资料来源 : Webster's Revised Unabridged Dictionary (1913)

Emmetropic \Em`me*trop"ic\, a.
   Pertaining to, or characterized by, emmetropia.

         The normal or emmetropic eye adjusts itself perfectly
         for all distances.                       --J. Le Conte.

资料来源 : WordNet®

emmetropic
     adj : of or relating to the normal condition of the eye in which
           visual images are in clear focus on the retina [ant: {ametropic}]