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myopia(M) (mi-o´pe-ә) a defect of vision consisting of an error of refraction in which rays of light entering the eye parallel to the optic axis are brought to a focus in front of the retina, so that vision for near objects is better than for far. This results from the eyeball being too long from front to back. Called also nearsightedness. adj., myop´ic, adj. .
Myopia: error of refraction in a myopic eye (A), contrasted with normal refraction in an emmetropic eye (B). curvature myopia
myopia due to changes in curvature of the refracting surfaces of the eye, especially of the cornea. index myopia
myopia due to abnormal refractivity of the media of the eye. malignant myopia
, pernicious myopia
progressive myopia with disease of the choroid, leading to retinal detachment and blindness. progressive myopia
myopia that continues to increase in adult life.
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