Emmetropia

2 definitions found

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

  Emmetropia \Em`me*tro"pi*a\ ([e^]m"m[-e]*tr[=o]"p[i^]*[.a]), n.
     [NL., fr. Gr. 'e`mmetros in measure, proportioned, suitable
     ('en in + me`tron measure) + 'w`ps, 'wpo`s, eye.] (Med.)
     That refractive condition of the eye in which the rays of
     light are all brought accurately and without undue effort to
     a focus upon the retina; -- opposed to {hypermetropia},


     {myopia}, and {astigmatism}.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  emmetropia
       n : (ophthalmology) the normal refractive condition of the eye
           in which there is clear focus of light on the retina