News tagged with myopia
Optometry experts prove the effectiveness of orthokeratology in myopic control
After a lengthy study spanning over four years, Professor Pauline Cho from the School of Optometry at The Hong Kong Polytechnic University (PolyU) and her research team concluded that orthokeratology not only can correct ...
Jan 11, 2012 |
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More time outdoors may reduce kids' risk for nearsightedness
A new analysis of recent eye health studies shows that more time spent outdoors is related to reduced rates of nearsightedness, also known as myopia, in children and adolescents. Myopia is much more common today in the United ...
Oct 24, 2011 |
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Researchers identify gene that leads to myopia (nearsightedness)
A Ben-Gurion University of the Negev research group led by Prof. Ohad Birk has identified a gene whose defect specifically causes myopia or nearsightedness.
Sep 01, 2011 |
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Improving risk/benefit estimates in new drug trials
It's all too familiar: researchers announce the discovery of a new drug that eradicates disease in animals. Then, a few years later, the drug bombs in human trials. In the latest issue of the journal PLoS Medicine, ethics ...
Medicine & Health / Medications
Mar 08, 2011 |
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Training the brain to think ahead in addiction
The growing numbers of new cases of substance abuse disorders are perplexing. After all, the course of drug addiction so often ends badly. The negative consequences of drug abuse appear regularly on TV, from stories of celebrities ...
Medicine & Health / Psychology & Psychiatry
Jan 27, 2011 |
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Gene discovery could yield treatments for nearsightedness
Myopia (nearsightedness) is the most common eye disorder in the world and becoming more common, yet little is known about its genetic underpinnings.
Sep 12, 2010 |
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A safer alternative to laser eye surgery?
A new type of procedure for correcting short-sightedness could be safer than laser eye surgery, according to a new Cochrane Systematic Review. The study also shows that patients prefer the new procedure, despite there being ...
May 11, 2010 |
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90 percent of children with intermittent exotropia will become nearsighted by 20 years of age
Intermittent exotropia, a condition in which the eyes turn outward while looking at an object, occurs in about 1% of American children and is less common than esotropia, where the eyes turn inward. In an article published ...
Apr 07, 2010 |
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New study could help predict suicidal behaviour in older adults
(PhysOrg.com) -- Focussing too much on the present and not using past experience to make decisions could be linked to suicide in elderly depressed adults, researchers from Cambridge and Pittsburgh have found. ...
Medicine & Health / Psychology & Psychiatry
Mar 15, 2010 |
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Bifocals may slow progression of nearsightedness in children
Bifocal glasses may be effective in slowing the progression of myopia (nearsightedness) in children with high rates of progression, according to a report in the January issue of Archives of Ophthalmology.
Jan 11, 2010 |
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Myopia appears to have become more common
Myopia (nearsightedness) may have been more common in Americans from 1999 to 2004 than it was 30 years ago, according to a report in the December issue of Archives of Ophthalmology.
Dec 14, 2009 |
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Certain type of implanted lenses may be a treatment option for some patients with nearsightedness
Implantable lenses made of a collagen-like substance appear to provide stable correction of moderate to high nearsightedness (myopia) over four years of follow-up, according to a report in the July issue of Archives of Op ...
Jul 13, 2009 |
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Sunlight could stop short-sightedness
A spreading pandemic of myopia among the world’s urban children may be avoided if children spend at least two to three hours each day outdoors.
Jan 06, 2009 |
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Myopia
Myopia (Greek: μυωπία, muōpia, "nearsightedness" (AmE), "shortsightedness" (BrE)) is a refractive defect of the eye in which collimated light produces image focus in front of the retina under conditions of accommodation. In simpler terms, myopia is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it. This causes the image that one sees when looking at a distant object to be out of focus but in focus when looking at a close object.
Eye care professionals most commonly correct myopia through the use of corrective lenses, such as glasses or contact lenses. It may also be corrected by refractive surgery, though there are cases of associated side effects. The corrective lenses have a negative optical power (i.e. are concave) which compensates for the excessive positive diopters of the myopic eye. Myopia is partly hereditary.
For more information about Myopia, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
