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What is “monovision?” Top

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What is “monovision?” Top

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Introduction What is Refractive Surgery? Refractive surgery is the specialty of ophthalmology that deals with improvement and correction of optical defects of the eye. These optical defects cause people to have difficulity seeing without glasses, contact lenses, or other optical devices. The major types of optical defects are: Myopia or nearsightedness Astigmatism Hyperopia or farsightedness Top Vision What is myopia or nearsightedness? People with myopia can usually read without glasses, but they cannot see far away without glasses or contact lenses. Myopia is a hereditary condition in which the eye is either longer than it should be, or the cornea has too much curvature. What is astigmatism? People with astigmatism see ghost images or double images without their glasses on. In this condition, the cornea is not spherical, but is shaped more like a football or teaspoon. Light entering the eye is distorted by this lack of sphericity, causing blurry images and ghost images. Astigmatism i

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