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A contact lens (also known simply as a contact) is a corrective, cosmetic, or therapeutic lens usually placed on the cornea of the eye. Modern soft contact lenses were invented by the Czech chemists Otto Wichterle and Drahoslav Lím, who also invented the first gel used for their production.

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Wikipedia About Contact Lenses

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A contact lens (also known simply as a contact) is a corrective, cosmetic, or therapeutic lens usually placed on the cornea of the eye. Modern soft contact lenses were invented by the Czech chemists Otto Wichterle and Drahoslav Lím, who also invented the first gel used for their production.

Contact lenses usually serve the same corrective purpose as glasses, but are lightweight and virtually invisible—many commercial lenses are tinted a faint blue to make them more visible when immersed in cleaning and storage solutions. Some cosmetic lenses are deliberately colored to alter the appearance of the eye.

It has been estimated that 125 million people use contact lenses worldwide (2%),Barr, J. "2004 Annual Report". Contact Lens Spectrum. January, 2005. including 28 to 38 million in the United StatesDixie Farley. "Keeping an Eye on Contact Lenses: Safety, Options Shape Contact Lens Decisions." U.S. Food and Drug Administration: FDA Consumer. March-April 1998; revised August 1998. and 13 million in Japan. The types of lenses used and prescribed vary markedly between countries, with rigid lenses accounting for over 20% of currently-prescribed lenses in Japan, Netherlands and Germany but less than 5% in Scandinavia.

People choose to wear contact lenses for many reasons, often due to their appearance and practicality. When compared to spectacles, contact lenses are less affected by wet weather, do not steam up, and provide a wider field of vision. They are more suitable for a number of sporting activities. Additionally, ophthalmological conditions such as keratoconus and aniseikonia may not be accurately corrected with glasses.

History

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René Descartes proposed another idea in 1636, in which a glass tube filled with liquid is placed in direct contact with the cornea. The protruding end was to be composed of clear glass, shaped to correct vision; however the idea was impracticable, since it would make blinking impossible.

In 1801, while conducting experiments concerning the mechanisms of accommodation, scientist Thomas Young constructed a liquid-filled "eyecup" which could be considered a predecessor to the contact lens. On the eyecup's base, Young fitted a microscope eyepiece. However, like Leonardo's, Young's device was not intended to correct refraction errors.

Sir John Herschel, in a footnote of the 1845 edition of the Encyclopedia Metropolitana, posed two ideas for the visual correction: the first "a spherical capsule of glass filled with animal jelly", and "a mould of the cornea" which could be impressed on "some sort of transparent medium". Though Herschel reportedly never tested these ideas, they were both later advanced by several independent inventors such as Hungarian Dr. Dallos (1929), who perfected a method of making molds from living eyes. This enabled the manufacture of lenses that, for the first time, conformed to the actual shape of the eye.

Search results for Contact Lenses

Contact Lens

Online contact lens retailer offering discount daily, weekly, monthly, spherical, toric, multifocal, and color contact lenses by Acuvue, Bausch & Lomb, Cibavision, and Coopervision.www.contactlens.com/

Discount Contact Lenses Online at ACLens.com

Direct delivery contact lens supply company.www.aclens.com/

US FDA/CDRH: Contact Lenses - Home

A source for general information and the latest innovations on contact lenses. ... Rub and rinse your contact lenses as directed by your eye care professional. ...www.fda.gov/cdrh/contactlenses/

Contact Lenses - A Consumer Guide to Contact Lens Options

Discusses types of contact lenses to correct various visual needs, wearing schedules, where to buy, and how to care for them.www.allaboutvision.com/contacts/

Contact Lens at Clearly Contacts® - the easy way to buy Canadian ...

All major brands of discount contact lenses such as Acuvue, SofLens, Biomedics, ... lowest price on your contact lenses. ... The New Way to Buy Contact Lenses ...www.clearlycontacts.ca/

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News about Contact Lenses

Is 'Gecko Vision' The Key To The Multifocal Contact Lens Of The Future?

Medical News TodayNocturnal geckos are among the very few living creatures able to see colors at night, and scientists' discovery of series of distinct concentric zones may lead to insight into better cameras and contact lenses.http://www.medicalnewstoday.com/articles/149307.php

Vote and get free contact lenses

New KeralaNew Delhi, May 5: In a bid to encourage youth to come out and vote, Bausch and Lomb has announced it will give free contact lenses to students who exercise their franchise.http://www.newkerala.com/nkfullnews-1-33279.html

Boneheads aplenty during rough week in soccer

Miami HeraldOK, so who wins the Soccer Bonehead of the Week Award? Does it go to Norwegian referee Tom Henning Ovrebo, who apparently left his contact lenses in Oslo when he was packing for his trip to officiate the Champions League semifinal between Barcelona and Chelsea? There is no question Barca is a fabulous, stylish team, and might have won the match anyway, but it didn't hurt that four apparent ...http://miamiherald.com/sports/story/1040589.html

'Gecko vision': Key to the multifocal contact lens of the future?

EurekAlert!( Association for Research in Vision and Ophthalmology ) Nocturnal geckos are among the very few living creatures able to see colors at night, and scientists' discovery of series of distinct concentric zones may lead to insight into better cameras and contact lenses.http://www.eurekalert.org/pub_releases/2009-05/afri-vk050709...

Tear Research Focused On Contact Lens Risks, Benefit

redOrbitContact lenses are great for sight, but do they have an impact on general eye health? Researchers at the University of Alabama at Birmingham (UAB) School of Optometry are working to answer that question by analyzing tears.Biological changes in the eye can be measured through minor fluctuations in the level of inflammatory proteins called cytokines, which are present in the tear film.http://www.redorbit.com/news/health/1684728/tear_research_fo...

News about Contact Lenses

Vote and get free contact lenses

Newstrack IndiaNew Delhi, May 5 (IANS) In a bid to encourage youth to come out and vote, Bausch and Lomb has announced it will give free contact lenses to students who exercise their franchise. Under the Bausch and Lomb's 'Vote for Your Vision' promotion, 5,000 ... http://www.newstrackindia.com/newsdetails/93877

Scientists analysing tears to study contact lenses' risks, benefits

Newstrack IndiaWashington, May 7 (ANI): Researchers at the University of Alabama at Birmingham (UAB) School of Optometry are studying the risks and benefits of using contact lenses by analysing tears. The researchers say that biological changes in the eye can be ... http://www.newstrackindia.com/newsdetails/94537

Gecko vision’ could open way to futuristic cameras, contact ...

Thaindian.comLondon, May 8 (IANS) Nocturnal geckos are among the very few living creatures able to see colours at night, which scientists could harness to develop better cameras and contact lenses. The key to the exceptional night vision of this creature is a ... http://www.thaindian.com/newsportal/sci-tech/gecko-vision-co...

Care on contact

Herald NewsDr. Timothy Kisla would be the first to tell you of the convenience and satisfaction of wearing contact lenses to correct vision problems. Kisla, an ophthalmologist specializing in cornea diseases at Advanced Eye Care in New Lenox, wears them himself ... http://www.suburbanchicagonews.com/heraldnews/lifestyles/155...

1-800-VENEERS to Offer $499.00 Porcelain Veneers and Crowns

Newsblaze.comWhat other alpha numeric 1-800- Toll free numbers did for consumers with consumer prices on goods and services from flowers to contact lenses, 1-800-VENEERS will do for porcelain veneers and crowns. Lower the cost and deliver excellent customer ... http://newsblaze.com/story/2009051004370400002.pr/topstory.h...

Search results for Contact Lenses

Contact Lens

Contact Lens.com - World's Best Contact Lens Store™ Buy discount contact lenses online or 1-800 LENSFAST. Acuvue contact lens, Coopervision, Ciba Vision, Bausch & Lomb and Focus.http://www.contactlens.com/

Contact Lenses - LensShopper.com - Compare daily prices on discount ...

Savings up to 70% on Contact Lenses and Contacts. Get the best available price from 12 Contact Lens retailers.http://www.lensshopper.com/

Contact Lenses - Facts from the Contact Lens Manufacturers Association

Learn about healthy contact lens wear from the Contact Lens Manufacturers Associationhttp://www.contactlenses.org/

Contact Lenses Forum - Lens 101

Contact Lenses Forum - Lens 101 is an informational site encouraging an open discussion of contact lenses. Forums on Daily Disposable, 1-2 Week Disposable, Monthly Disposable ... http://www.lens101.com/

Acuvue Brand Contact Lenses

ACUVUE® is the leading provider of prescription contact lenses, including contacts that change or enhance your eye color. Get a Free Trial Pair Certificate at Acuvue.comhttp://www.acuvue.com/

Wikipedia results for Contact Lenses

Contact lens - Wikipedia, the free encyclopedia

A contact lens (also known simply as a contact) is a corrective, cosmetic, or therapeutic lens usually placed on the cornea of the eye. Modern soft contact lenses were invented by ... http://en.wikipedia.org/wiki/Contact_lens

Corrective lens - Wikipedia, the free encyclopedia

A corrective lens is a lens worn in front of the eye, mainly used to treat myopia, hyperopia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short ... http://en.wikipedia.org/wiki/Corrective_lens

Circle Contact Lens - Wikipedia, the free encyclopedia

Circle Contact Lens, also commonly known as big eye Circle Contact Lens, is a special contact lens that when placed in the eye makes the iris appear larger in size; this product ... http://en.wikipedia.org/wiki/Circle_Contact_Lens

Keratitis - Wikipedia, the free encyclopedia

In addition, contact lens wearers are typically advised to discontinue contact lens wear and discarding contaminated contact lenses and contact lens cases.http://en.wikipedia.org/wiki/Contact_lens_acute_red_eye

Bionic contact lens - Wikipedia, the free encyclopedia

The Bionic contact lens is being developed to provide a virtual display that could have a variety of uses from assisting the visually impaired to the video game industry. [1]http://en.wikipedia.org/wiki/Bionic_contact_lens
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Answers for Contact Lenses

Jenny QContact lenses?Jenny QIn water, you are exposing yourself to all sorts of harmful bacteria which traps itself under the lenses, I advise against wearing contacts for what you are about to do.SmileyKylieIs Freshlook Color Contact Lenses Very Uncomfortable?SmileyKylieYes, its a bit of a joke in the eyecare industry, when you talk about freshlook colors and comfort, they don't go together. They have the best selection of colors but they are not comfortable. Acuvue ...MrKnowItAllHow do colored contact lenses work without tinting your vision?MrKnowItAllthere is a clear hole in the center for your pupil, so you don;t see the color unless it slides over your pupil [like mine often does] i wear colored contacts in four shades, and yeah, when my pupil ...alexWhat happens if your pupils dilate past your contact lenses?alexYour vision wouldn't dissapear but the range would decrease i think. I dunno ._.nassima65What color of contact lenses go good with black hair?nassima65Same problem!! Im thinking of Gray. that would look nice. I have very dark brown hair and tan skin. and boring old browm eyes..im thinking of a change.. im also thinking of green....
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