Astigmia

1 definition found

From WordNet (r) 2.0 [wn]:

  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}]