Myopia

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.
     [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  ametropia \am`e*tro"pi*a\ ([a^]m`[-e]*tr[=o]"p[i^]*[.a]), n.
     [Gr. 'a`metros irregular + 'w`ps, 'wpo`s, eye.] (Med.)
     A visual impairment resulting from faulty refraction of light
     rays in the eye. Subtypes include {myopia} {astigmatism} and
     {hyperopia}. -- {Am`e*trop"ic} ([a^]m`[-e]*tr[o^]p"[i^]k), a.
     AS
     [1913 Webster +PJC]

From WordNet (r) 2.0 [wn]:

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