News tagged with contact lenses
Scleral lenses benefit patients with corneal irregularities
(Medical Xpress)—A UC Davis Health System Eye Center study found that scleral lenses, which rest beyond the limits of the cornea and cover the white part of the eye (sclera), were a good alternative for patients with corneal ...
Ophthalmology
Oct 09, 2012 |
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New technique shows promise in restoring near vision without glasses
By middle age, most people have age-related declines in near vision (presbyopia) requiring bifocals or reading glasses. An emerging technique called hyperopic orthokeratology (OK) may provide a new alternative for restoring ...
Ophthalmology
Apr 01, 2013 |
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Contacts uncomfortable? Changing lens type or lens care product may help
If your contact lenses are causing you discomfort, simply switching to a different type of contact lens or lens care product may bring improvement, reports a study, " Effect of Lens and Solution Choice on the Comfort of Contact ...
Ophthalmology
May 01, 2013 |
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Wearing contact lenses can affect glaucoma measurements
A study about how wearing contact lenses affects glaucoma measurements has been named the top presentation at Loyola University Chicago Stritch School of Medicine's annual St. Albert's Day research symposium.
Diseases, Conditions, Syndromes
Jan 13, 2012 |
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Patients who suffer dry eyes find relief from wide-diameter contact lenses
(Medical Xpress) -- Susan Loughman is among the tens of millions of Americans who suffer dry eyes. She has an especially bad condition, which makes it feel like there's sandpaper in her eyes.
Ophthalmology
Mar 22, 2012 |
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Don't take shortcuts when caring for contact lenses, expert says
(HealthDay)—Common shortcuts people take when caring for their contact lenses could have serious consequences, such as infections or ulcerations, according to an eye disease expert.
Ophthalmology
Nov 24, 2012 |
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Smart contact lenses could make eye drops a thing of the past
(Medical Xpress) -- An Auburn University team of chemical and biomedical engineers led by Mark Byrne, the Daniel F. and Josephine Breeden Associate Professor in the Samuel Ginn College of Engineering, has developed a new ...
Medical research
Nov 09, 2011 |
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'OK' contact lenses work by flattening front of cornea, not the entire cornea
A contact lens technique called overnight orthokeratology (OK) brings rapid improvement in vision for nearsighted patients. Now a new study shows that OK treatment works mainly by flattening the front of the cornea, reports ...
Ophthalmology
Mar 04, 2013 |
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Gaming to improve eyesight and 'hearing' colors
How we perceive the world tells us a lot about how the brain processes sensory information.
Neuroscience
Feb 17, 2012 |
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Air exposure between blinks affects deposits on contact lenses
Modern contact lens materials are prone to drying when exposed to air, which contributes to the buildup of deposits on contact lenses, according to a study – "The Impact of Intermittent Air Exposure on Lipid Deposition", ...
Ophthalmology
Nov 05, 2012 |
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Loyola optometrist warns not to wear tinted contact lenses for Halloween without a prescription
Decorative tinted contact lenses will be popular accessories this Halloween, but a Loyola University Medical Center optometrist is warning that improper use could cause severe eye damage.
Ophthalmology
Oct 23, 2012 |
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Don't get tricked into hurting your eyes with unsafe contact lenses for Halloween
(Medical Xpress) -- Some people think it’s cool to give themselves “cat” eyes, “wolf” eyes or really bloodshot eyes for Halloween. That’s possible with decorative contact lenses, ...
Health
Oct 25, 2011 |
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Morning vs nighttime replacement affects adverse events with extended-wear contact lenses
For people using 30-day extended-wear/continuous-wear (EW/CW) contact lenses, replacing lenses at night doesn't lower the risk of complications compared to changing lenses monthly, suggests a study – "The Effect of Daily ...
Ophthalmology
Dec 10, 2012 |
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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.
