Millions of people around the world wear contact lenses, including reusable ones. But these plastic lenses don't last forever, and lenses need to be replaced every few days, weeks or months. Now, researchers reporting a pilot ...
Jun 15, 2023
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Researchers have identified five genetic variants that increasingly raise a person's risk of becoming nearsighted the longer they stay in school. A team led by Jeremy Guggenheim of Cardiff University, United Kingdom, published ...
Nov 17, 2022
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People who wear reusable contact lenses are nearly four times as likely as those wearing daily disposables to develop a rare sight-threatening eye infection, finds a study led by UCL and Moorfields researchers.
Sep 22, 2022
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New contact lens technology to help diagnose and monitor medical conditions may soon be ready for clinical trials.
Mar 10, 2021
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It looks like science fiction: A machine dips into a shallow vat of translucent yellow goo and pulls out what becomes a life-sized hand.
Mar 6, 2021
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As people age, the ability of their eyes to focus close up declines. When a team led by Penn psychologist and neuroscientist Johannes Burge discovered that monovision, a common treatment to counter this deterioration, also ...
Nov 30, 2020
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Contact lenses may someday do more than correct poor vision, with new, preliminary research in animals suggesting they could also monitor your diabetes and deliver medications.
Apr 27, 2020
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Drug-eluting contact lenses, which gradually release drugs into the eye, offer a promising alternative to daily eye drops, which can be unpleasant and hard for patients to properly administer. In a 2016 preclinical study ...
Oct 2, 2019
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The lives of contact lens wearers just got a whole lot easier.
Apr 13, 2018
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The world's blind will increase threefold from about 36 million today to 115 million in 2050 as populations expand and individuals grow ever older, researchers said Thursday.
Aug 3, 2017
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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 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.
This text uses material from Wikipedia, licensed under CC BY-SA
