DICT.TW Dictionary Taiwan

 astigmia
 散光

 astig·mia /-mɪə/ 名詞
 散光

 astigmia
      n 1: (ophthalmology) impaired eyesight resulting usually from
           irregular conformation of the cornea [syn: astigmatism]
      2: (optics) defect in an optical system in which light rays
         from a single point fail to converge in a single focal
         point [syn: astigmatism] [ant: stigmatism]