progressive myopia

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 (M) [mi-o´pe-ah]
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., adj myop´ic. 

Myopia generally appears before the age of 8, often becoming gradually worse until about the age of 20, when it ceases to change much. In later years the nearsighted person may find he or she can read comfortably without glasses. In children the most frequent symptoms of myopia are attempts to brush away blurriness, frequent rubbing of the eyes, and squinting at distant objects. Myopia can almost always be corrected with eyeglasses or contact lenses. Surgical procedures to correct it include radial keratotomy, photorefractive keratectomy, and lasik.
Refraction and correction in myopia. From Ignatavicius and Workman, 2000.
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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

progressive myopia

Myopia that increases steadily during adult life.
See also: myopia
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The health implications of progressive myopia can place children at risk for eye diseases like retinal detachments and glaucoma as they reach adulthood.
For example, patients with this disease cannot evacuate tears from their eyes, and they will also go on to experience repetitive bone fractures (Annex A) or progressive myopia as they age," said Carine Bonnard, a final-year PhD student at IMB and the first author of the paper.
This phenomenon is called progressive myopia, a condition represented by defective vision of distant objects, also called nearsightedness.
He was born with progressive myopia (short sightedness) but was misdiagnosed with a genetic condition.

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