Gourt > Health > Conditions and Diseases > Eye Disorders > Refractive Errors > Myopia
Myopia, sometimes called near-sightedness or short-sightednessTerm "short-sightedness" is more frequently used as "lack of foresight", is a refractive defect of the eye in which collimated light produces image focus in front of the retina when accommodation is relaxed. This may be caused by a defect of the cornea (generally where the cornea protrudes too far outward from the eye) or from elongation of the eye structure itself (generally the eye is too long). Those with myopia typically can see nearby objects clearly but distant objects appear blurred. The opposite defect of myopia is hyperopia or "far-sightedness" or "long-sightedness" — this is where the cornea is too flat or the eye is too short.
Worldwide, myopia is the most common eyesight problem. About one quarter of the adult population in the United States is myopic. In some countries, such as Japan, Singapore and Taiwan, up to 44% of the adult population is myopic.
Mainstream ophthalmologists and optometrists most commonly correct myopia through the use of corrective lenses, such as glasses or contact lenses. It may also be corrected by refractive surgery, such as LASIK. The corrective lenses have a negative dioptric value (i.e. are concave) which compensates for the excessive positive diopters of the myopic eye.
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Eye Care Source - Myopia - Nearsightedness causes, treatments, news and research.
Meta Description: [ Information on myopia, myopia causes, myopia treatments, and myopia news ]
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Independent Study Project on Myopia - One of the oldest arguments surrounding myopia is whether the condition results from hereditary factors or environmental influences.
Myopes.com - Online information on myopia and its correction.
Meta Description: [ myopia - nearsightedness, shortsightedness: online education for the myopes, description and correction methods (contact lenses,glasses,PRK, LASIK)... ]
Myopia (Near-sightedness) - Information about Myopia.
Myopia - Eyecare Connection - Abstracts and answers concerning Myopia.
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Meta Description: [ Surgical Reversal of Presbyopia is an investigational procedure not yet performed in the United States for presbyopia. The Presby Corp. has just received FDA approval to begin preliminary testing ]
Myopia Manual - Provides impartial and thorough documentation of all the reasons and therapies for myopia, and recommendations.
Meta Description: [ An unbiased and (rather) complete overview of all the reasons and therapies for myopia, and related info, recommendations and conclusions ]
Myopia Myth - Claims that nearsightedness is not inherited but is caused by excessive close work such as reading. It can be prevented or improved without surgery.
Meta Description: [ Myopia or nearsightedness is not inherited but is caused by excessive reading and other close work. It can be prevented. ]
Prevent Myopia - An easy to understand description of how myopia (nearsightedness) can be prevented. Includes animation and narration. Suitable for adults or children.
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