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retina

[ret-n-uh, ret-nuh]

Example Sentences Origin

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noun, plural ret·i·nas, ret·i·nae

[ret-n-ee] . Anatomy.

the innermost coat of the posterior part of the eyeball that receives the image produced by the lens, is continuous with the optic nerve, and consists of several layers, one of which contains the rods and cones that are sensitive to light.

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Origin:
1350–1400; Middle English ret(h)ina < Medieval Latin rētina, perhaps equivalent to Latin rēt- (stem of rēte) net + -ina -ine¹

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Retina is always a great word to know.

So is floating rib. Does it mean:

one member of the two lowest pairs of ribs, which are attached neither to the sternum nor to the cartilages of other ribs.

the trunk of the body from the neck to the abdomen; thorax

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Example Sentences

The eyes may be windows to the soul, but the retina is the brain's window to the world.

Every human eye has a blind spot, and the retina is covered up by blood vessels and nerves.

What is consciously perceived is not a simple mapping of the images that fall on the retina.

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The eyes may be windows to the soul, but the retina is the brain's window to the world.

Every human eye has a blind spot, and the retina is covered up by blood vessels and nerves.

What is consciously perceived is not a simple mapping of the images that fall on the retina.

Rods tell your brain that light is hitting your retina.

The tiny zebrafish had already impressed scientists with its ability to regenerate damaged spinal cord, retina and fin tissues.

Researchers have discovered a gene mutation that controls photoreceptors in the retina.

Retinitis pigmentosa is an eye disease in which there is damage to the retina.

Anyway, they not only fingerprinted her but gave her a retina scan.

As is common with this disease, part of an inner layer of her retina had survived.

The ability to see colors comes from specialized light-sensing cells found in the retina.

Cataracts cause blindness by fogging the lens of the eye, scattering light before it reaches the retina.

Retinal detachment repair is eye surgery to place a detached retina back into its normal position.

The retina is a layer at the back of the eye packed with light-detecting cells.

You're seeing blood cells moving inside your retina.

Imagine how these things will go when the iPad finally gets a retina display.

Retinal artery occlusion is a blockage in one of the small arteries that carry blood to the retina.

Each eye retina has a blind spot where there are no light-sensitive cells.

The procedure reshapes the cornea by vaporizing cells so that light focuses onto the retina properly.

The chip electrically stimulates the retina so ganglion cells can pick up the images.

Implants being developed by two groups fit into a snug berth under the retina of the eye.

Lasers can cause permanent damage to the retina of the eye.

HeLa cells expressing green fluorescent protein, and a rat retina.

Gnat-sized robots, microscopic gyroscopes, television beamed directly onto your retina.

The retina is the internal layer of the eye that receives and transmits focused images.

There is a thin white and yellow layer or mesh right in front of the retina.

The eye is positive at the cornea and negative at the retina.

The retina is the layer of tissue at the back part of the eye.

El gato tiene una parte detrás de su retina llamada tapetum.

In the outside world, having your retina or iris scanned can be an inconvenience.

The retina is a lightsensitive membrane that lines the inner back of the eye.

The disease, cytomegalovirus retinitis, is an inflammation of the retina that occurs in patients with weak immune systems.

The retina is the inner layer of tissue at the back of the eye.

But projecting images directly onto the viewer's retina superimposes data on what is viewed without hampering the person's vision.

Macular degeneration is a disease of the retina that affects the macula in the back of the eye.

Diabetic retinopathy-- this complication of diabetes can lead to bleeding into the retina.

In the other half the disease is localized, causing wedge-shaped abnormalities in the nerve fiber layers of the retina.

The patients have an infection of the retina caused by cytomegalovirus.

The blood vessels in the retina are abnormally weakened.

Not many hockey players would attempt a comeback after having a retina re-attached.

Diabetic retinopathy is damage to the eye's retina that occurs with long-term diabetes.

But some may venture off away from the center of the retina.

Acute infection in children may cause swelling of the retina in the eye.

Your retina converts light energy into a nerve impulse that is carried to the brain and interpreted.

The cause of a detached retina is primarily a blow to the eye itself, not to the head.

The more serious wet form is marked by the growth of abnormal, leaky blood vessels behind the retina.

The scientists studied the conical photoreceptors in the salmon's retina.

Recreating the upper layers of the retina is more difficult.

Visible in this retina cross section are the cells that form the.

When the retina is injured, vision is seriously threatened and.

Their chips hold easily checkable data such as retina scans, which are both unique and unfakeable.

The retina processes information much morethan anyone has ever imagined, sending a dozen different movies to the brain.

It is called trichromacy, because it depends on three types of light- activated pigments in the retina of the eye.

Hand and retina scanners have been touted for years as a futuristic gatekeepers to high-security buildings.

In addition, micro-robots could deliver drugs directly to veins inside the retina that have become obstructed by.

It monitors light through a pathway to the retina and conveys information about day length to the pineal gland.

When you stare at an image, the neurons in your retina eventually adapt to this unchanging stimulus and.

Sitting directly between the lens and the retina is a cavity known as the vitreous or vitreous humor.

Devices for facial recognition and retina scans can't be far behind.

Long was an internationally renowned retina specialist and one of the first women resident surgeons in.

My retina specialist is impressed, my cardiologist is supportive, and my neurologist is skeptical.

Henry unlocked the door with his retina pattern-scanner and walked in, followed by the serving-man.

But the human retina does not ordinarily produce those molecules.

The case study showed the pathway from the detection of a photon in the retina to behaviour.

Light hits your retina and is transduced to an electrical signal by photoreceptors.

The retina is the layer of tissue at the back of the inner eye that converts light.

Images that come to a focus behind the retina indicate farsightedness.

The retina is a layer of tissue in the back of the eye that is.

Images formed on the retina are carried to the brain by the optic nerve.

Josephberg, a retina specialist, and the eye exam of a teenage patient of his who was injured by a laser.

The retina contains two kinds of photoreceptors: cones and rods.

Fluorescein angiography is an eye test that uses a special dye and camera to look at blood flow in the retina and choroid.

Thus, more ultraviolet rays reach the retina of a baby than reach the retina of an adult.

He removes portions of the cornea with a laser, changing its curvature so light is better focused on the retina.

The resulting bleeding and scarring, called retinopathy of prematurity, damages the retina.

Evaluation of the posterior chamber, vitreous and retina with ultrasound.

The macula is a dense collection of light-sensitive cells in the middle of the retina along the back of the eye.

Swallows also have two areas of sharp focus, called foveae, on each retina.

The electrode measures the electrical activity of the retina in response to light.

He was found to have a central retina vein occlusion in that eye and glaucoma in both eyes.

COLLAPSE

Dictionary.com Unabridged

Trademark. a brand of tretinoin, used especially to reduce wrinkles caused by overexposure to the sun.

Origin:
1975–80

Link To retina

Collins

World English Dictionary

retina (ˈrɛtɪnə)

—n , pl -nas, -nae
	the light-sensitive membrane forming the inner lining of the posterior wall of the eyeball, composed largely of a specialized terminal expansion of the optic nerve. Images focused here by the lens of the eye are transmitted to the brain as nerve impulses

[C14: from Medieval Latin, perhaps from Latin rēte net]

'retinal

—*adj*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline

Word Origin & History

retina

1392, from M.L. retina, probably from V.L. (tunica) *retina, lit. "net-like tunic," on resemblance to the network of blood vessels at the back of the eye, and ult. from L. rete "net." The V.L. phrase may be Gerard of Cremona's 12c. translation of Ar. (tabaqa) sabakiva "netlike layer," itself a translation

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of Gk. amphiblestroeides (khiton).

COLLAPSE

American Heritage

Medical Dictionary

retina ret·i·na (rět'n-ə)
n. pl. ret·i·nas or ret·i·nae (rět'n-ē')
The delicate multilayered light-sensitive membrane lining the inner posterior chamber of the eyeball containing the rods and cones and connected by the optic nerve to the brain.

ret'i·nal adj.

American Heritage

Science Dictionary

retina (rět'n-ə) Pronunciation Key
Plural retinas or retinae (rět'n-ē')
The light-sensitive membrane that lines the inside of the back of the eyeball and connects to the brain by the optic nerve. The retina of vertebrate animals contains rods and cones, specialized cells that absorb light.

American Heritage

Cultural Dictionary

retina [(ret-n-uh)]

The inner layer of the eye, sensitive to light, that is connected to the brain by the optic nerve. The retina lines the rear of the eye-ball. The lens of the eye focuses waves of light on the retina.

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Matching Quote

"In short, camp mocks bad taste; kitsch exploits it. Camp arouses our sense of the ridiculous and we respond with amused tolerance. When we see Bette Davis or Ruth Gordon, fine if sometimes flamboyant performers, relax their self-discipline and overextend their acting technique in a superfluity of ineffective gestures—finger-twitching and hip-switching, hand-rubbing or hip-protruding—we label the sum total as camp. Mae West, whose nasally provocative delivery, eye-rolling, lip-pursing, and pelvic tics parody the conventional invitation to dalliance, is never out of control and is camp, pure and simple.... Camp was also the stock-in-trade of Carmen Miranda, whose retina-searing Technicolor get-ups, skyscraper headdresses bearing a season's fruit harvest, clomping platform shoes and garbled English projected in a voice that could be heard on Mars all came together beautifully in her campy personification of Exaggeration. Had we been blessed with the Brazilian Bombshell's own blazing interpretation of Joan of Arc, the grotesque, if fascinating, result would surely have been kitsch."

-Curtis F. Brown

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retina

ret·i·na

Ret·in-A