Source : Webster's Revised Unabridged Dictionary (1913)

Myopia \My*o"pi*a\, n. [NL. See {Myope}.] (Med.)
   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.

Source : WordNet®

myopia
     n : (ophthalmology) eyesight abnormality resulting from the
         eye's faulty refractive ability; distant objects appear
         blurred [syn: {nearsightedness}, {shortsightedness}]
         [ant: {hyperopia}]