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top: A normal eye focuses light on the retina.
bottom: An elongated eyeball causes light to focus in front of the retina.
The ability to see objects at close range better than distant objects. Nearsightedness is caused by the eye focusing light in front of the retina instead of directly on it, usually as a result of an elongated eyeball or a misshapen cornea. Also called myopia. Compare farsightedness.
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|Noun||1.||nearsightedness - (ophthalmology) eyesight abnormality resulting from the eye's faulty refractive ability; distant objects appear blurred|
ophthalmology - the branch of medicine concerned with the eye and its diseases
ametropia - (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia