (8621 words)

	Spectrum Eye, optometrists, opticians, lasik, eyeglasses, contact lenses, frames, and lenses. (Site not responding. Last check: 2007-10-03)
		Each eye has six muscles (lateral rectus, medial rectus, superior oblique, inferior oblique, superior rectus, and inferior rectus) that are coordinated by the brain.
		A filter, eye patch, or eye drops such as atropin or miotics are used on the good eye.
		It is the natural process of the eye losing the ability to accommodate or change the shape of the natural crystalline lens inside the eye to see comfortably at near.
	www.spectrumeye.com /education/visionglossaryterms.asp (10377 words)

	Adlington • Adlington Optometrist • Optometrist Reno Neveda • Contact Lenses • LASIK • Eyeglasses • ...
		Accommodative Esotropia- (clinical condition) when an individual is focusing on a near object and his or her eyes are turning inward too much.
		It includes, but is not limited to, the treatment of strabismus (turned eye), other dysfunctions of binocularity (eye teaming), amblyopia (lazy eye), accommodation (eye focusing), ocular motor function (general eye movement ability), and visual-perception-motor abilities.
		Saccades- the eye's ability to direct and coordinate movement as it quickly and voluntarily shift from one target to another.
	www.eyeglassgallery.net /faq/visionglossaryterms.asp (11010 words)

	Eye information - Search.com (Site not responding. Last check: 2007-10-03)
		Many complex organisms, including some mammals, birds, reptiles and fish, have two eyes which may be placed on the same plane to be interpreted as a single three-dimensional "image" (binocular vision), as in humans; or on different planes producing two separate "images" (monocular vision), such as in rabbits and chameleons.
		The eyes of cephalopods, fish, amphibians, and snakes usually have fixed lens shapes, and focusing vision is achieved by telescoping the lens (similar to how a camera focuses).
		However, the development of the eye is considered by many experts 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).
	domainhelp.search.com /reference/Eye (5622 words)

	The Ultimate Eye Dog Breeds Information Guide and Reference (Site not responding. Last check: 2007-10-03)
		The eye is typically roughly spherical, filled with a transparent gel-like substance called the vitreous humour, with a focusing lens and often a muscle called the iris that controls how much light enters.
		How a complex structure like the eye could have evolved is often said to be a difficult question for the theory of evolution, on the basis that intermediate forms of an eye would presumably have been of little use, and light-sensitive organs are present in a variety of different creatures without any clear evolutionary link.
		However, eyes in different levels various animals show adaption to their requirements (for example, birds of prey have much greater visual acuity than humans), and the different forms of eye in, for example, vertebrates and mollusks are often cited as examples of parallel evolution.
	www.dogluvers.com /dog_breeds/Eye (624 words)

	Eye to Eye: What animal has the sharpest vision?
		Thus, as a potential prey moves closer or farther from the eagle or hawk, the predator's eyes remain focused by rapidly changing the lens curvature.
		Animals with eyes on the sides of their head (such as fish or rodents) have low binocularity (what each eye sees overlaps very little) but high periscopy (each eye has a wide field of view).
		The pecten supplies nutrients and oxygen throughout the vitreous humour of the eye, thereby reducing the number of blood vessels in the retina.
	ebiomedia.com /gall/eyes/sharp.html (798 words)

	Accommodation of the Eye to Different Focus Distance
		To model the accommodation of the eye, the scale model eye was used with the cornea through the front surface of the lens held constant at the model values.
		The matrix for that part of the eye was calculated and then the thickness d and back surface power P were varied.
		The increased accommodation is due largely to highly developed sphincter muscles which vary the curvature of the front of the lens.
	hyperphysics.phy-astr.gsu.edu /hbase/vision/accom.html (282 words)

	Eye - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-03)
		With each eye viewing a different angle, a fused image from all the eyes is produced in the brain providing a very wide angle high resolution image.
		As far as the vertebrate/mollusk eye is concerned, intermediate, functioning stages have existed in nature, which is also an illustration of the many varieties and peculiarities of eye construction.
		Having two eyes is an added complication, because the brain must point both of them accurately enough that the object of regard falls on corresponding points of the two retinas; otherwise, double vison would occur.
	www.davidson.edu /personal/arbugosh/eyewik.htm (4531 words)

	eMedicine - Presbyopia: Cause and Treatment : Article by Ronald A Schachar, MD, PhD
		The so-called accommodating intraocular lenses are based on the Helmholtz theory of accommodation or a variation of it in which an increase in vitreous pressure is assumed to occur during accommodation.
		The decrease in depth of the anterior chamber that occurs during accommodation is due to the increase in central thickness of the lens and not to a forward movement of the whole lens.
		Donders FC: Accommodation and refraction of the eye.
	www.emedicine.com /oph/topic723.htm (5417 words)

	Glossary A-H \| Definitions of Eye Care and Vision Terms - AllAboutVision.com
		Presbyopia is an accommodation disorder that affects everyone if they become old enough, since its causes relate to the aging of the eyes.
		As your eye ages, the gelatinous vitreous humor begins to liquefy in the center of the gel.
		Condition in which the length of the eye is too short, causing light rays to focus behind the retina rather than on it, resulting in blurred near vision.
	www.allaboutvision.com /resources/glossary.htm (5255 words)

	Eye Hotels & Hotel Accommodation Eye, England from Best Hotel
		Eye has a great selection of hotels and many offer instant hotel room availability and secure reservations.
		The information we provide for Hotel Accommodation Eye and Hotel Accommodation England is correct to the best of our knowledge.
		Should and information regarding the Eye Hotels and England Hotels be inaccurate in some way, please inform us so we can correct the necessary errors.
	www.best-hotel.com /hotels/england/eye (273 words)

	The Human Eye
		The applet is a simplified model of the eye in which the front of the eye is a single converging lens.
		In the applet accommodation is accomplished by using the slider at the bottom to vary the focal length of the lens.
		As you use your muscles to accommodate you shorten the focal length of your eye.
	webphysics.davidson.edu /physlet_resources/dav_optics/Examples/eye_demo.html (720 words)

	VISION GLOSSARY Meier Eye and Vision Reno Nevada, eye doctor
		- the complex of eye and vision problems related to near work that are experienced during or related to computer use.
		a tendency of the eyes to want to turn more inward than necessary when an individual is viewing an object at near or at distance, which may cause the individual to experience eyestrain and other symptoms.
		a tendency of the eyes to want to turn more outward than necessary when an individual is viewing an object at near or at distance, which may cause the individual to experience eyestrain and other symptoms.
	www.theeyeguy.com /patientinformation/visionglossaryterms.asp (9372 words)

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	drugpokemona.ifrance.com /siteone/eye-accommodation-hydrocodone.html (1590 words)

	Accommodation applet (Site not responding. Last check: 2007-10-03)
		What is shown is that the closer to the eye an object is, the bigger the image, the more strongly curved the eye's lens is, and the shorter the focal length becomes.
		The top ray does not actually enter the eye but can still be drawn to find the position and size of the image.
		When the object gets very close to the eye, the applet will show an image bigger than the retina, indicating the eye would see only part of the object.
	mysite.verizon.net /vzeoacw1/eye_applet.html (94 words)

	Hotels, Inns, Bed and Breakfast Accommodation Eye, Suffolk, UK.
		Hotels, inns, guesthouses and bed and breakfast accommodation in Eye, Suffolk, England.
		Hotels, inns, bed and breakfast accommodation Eye, Suffolk, England.
		It is a wonderful retreat in which to enjoy food and drink of exceptional quality and superbly appointed accommodation.
	www.databrowse.co.uk /hotels/Suffolk/Eye.html (249 words)

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