News tagged with contact lenses
DARPA sets sights on high-tech contact lenses
(Phys.org) -- A Bellevue, Washington, company specializing in display technology based on eyewear and contact lenses has sealed a deal with DARPA. Innovega, which says its technology can open a “new dimension ...
Technology / Hi Tech & Innovation
Apr 15, 2012 |
4.9 / 5 (17) |
11
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'Gecko vision': Key to the multifocal contact lens of the future?
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.
May 07, 2009 |
4.4 / 5 (5) |
0
Eye exercises help patients work out vision problems
You've probably been there. In a doctor's office, being advised to do what you dread - exercise. You get that feeling in your gut, acknowledging that, indeed, you should exercise but probably won't. Now imagine ...
Medicine & Health / Diseases, Conditions, Syndromes
Mar 31, 2009 |
3.4 / 5 (5) |
2
Miniature pressure sensors for medical touch
A new kind of flexible, transparent pressure sensor, developed at the University of California, Davis, for use in medical applications, relies on a drop of liquid.
Chemistry / Analytical Chemistry
Mar 05, 2012 |
5 / 5 (2) |
0
Darpa researchers design eye-enhancing virtual reality contact lenses
Currently being developed by DARPA researchers at Washington-based Innovega iOptiks are contact lenses that enhance normal vision by allowing a wearer to view virtual and augmented reality images without the ...
Technology / Hi Tech & Innovation
Feb 01, 2012 |
4.5 / 5 (2) |
2
'Contact lenses' for animals
Lions, giraffes, tigers, rabbits, bears, rhinos and even owls can go blind from cataracts, but an east German firm has an answer: custom-made "contact lenses".
Jul 16, 2009 |
5 / 5 (1) |
0
Novel contact lenses provide extended pain relief to laser eye surgery patients
Scientists are reporting development of contact lenses that could provide a continuous supply of anesthetic medication to the eyes of patients who undergo laser eye surgery — an advance that could relieve ...
Jan 18, 2012 |
5 / 5 (1) |
0
Contact lens
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 chemist Otto Wichterle and his assistant Drahoslav Lím, who also invented the first gel used for their production.
Contact lens 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%), including 28 to 38 million in the United States 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.
For more information about Contact lens, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
