Myopia

n. nearsightedness, condition of the eyes in which objects that are far away cannot be seen clearly (Ophthalmology); lack of insight and forethought

Myopia (from Greek: μυωπία myopia "near-sightedness"), also called near- or short-sightedness, is a refractive defect of the eye in which collimated light produces image focus in front of the retina when accommodation is relaxed.Those with myopia see nearby objects clearly but distant objects appear blurred. With myopia, the eyeball is too long, or the cornea is too steep, so images are focused in the vitreous inside the eye rather than on the retina at the back of the eye. The opposite defect of myopia is hyperopia or "farsightedness" or "long-sightedness" — this is where the cornea is too flat or the eye is too short.
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Myopia is the medical term for nearsightedness. People with myopia see objects more clearly when they are close to the eye, while [more]Myopia - Community and Resources

Noun
1. (ophthalmology) eyesight abnormality resulting from the eye's faulty refractive ability; distant objects appear blurred
(synonym) nearsightedness, shortsightedness
(antonym) hyperopia, hypermetropia, hypermetropy, farsightedness, longsightedness
(hypernym) ametropia
(classification) ophthalmology

(n.)
Nearsightedness; shortsightedness; a condition of the eye in which the rays from distant object are brought to a focus before they reach the retina, and hence form an indistinct image; while the rays from very near objects are normally converged so as to produce a distinct image. It is corrected by the use of a concave lens.