Brief introduction of myopia

Published: 29th July 2010
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Myopic eye or myopia, is a vision problem in which people have difficulty in reading and seeing objects clearly at a distance, which appear blurred because these images are focused in front of the retina, but can see nearby tasks. The eyeball of a myopic people is a little longer from front to back than general people. Myopia is also called nearsightedness, shortsightedness or short sight. About one third of the people around the word experienced myopia. And myopic eye usually occurs in childhood.

A diagnosis of myopia is typically confirmed during an eye examination by an ophthalmologist, optometrist or orthoptist. If someone is myopic, the prescription is a negative number. Myopic eye can usually be corrected with glasses or contact lenses. You may need to wear your glasses or contact lenses all the time if the negative number is high (high myopia), or only when you need to see something clearly if myopia is not serious (low myopia). Myopia may stabilize at a certain point, or in other conditions it worsens gradually. So myopic people should do eye exam and change their eyeglasses if necessary.Orthokeratology is a non-surgical procedure for myopia correction, in which you wear special contact lenses that slowly reshape the cornea and when the lenses are removed and the patient can see clearly without the lenses temporarily. Myopia can also be corrected by eye surgery, such as LASIK or PRK. LASIK is the most common surgery for correcting myopia, in which a flap is cut through the top of the cornea by an excimer laser. In PRK the laser removes a layer of corneal tissue to correct myopia, which allows light rays to focus on the retina. If the eye surgery is successful, you may not need to wear glasses or contacts.











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